diff --git a/JNI/cpp/RippleSigner.c b/JNI/cpp/RippleSigner.c
new file mode 100644
index 00000000000..d1a48bc9a53
--- /dev/null
+++ b/JNI/cpp/RippleSigner.c
@@ -0,0 +1,35 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+//
+// This is a GENERATED FILE, changes made here WILL BE LOST.
+//
+
+#include <jni.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <TrustWalletCore/TWRippleSigner.h>
+
+#include "TWJNI.h"
+#include "RippleSigner.h"
+
+jobject JNICALL Java_wallet_core_jni_RippleSigner_sign(JNIEnv *env, jclass thisClass, jobject input) {
+    jclass inputClass = (*env)->GetObjectClass(env, input);
+    jmethodID inputToByteArrayMethodID = (*env)->GetMethodID(env, inputClass, "toByteArray", "()[B");
+    jbyteArray inputByteArray = (*env)->CallObjectMethod(env, input, inputToByteArrayMethodID);
+    TWData *inputData = TWDataCreateWithJByteArray(env, inputByteArray);
+    jbyteArray resultData = TWDataJByteArray(TWRippleSignerSign(inputData), env);
+    jclass resultClass = (*env)->FindClass(env, "wallet/core/jni/proto/Proto$SigningOutput");
+    jmethodID parseFromMethodID = (*env)->GetStaticMethodID(env, resultClass, "parseFrom", "([B)Lwallet/core/jni/proto/Proto$SigningOutput;");
+    jobject result = (*env)->CallStaticObjectMethod(env, resultClass, parseFromMethodID, resultData);
+
+    (*env)->DeleteLocalRef(env, resultClass);
+    (*env)->DeleteLocalRef(env, inputByteArray);
+    (*env)->DeleteLocalRef(env, inputClass);
+
+    return result;
+}
+
diff --git a/JNI/cpp/RippleSigner.h b/JNI/cpp/RippleSigner.h
new file mode 100644
index 00000000000..2690c587043
--- /dev/null
+++ b/JNI/cpp/RippleSigner.h
@@ -0,0 +1,24 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+//
+// This is a GENERATED FILE, changes made here WILL BE LOST.
+//
+
+#ifndef JNI_TW_RIPPLESIGNER_H
+#define JNI_TW_RIPPLESIGNER_H
+
+#include <jni.h>
+#include <TrustWalletCore/TWBase.h>
+
+TW_EXTERN_C_BEGIN
+
+JNIEXPORT
+jobject JNICALL Java_wallet_core_jni_RippleSigner_sign(JNIEnv *env, jclass thisClass, jobject input);
+
+
+TW_EXTERN_C_END
+
+#endif // JNI_TW_RIPPLESIGNER_H
diff --git a/JNI/java/com/wallet/crypto/trustapp/proto/Ripple.java b/JNI/java/com/wallet/crypto/trustapp/proto/Ripple.java
new file mode 100644
index 00000000000..a8d34ace786
--- /dev/null
+++ b/JNI/java/com/wallet/crypto/trustapp/proto/Ripple.java
@@ -0,0 +1,1702 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: Ripple.proto
+
+package com.wallet.crypto.trustapp.proto;
+
+public final class Ripple {
+  private Ripple() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  public interface SigningInputOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:TW.Ripple.Proto.SigningInput)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>int64 amount = 1;</code>
+     */
+    long getAmount();
+
+    /**
+     * <code>int64 fee = 2;</code>
+     */
+    long getFee();
+
+    /**
+     * <code>int32 sequence = 3;</code>
+     */
+    int getSequence();
+
+    /**
+     * <code>int32 last_ledger_sequence = 4;</code>
+     */
+    int getLastLedgerSequence();
+
+    /**
+     * <code>string account = 5;</code>
+     */
+    java.lang.String getAccount();
+    /**
+     * <code>string account = 5;</code>
+     */
+    com.google.protobuf.ByteString
+        getAccountBytes();
+
+    /**
+     * <code>string destination = 6;</code>
+     */
+    java.lang.String getDestination();
+    /**
+     * <code>string destination = 6;</code>
+     */
+    com.google.protobuf.ByteString
+        getDestinationBytes();
+
+    /**
+     * <code>int64 destination_tag = 7;</code>
+     */
+    long getDestinationTag();
+
+    /**
+     * <code>int64 flags = 8;</code>
+     */
+    long getFlags();
+
+    /**
+     * <code>bytes private_key = 9;</code>
+     */
+    com.google.protobuf.ByteString getPrivateKey();
+  }
+  /**
+   * <pre>
+   * Input data necessary to create a signed transaction.
+   * </pre>
+   *
+   * Protobuf type {@code TW.Ripple.Proto.SigningInput}
+   */
+  public  static final class SigningInput extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:TW.Ripple.Proto.SigningInput)
+      SigningInputOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use SigningInput.newBuilder() to construct.
+    private SigningInput(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private SigningInput() {
+      amount_ = 0L;
+      fee_ = 0L;
+      sequence_ = 0;
+      lastLedgerSequence_ = 0;
+      account_ = "";
+      destination_ = "";
+      destinationTag_ = 0L;
+      flags_ = 0L;
+      privateKey_ = com.google.protobuf.ByteString.EMPTY;
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private SigningInput(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 8: {
+
+              amount_ = input.readInt64();
+              break;
+            }
+            case 16: {
+
+              fee_ = input.readInt64();
+              break;
+            }
+            case 24: {
+
+              sequence_ = input.readInt32();
+              break;
+            }
+            case 32: {
+
+              lastLedgerSequence_ = input.readInt32();
+              break;
+            }
+            case 42: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              account_ = s;
+              break;
+            }
+            case 50: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              destination_ = s;
+              break;
+            }
+            case 56: {
+
+              destinationTag_ = input.readInt64();
+              break;
+            }
+            case 64: {
+
+              flags_ = input.readInt64();
+              break;
+            }
+            case 74: {
+
+              privateKey_ = input.readBytes();
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return com.wallet.crypto.trustapp.proto.Ripple.internal_static_TW_Ripple_Proto_SigningInput_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return com.wallet.crypto.trustapp.proto.Ripple.internal_static_TW_Ripple_Proto_SigningInput_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              com.wallet.crypto.trustapp.proto.Ripple.SigningInput.class, com.wallet.crypto.trustapp.proto.Ripple.SigningInput.Builder.class);
+    }
+
+    public static final int AMOUNT_FIELD_NUMBER = 1;
+    private long amount_;
+    /**
+     * <code>int64 amount = 1;</code>
+     */
+    public long getAmount() {
+      return amount_;
+    }
+
+    public static final int FEE_FIELD_NUMBER = 2;
+    private long fee_;
+    /**
+     * <code>int64 fee = 2;</code>
+     */
+    public long getFee() {
+      return fee_;
+    }
+
+    public static final int SEQUENCE_FIELD_NUMBER = 3;
+    private int sequence_;
+    /**
+     * <code>int32 sequence = 3;</code>
+     */
+    public int getSequence() {
+      return sequence_;
+    }
+
+    public static final int LAST_LEDGER_SEQUENCE_FIELD_NUMBER = 4;
+    private int lastLedgerSequence_;
+    /**
+     * <code>int32 last_ledger_sequence = 4;</code>
+     */
+    public int getLastLedgerSequence() {
+      return lastLedgerSequence_;
+    }
+
+    public static final int ACCOUNT_FIELD_NUMBER = 5;
+    private volatile java.lang.Object account_;
+    /**
+     * <code>string account = 5;</code>
+     */
+    public java.lang.String getAccount() {
+      java.lang.Object ref = account_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        account_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string account = 5;</code>
+     */
+    public com.google.protobuf.ByteString
+        getAccountBytes() {
+      java.lang.Object ref = account_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        account_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int DESTINATION_FIELD_NUMBER = 6;
+    private volatile java.lang.Object destination_;
+    /**
+     * <code>string destination = 6;</code>
+     */
+    public java.lang.String getDestination() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        destination_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string destination = 6;</code>
+     */
+    public com.google.protobuf.ByteString
+        getDestinationBytes() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        destination_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int DESTINATION_TAG_FIELD_NUMBER = 7;
+    private long destinationTag_;
+    /**
+     * <code>int64 destination_tag = 7;</code>
+     */
+    public long getDestinationTag() {
+      return destinationTag_;
+    }
+
+    public static final int FLAGS_FIELD_NUMBER = 8;
+    private long flags_;
+    /**
+     * <code>int64 flags = 8;</code>
+     */
+    public long getFlags() {
+      return flags_;
+    }
+
+    public static final int PRIVATE_KEY_FIELD_NUMBER = 9;
+    private com.google.protobuf.ByteString privateKey_;
+    /**
+     * <code>bytes private_key = 9;</code>
+     */
+    public com.google.protobuf.ByteString getPrivateKey() {
+      return privateKey_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
+    public final boolean isInitialized() {
+      byte isInitialized = memoizedIsInitialized;
+      if (isInitialized == 1) return true;
+      if (isInitialized == 0) return false;
+
+      memoizedIsInitialized = 1;
+      return true;
+    }
+
+    @java.lang.Override
+    public void writeTo(com.google.protobuf.CodedOutputStream output)
+                        throws java.io.IOException {
+      if (amount_ != 0L) {
+        output.writeInt64(1, amount_);
+      }
+      if (fee_ != 0L) {
+        output.writeInt64(2, fee_);
+      }
+      if (sequence_ != 0) {
+        output.writeInt32(3, sequence_);
+      }
+      if (lastLedgerSequence_ != 0) {
+        output.writeInt32(4, lastLedgerSequence_);
+      }
+      if (!getAccountBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 5, account_);
+      }
+      if (!getDestinationBytes().isEmpty()) {
+        com.google.protobuf.GeneratedMessageV3.writeString(output, 6, destination_);
+      }
+      if (destinationTag_ != 0L) {
+        output.writeInt64(7, destinationTag_);
+      }
+      if (flags_ != 0L) {
+        output.writeInt64(8, flags_);
+      }
+      if (!privateKey_.isEmpty()) {
+        output.writeBytes(9, privateKey_);
+      }
+      unknownFields.writeTo(output);
+    }
+
+    @java.lang.Override
+    public int getSerializedSize() {
+      int size = memoizedSize;
+      if (size != -1) return size;
+
+      size = 0;
+      if (amount_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(1, amount_);
+      }
+      if (fee_ != 0L) {
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+      }
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+      }
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+          .computeInt32Size(4, lastLedgerSequence_);
+      }
+      if (!getAccountBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(5, account_);
+      }
+      if (!getDestinationBytes().isEmpty()) {
+        size += com.google.protobuf.GeneratedMessageV3.computeStringSize(6, destination_);
+      }
+      if (destinationTag_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(7, destinationTag_);
+      }
+      if (flags_ != 0L) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeInt64Size(8, flags_);
+      }
+      if (!privateKey_.isEmpty()) {
+        size += com.google.protobuf.CodedOutputStream
+          .computeBytesSize(9, privateKey_);
+      }
+      size += unknownFields.getSerializedSize();
+      memoizedSize = size;
+      return size;
+    }
+
+    @java.lang.Override
+    public boolean equals(final java.lang.Object obj) {
+      if (obj == this) {
+       return true;
+      }
+      if (!(obj instanceof com.wallet.crypto.trustapp.proto.Ripple.SigningInput)) {
+        return super.equals(obj);
+      }
+      com.wallet.crypto.trustapp.proto.Ripple.SigningInput other = (com.wallet.crypto.trustapp.proto.Ripple.SigningInput) obj;
+
+      boolean result = true;
+      result = result && (getAmount()
+          == other.getAmount());
+      result = result && (getFee()
+          == other.getFee());
+      result = result && (getSequence()
+          == other.getSequence());
+      result = result && (getLastLedgerSequence()
+          == other.getLastLedgerSequence());
+      result = result && getAccount()
+          .equals(other.getAccount());
+      result = result && getDestination()
+          .equals(other.getDestination());
+      result = result && (getDestinationTag()
+          == other.getDestinationTag());
+      result = result && (getFlags()
+          == other.getFlags());
+      result = result && getPrivateKey()
+          .equals(other.getPrivateKey());
+      result = result && unknownFields.equals(other.unknownFields);
+      return result;
+    }
+
+    @java.lang.Override
+    public int hashCode() {
+      if (memoizedHashCode != 0) {
+        return memoizedHashCode;
+      }
+      int hash = 41;
+      hash = (19 * hash) + getDescriptor().hashCode();
+      hash = (37 * hash) + AMOUNT_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
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+      hash = (37 * hash) + FEE_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
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+      hash = (37 * hash) + SEQUENCE_FIELD_NUMBER;
+      hash = (53 * hash) + getSequence();
+      hash = (37 * hash) + LAST_LEDGER_SEQUENCE_FIELD_NUMBER;
+      hash = (53 * hash) + getLastLedgerSequence();
+      hash = (37 * hash) + ACCOUNT_FIELD_NUMBER;
+      hash = (53 * hash) + getAccount().hashCode();
+      hash = (37 * hash) + DESTINATION_FIELD_NUMBER;
+      hash = (53 * hash) + getDestination().hashCode();
+      hash = (37 * hash) + DESTINATION_TAG_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
+          getDestinationTag());
+      hash = (37 * hash) + FLAGS_FIELD_NUMBER;
+      hash = (53 * hash) + com.google.protobuf.Internal.hashLong(
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+      hash = (53 * hash) + getPrivateKey().hashCode();
+      hash = (29 * hash) + unknownFields.hashCode();
+      memoizedHashCode = hash;
+      return hash;
+    }
+
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseFrom(
+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseFrom(
+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseFrom(
+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseFrom(byte[] data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseDelimitedFrom(java.io.InputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseDelimitedFrom(
+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input, extensionRegistry);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseFrom(
+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.wallet.crypto.trustapp.proto.Ripple.SigningInput prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * <pre>
+     * Input data necessary to create a signed transaction.
+     * </pre>
+     *
+     * Protobuf type {@code TW.Ripple.Proto.SigningInput}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:TW.Ripple.Proto.SigningInput)
+        com.wallet.crypto.trustapp.proto.Ripple.SigningInputOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.wallet.crypto.trustapp.proto.Ripple.internal_static_TW_Ripple_Proto_SigningInput_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
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+            .ensureFieldAccessorsInitialized(
+                com.wallet.crypto.trustapp.proto.Ripple.SigningInput.class, com.wallet.crypto.trustapp.proto.Ripple.SigningInput.Builder.class);
+      }
+
+      // Construct using com.wallet.crypto.trustapp.proto.Ripple.SigningInput.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
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+                .alwaysUseFieldBuilders) {
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+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        amount_ = 0L;
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+        fee_ = 0L;
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+        sequence_ = 0;
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+        account_ = "";
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+        destinationTag_ = 0L;
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+        flags_ = 0L;
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+        privateKey_ = com.google.protobuf.ByteString.EMPTY;
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+        return this;
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+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.wallet.crypto.trustapp.proto.Ripple.internal_static_TW_Ripple_Proto_SigningInput_descriptor;
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+
+      @java.lang.Override
+      public com.wallet.crypto.trustapp.proto.Ripple.SigningInput getDefaultInstanceForType() {
+        return com.wallet.crypto.trustapp.proto.Ripple.SigningInput.getDefaultInstance();
+      }
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+      @java.lang.Override
+      public com.wallet.crypto.trustapp.proto.Ripple.SigningInput build() {
+        com.wallet.crypto.trustapp.proto.Ripple.SigningInput result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public com.wallet.crypto.trustapp.proto.Ripple.SigningInput buildPartial() {
+        com.wallet.crypto.trustapp.proto.Ripple.SigningInput result = new com.wallet.crypto.trustapp.proto.Ripple.SigningInput(this);
+        result.amount_ = amount_;
+        result.fee_ = fee_;
+        result.sequence_ = sequence_;
+        result.lastLedgerSequence_ = lastLedgerSequence_;
+        result.account_ = account_;
+        result.destination_ = destination_;
+        result.destinationTag_ = destinationTag_;
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+        result.privateKey_ = privateKey_;
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+          com.google.protobuf.Descriptors.FieldDescriptor field,
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+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.wallet.crypto.trustapp.proto.Ripple.SigningInput) {
+          return mergeFrom((com.wallet.crypto.trustapp.proto.Ripple.SigningInput)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.wallet.crypto.trustapp.proto.Ripple.SigningInput other) {
+        if (other == com.wallet.crypto.trustapp.proto.Ripple.SigningInput.getDefaultInstance()) return this;
+        if (other.getAmount() != 0L) {
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+        if (other.getFee() != 0L) {
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+        onChanged();
+        return this;
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+      @java.lang.Override
+      public final boolean isInitialized() {
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+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.wallet.crypto.trustapp.proto.Ripple.SigningInput parsedMessage = null;
+        try {
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+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
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+            mergeFrom(parsedMessage);
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+        return this;
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+      private long amount_ ;
+      /**
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+      public long getAmount() {
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+        amount_ = value;
+        onChanged();
+        return this;
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+      /**
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+        
+        amount_ = 0L;
+        onChanged();
+        return this;
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+      private long fee_ ;
+      /**
+       * <code>int64 fee = 2;</code>
+       */
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+        return fee_;
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+      /**
+       * <code>int64 fee = 2;</code>
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+      public Builder setFee(long value) {
+        
+        fee_ = value;
+        onChanged();
+        return this;
+      }
+      /**
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+       */
+      public Builder clearFee() {
+        
+        fee_ = 0L;
+        onChanged();
+        return this;
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+
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+      /**
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+        sequence_ = value;
+        onChanged();
+        return this;
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+        sequence_ = 0;
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+        lastLedgerSequence_ = value;
+        onChanged();
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+        lastLedgerSequence_ = 0;
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+        return this;
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+      /**
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+        
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+        onChanged();
+        return this;
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+      /**
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+        onChanged();
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+      /**
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+        onChanged();
+        return this;
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+      private com.google.protobuf.ByteString privateKey_ = com.google.protobuf.ByteString.EMPTY;
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+        if (value == null) {
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+        privateKey_ = value;
+        onChanged();
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+        privateKey_ = getDefaultInstance().getPrivateKey();
+        onChanged();
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+      @java.lang.Override
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+      // @@protoc_insertion_point(builder_scope:TW.Ripple.Proto.SigningInput)
+    }
+
+    // @@protoc_insertion_point(class_scope:TW.Ripple.Proto.SigningInput)
+    private static final com.wallet.crypto.trustapp.proto.Ripple.SigningInput DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.wallet.crypto.trustapp.proto.Ripple.SigningInput();
+    }
+
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningInput getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
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+        PARSER = new com.google.protobuf.AbstractParser<SigningInput>() {
+      @java.lang.Override
+      public SigningInput parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new SigningInput(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<SigningInput> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<SigningInput> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.wallet.crypto.trustapp.proto.Ripple.SigningInput getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  public interface SigningOutputOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:TW.Ripple.Proto.SigningOutput)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
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+    com.google.protobuf.ByteString getEncoded();
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+  /**
+   * <pre>
+   * Transaction signing output.
+   * </pre>
+   *
+   * Protobuf type {@code TW.Ripple.Proto.SigningOutput}
+   */
+  public  static final class SigningOutput extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:TW.Ripple.Proto.SigningOutput)
+      SigningOutputOrBuilder {
+  private static final long serialVersionUID = 0L;
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+      if (!(obj instanceof com.wallet.crypto.trustapp.proto.Ripple.SigningOutput)) {
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+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
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+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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+      return PARSER.parseFrom(data, extensionRegistry);
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+      return PARSER.parseFrom(data);
+    }
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningOutput parseFrom(
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
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+        throws java.io.IOException {
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+      return com.google.protobuf.GeneratedMessageV3
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+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
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+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningOutput parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
+    }
+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(com.wallet.crypto.trustapp.proto.Ripple.SigningOutput prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * <pre>
+     * Transaction signing output.
+     * </pre>
+     *
+     * Protobuf type {@code TW.Ripple.Proto.SigningOutput}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:TW.Ripple.Proto.SigningOutput)
+        com.wallet.crypto.trustapp.proto.Ripple.SigningOutputOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return com.wallet.crypto.trustapp.proto.Ripple.internal_static_TW_Ripple_Proto_SigningOutput_descriptor;
+      }
+
+      @java.lang.Override
+      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+          internalGetFieldAccessorTable() {
+        return com.wallet.crypto.trustapp.proto.Ripple.internal_static_TW_Ripple_Proto_SigningOutput_fieldAccessorTable
+            .ensureFieldAccessorsInitialized(
+                com.wallet.crypto.trustapp.proto.Ripple.SigningOutput.class, com.wallet.crypto.trustapp.proto.Ripple.SigningOutput.Builder.class);
+      }
+
+      // Construct using com.wallet.crypto.trustapp.proto.Ripple.SigningOutput.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+        super(parent);
+        maybeForceBuilderInitialization();
+      }
+      private void maybeForceBuilderInitialization() {
+        if (com.google.protobuf.GeneratedMessageV3
+                .alwaysUseFieldBuilders) {
+        }
+      }
+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        encoded_ = com.google.protobuf.ByteString.EMPTY;
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return com.wallet.crypto.trustapp.proto.Ripple.internal_static_TW_Ripple_Proto_SigningOutput_descriptor;
+      }
+
+      @java.lang.Override
+      public com.wallet.crypto.trustapp.proto.Ripple.SigningOutput getDefaultInstanceForType() {
+        return com.wallet.crypto.trustapp.proto.Ripple.SigningOutput.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public com.wallet.crypto.trustapp.proto.Ripple.SigningOutput build() {
+        com.wallet.crypto.trustapp.proto.Ripple.SigningOutput result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public com.wallet.crypto.trustapp.proto.Ripple.SigningOutput buildPartial() {
+        com.wallet.crypto.trustapp.proto.Ripple.SigningOutput result = new com.wallet.crypto.trustapp.proto.Ripple.SigningOutput(this);
+        result.encoded_ = encoded_;
+        onBuilt();
+        return result;
+      }
+
+      @java.lang.Override
+      public Builder clone() {
+        return (Builder) super.clone();
+      }
+      @java.lang.Override
+      public Builder setField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.setField(field, value);
+      }
+      @java.lang.Override
+      public Builder clearField(
+          com.google.protobuf.Descriptors.FieldDescriptor field) {
+        return (Builder) super.clearField(field);
+      }
+      @java.lang.Override
+      public Builder clearOneof(
+          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
+        return (Builder) super.clearOneof(oneof);
+      }
+      @java.lang.Override
+      public Builder setRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          int index, java.lang.Object value) {
+        return (Builder) super.setRepeatedField(field, index, value);
+      }
+      @java.lang.Override
+      public Builder addRepeatedField(
+          com.google.protobuf.Descriptors.FieldDescriptor field,
+          java.lang.Object value) {
+        return (Builder) super.addRepeatedField(field, value);
+      }
+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof com.wallet.crypto.trustapp.proto.Ripple.SigningOutput) {
+          return mergeFrom((com.wallet.crypto.trustapp.proto.Ripple.SigningOutput)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(com.wallet.crypto.trustapp.proto.Ripple.SigningOutput other) {
+        if (other == com.wallet.crypto.trustapp.proto.Ripple.SigningOutput.getDefaultInstance()) return this;
+        if (other.getEncoded() != com.google.protobuf.ByteString.EMPTY) {
+          setEncoded(other.getEncoded());
+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
+        return true;
+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        com.wallet.crypto.trustapp.proto.Ripple.SigningOutput parsedMessage = null;
+        try {
+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (com.wallet.crypto.trustapp.proto.Ripple.SigningOutput) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private com.google.protobuf.ByteString encoded_ = com.google.protobuf.ByteString.EMPTY;
+      /**
+       * <code>bytes encoded = 1;</code>
+       */
+      public com.google.protobuf.ByteString getEncoded() {
+        return encoded_;
+      }
+      /**
+       * <code>bytes encoded = 1;</code>
+       */
+      public Builder setEncoded(com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
+  }
+  
+        encoded_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>bytes encoded = 1;</code>
+       */
+      public Builder clearEncoded() {
+        
+        encoded_ = getDefaultInstance().getEncoded();
+        onChanged();
+        return this;
+      }
+      @java.lang.Override
+      public final Builder setUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.setUnknownFieldsProto3(unknownFields);
+      }
+
+      @java.lang.Override
+      public final Builder mergeUnknownFields(
+          final com.google.protobuf.UnknownFieldSet unknownFields) {
+        return super.mergeUnknownFields(unknownFields);
+      }
+
+
+      // @@protoc_insertion_point(builder_scope:TW.Ripple.Proto.SigningOutput)
+    }
+
+    // @@protoc_insertion_point(class_scope:TW.Ripple.Proto.SigningOutput)
+    private static final com.wallet.crypto.trustapp.proto.Ripple.SigningOutput DEFAULT_INSTANCE;
+    static {
+      DEFAULT_INSTANCE = new com.wallet.crypto.trustapp.proto.Ripple.SigningOutput();
+    }
+
+    public static com.wallet.crypto.trustapp.proto.Ripple.SigningOutput getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
+    private static final com.google.protobuf.Parser<SigningOutput>
+        PARSER = new com.google.protobuf.AbstractParser<SigningOutput>() {
+      @java.lang.Override
+      public SigningOutput parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new SigningOutput(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<SigningOutput> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<SigningOutput> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.wallet.crypto.trustapp.proto.Ripple.SigningOutput getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_TW_Ripple_Proto_SigningInput_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_TW_Ripple_Proto_SigningInput_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_TW_Ripple_Proto_SigningOutput_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_TW_Ripple_Proto_SigningOutput_fieldAccessorTable;
+
+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
+    return descriptor;
+  }
+  private static  com.google.protobuf.Descriptors.FileDescriptor
+      descriptor;
+  static {
+    java.lang.String[] descriptorData = {
+      "\n\014Ripple.proto\022\017TW.Ripple.Proto\"\276\001\n\014Sign" +
+      "ingInput\022\016\n\006amount\030\001 \001(\003\022\013\n\003fee\030\002 \001(\003\022\020\n" +
+      "\010sequence\030\003 \001(\005\022\034\n\024last_ledger_sequence\030" +
+      "\004 \001(\005\022\017\n\007account\030\005 \001(\t\022\023\n\013destination\030\006 " +
+      "\001(\t\022\027\n\017destination_tag\030\007 \001(\003\022\r\n\005flags\030\010 " +
+      "\001(\003\022\023\n\013private_key\030\t \001(\014\" \n\rSigningOutpu" +
+      "t\022\017\n\007encoded\030\001 \001(\014B\"\n com.wallet.crypto." +
+      "trustapp.protob\006proto3"
+    };
+    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
+        new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
+          public com.google.protobuf.ExtensionRegistry assignDescriptors(
+              com.google.protobuf.Descriptors.FileDescriptor root) {
+            descriptor = root;
+            return null;
+          }
+        };
+    com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        }, assigner);
+    internal_static_TW_Ripple_Proto_SigningInput_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_TW_Ripple_Proto_SigningInput_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_TW_Ripple_Proto_SigningInput_descriptor,
+        new java.lang.String[] { "Amount", "Fee", "Sequence", "LastLedgerSequence", "Account", "Destination", "DestinationTag", "Flags", "PrivateKey", });
+    internal_static_TW_Ripple_Proto_SigningOutput_descriptor =
+      getDescriptor().getMessageTypes().get(1);
+    internal_static_TW_Ripple_Proto_SigningOutput_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_TW_Ripple_Proto_SigningOutput_descriptor,
+        new java.lang.String[] { "Encoded", });
+  }
+
+  // @@protoc_insertion_point(outer_class_scope)
+}
diff --git a/JNI/java/wallet/core/jni/CoinType.java b/JNI/java/wallet/core/jni/CoinType.java
index 98fdbe01715..b1bafe948df 100644
--- a/JNI/java/wallet/core/jni/CoinType.java
+++ b/JNI/java/wallet/core/jni/CoinType.java
@@ -23,7 +23,6 @@ public enum CoinType {
     ICON (74),
     LITECOIN (2),
     POA (178),
-    TEST (1),
     THUNDERTOKEN (1001),
     TOMOCHAIN (889),
     TRON (195),
diff --git a/JNI/java/wallet/core/jni/RippleSigner.java b/JNI/java/wallet/core/jni/RippleSigner.java
new file mode 100644
index 00000000000..cc039979f11
--- /dev/null
+++ b/JNI/java/wallet/core/jni/RippleSigner.java
@@ -0,0 +1,32 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+//
+// This is a GENERATED FILE, changes made here WILL BE LOST.
+//
+
+package wallet.core.jni;
+
+import java.security.InvalidParameterException;
+import java.util.HashSet;
+
+public class RippleSigner {
+    private long nativeHandle;
+
+    private RippleSigner() {
+        nativeHandle = 0;
+    }
+
+    static RippleSigner createFromNative(long nativeHandle) {
+        RippleSigner instance = new RippleSigner();
+        instance.nativeHandle = nativeHandle;
+        return instance;
+    }
+
+
+    public static native wallet.core.jni.proto.Ripple.SigningOutput sign(wallet.core.jni.proto.Ripple.SigningInput input);
+
+}
+
diff --git a/JNI/java/wallet/core/jni/proto/Ripple.java b/JNI/java/wallet/core/jni/proto/Ripple.java
new file mode 100644
index 00000000000..3c0011fdb3d
--- /dev/null
+++ b/JNI/java/wallet/core/jni/proto/Ripple.java
@@ -0,0 +1,1702 @@
+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: Ripple.proto
+
+package wallet.core.jni.proto;
+
+public final class Ripple {
+  private Ripple() {}
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistryLite registry) {
+  }
+
+  public static void registerAllExtensions(
+      com.google.protobuf.ExtensionRegistry registry) {
+    registerAllExtensions(
+        (com.google.protobuf.ExtensionRegistryLite) registry);
+  }
+  public interface SigningInputOrBuilder extends
+      // @@protoc_insertion_point(interface_extends:TW.Ripple.Proto.SigningInput)
+      com.google.protobuf.MessageOrBuilder {
+
+    /**
+     * <code>int64 amount = 1;</code>
+     */
+    long getAmount();
+
+    /**
+     * <code>int64 fee = 2;</code>
+     */
+    long getFee();
+
+    /**
+     * <code>int32 sequence = 3;</code>
+     */
+    int getSequence();
+
+    /**
+     * <code>int32 last_ledger_sequence = 4;</code>
+     */
+    int getLastLedgerSequence();
+
+    /**
+     * <code>string account = 5;</code>
+     */
+    java.lang.String getAccount();
+    /**
+     * <code>string account = 5;</code>
+     */
+    com.google.protobuf.ByteString
+        getAccountBytes();
+
+    /**
+     * <code>string destination = 6;</code>
+     */
+    java.lang.String getDestination();
+    /**
+     * <code>string destination = 6;</code>
+     */
+    com.google.protobuf.ByteString
+        getDestinationBytes();
+
+    /**
+     * <code>int64 destination_tag = 7;</code>
+     */
+    long getDestinationTag();
+
+    /**
+     * <code>int64 flags = 8;</code>
+     */
+    long getFlags();
+
+    /**
+     * <code>bytes private_key = 9;</code>
+     */
+    com.google.protobuf.ByteString getPrivateKey();
+  }
+  /**
+   * <pre>
+   * Input data necessary to create a signed transaction.
+   * </pre>
+   *
+   * Protobuf type {@code TW.Ripple.Proto.SigningInput}
+   */
+  public  static final class SigningInput extends
+      com.google.protobuf.GeneratedMessageV3 implements
+      // @@protoc_insertion_point(message_implements:TW.Ripple.Proto.SigningInput)
+      SigningInputOrBuilder {
+  private static final long serialVersionUID = 0L;
+    // Use SigningInput.newBuilder() to construct.
+    private SigningInput(com.google.protobuf.GeneratedMessageV3.Builder<?> builder) {
+      super(builder);
+    }
+    private SigningInput() {
+      amount_ = 0L;
+      fee_ = 0L;
+      sequence_ = 0;
+      lastLedgerSequence_ = 0;
+      account_ = "";
+      destination_ = "";
+      destinationTag_ = 0L;
+      flags_ = 0L;
+      privateKey_ = com.google.protobuf.ByteString.EMPTY;
+    }
+
+    @java.lang.Override
+    public final com.google.protobuf.UnknownFieldSet
+    getUnknownFields() {
+      return this.unknownFields;
+    }
+    private SigningInput(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      this();
+      if (extensionRegistry == null) {
+        throw new java.lang.NullPointerException();
+      }
+      int mutable_bitField0_ = 0;
+      com.google.protobuf.UnknownFieldSet.Builder unknownFields =
+          com.google.protobuf.UnknownFieldSet.newBuilder();
+      try {
+        boolean done = false;
+        while (!done) {
+          int tag = input.readTag();
+          switch (tag) {
+            case 0:
+              done = true;
+              break;
+            case 8: {
+
+              amount_ = input.readInt64();
+              break;
+            }
+            case 16: {
+
+              fee_ = input.readInt64();
+              break;
+            }
+            case 24: {
+
+              sequence_ = input.readInt32();
+              break;
+            }
+            case 32: {
+
+              lastLedgerSequence_ = input.readInt32();
+              break;
+            }
+            case 42: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              account_ = s;
+              break;
+            }
+            case 50: {
+              java.lang.String s = input.readStringRequireUtf8();
+
+              destination_ = s;
+              break;
+            }
+            case 56: {
+
+              destinationTag_ = input.readInt64();
+              break;
+            }
+            case 64: {
+
+              flags_ = input.readInt64();
+              break;
+            }
+            case 74: {
+
+              privateKey_ = input.readBytes();
+              break;
+            }
+            default: {
+              if (!parseUnknownFieldProto3(
+                  input, unknownFields, extensionRegistry, tag)) {
+                done = true;
+              }
+              break;
+            }
+          }
+        }
+      } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+        throw e.setUnfinishedMessage(this);
+      } catch (java.io.IOException e) {
+        throw new com.google.protobuf.InvalidProtocolBufferException(
+            e).setUnfinishedMessage(this);
+      } finally {
+        this.unknownFields = unknownFields.build();
+        makeExtensionsImmutable();
+      }
+    }
+    public static final com.google.protobuf.Descriptors.Descriptor
+        getDescriptor() {
+      return wallet.core.jni.proto.Ripple.internal_static_TW_Ripple_Proto_SigningInput_descriptor;
+    }
+
+    @java.lang.Override
+    protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+        internalGetFieldAccessorTable() {
+      return wallet.core.jni.proto.Ripple.internal_static_TW_Ripple_Proto_SigningInput_fieldAccessorTable
+          .ensureFieldAccessorsInitialized(
+              wallet.core.jni.proto.Ripple.SigningInput.class, wallet.core.jni.proto.Ripple.SigningInput.Builder.class);
+    }
+
+    public static final int AMOUNT_FIELD_NUMBER = 1;
+    private long amount_;
+    /**
+     * <code>int64 amount = 1;</code>
+     */
+    public long getAmount() {
+      return amount_;
+    }
+
+    public static final int FEE_FIELD_NUMBER = 2;
+    private long fee_;
+    /**
+     * <code>int64 fee = 2;</code>
+     */
+    public long getFee() {
+      return fee_;
+    }
+
+    public static final int SEQUENCE_FIELD_NUMBER = 3;
+    private int sequence_;
+    /**
+     * <code>int32 sequence = 3;</code>
+     */
+    public int getSequence() {
+      return sequence_;
+    }
+
+    public static final int LAST_LEDGER_SEQUENCE_FIELD_NUMBER = 4;
+    private int lastLedgerSequence_;
+    /**
+     * <code>int32 last_ledger_sequence = 4;</code>
+     */
+    public int getLastLedgerSequence() {
+      return lastLedgerSequence_;
+    }
+
+    public static final int ACCOUNT_FIELD_NUMBER = 5;
+    private volatile java.lang.Object account_;
+    /**
+     * <code>string account = 5;</code>
+     */
+    public java.lang.String getAccount() {
+      java.lang.Object ref = account_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        account_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string account = 5;</code>
+     */
+    public com.google.protobuf.ByteString
+        getAccountBytes() {
+      java.lang.Object ref = account_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        account_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int DESTINATION_FIELD_NUMBER = 6;
+    private volatile java.lang.Object destination_;
+    /**
+     * <code>string destination = 6;</code>
+     */
+    public java.lang.String getDestination() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        return (java.lang.String) ref;
+      } else {
+        com.google.protobuf.ByteString bs = 
+            (com.google.protobuf.ByteString) ref;
+        java.lang.String s = bs.toStringUtf8();
+        destination_ = s;
+        return s;
+      }
+    }
+    /**
+     * <code>string destination = 6;</code>
+     */
+    public com.google.protobuf.ByteString
+        getDestinationBytes() {
+      java.lang.Object ref = destination_;
+      if (ref instanceof java.lang.String) {
+        com.google.protobuf.ByteString b = 
+            com.google.protobuf.ByteString.copyFromUtf8(
+                (java.lang.String) ref);
+        destination_ = b;
+        return b;
+      } else {
+        return (com.google.protobuf.ByteString) ref;
+      }
+    }
+
+    public static final int DESTINATION_TAG_FIELD_NUMBER = 7;
+    private long destinationTag_;
+    /**
+     * <code>int64 destination_tag = 7;</code>
+     */
+    public long getDestinationTag() {
+      return destinationTag_;
+    }
+
+    public static final int FLAGS_FIELD_NUMBER = 8;
+    private long flags_;
+    /**
+     * <code>int64 flags = 8;</code>
+     */
+    public long getFlags() {
+      return flags_;
+    }
+
+    public static final int PRIVATE_KEY_FIELD_NUMBER = 9;
+    private com.google.protobuf.ByteString privateKey_;
+    /**
+     * <code>bytes private_key = 9;</code>
+     */
+    public com.google.protobuf.ByteString getPrivateKey() {
+      return privateKey_;
+    }
+
+    private byte memoizedIsInitialized = -1;
+    @java.lang.Override
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+        java.nio.ByteBuffer data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
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+        java.nio.ByteBuffer data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
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+        com.google.protobuf.ByteString data)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static wallet.core.jni.proto.Ripple.SigningInput parseFrom(
+        com.google.protobuf.ByteString data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
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+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data);
+    }
+    public static wallet.core.jni.proto.Ripple.SigningInput parseFrom(
+        byte[] data,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws com.google.protobuf.InvalidProtocolBufferException {
+      return PARSER.parseFrom(data, extensionRegistry);
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+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
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+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
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+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseDelimitedWithIOException(PARSER, input);
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+        java.io.InputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
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+        com.google.protobuf.CodedInputStream input)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input);
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+    public static wallet.core.jni.proto.Ripple.SigningInput parseFrom(
+        com.google.protobuf.CodedInputStream input,
+        com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+        throws java.io.IOException {
+      return com.google.protobuf.GeneratedMessageV3
+          .parseWithIOException(PARSER, input, extensionRegistry);
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+
+    @java.lang.Override
+    public Builder newBuilderForType() { return newBuilder(); }
+    public static Builder newBuilder() {
+      return DEFAULT_INSTANCE.toBuilder();
+    }
+    public static Builder newBuilder(wallet.core.jni.proto.Ripple.SigningInput prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
+    }
+
+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
+      return builder;
+    }
+    /**
+     * <pre>
+     * Input data necessary to create a signed transaction.
+     * </pre>
+     *
+     * Protobuf type {@code TW.Ripple.Proto.SigningInput}
+     */
+    public static final class Builder extends
+        com.google.protobuf.GeneratedMessageV3.Builder<Builder> implements
+        // @@protoc_insertion_point(builder_implements:TW.Ripple.Proto.SigningInput)
+        wallet.core.jni.proto.Ripple.SigningInputOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
+        return wallet.core.jni.proto.Ripple.internal_static_TW_Ripple_Proto_SigningInput_descriptor;
+      }
+
+      @java.lang.Override
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+                wallet.core.jni.proto.Ripple.SigningInput.class, wallet.core.jni.proto.Ripple.SigningInput.Builder.class);
+      }
+
+      // Construct using wallet.core.jni.proto.Ripple.SigningInput.newBuilder()
+      private Builder() {
+        maybeForceBuilderInitialization();
+      }
+
+      private Builder(
+          com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
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+        maybeForceBuilderInitialization();
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+                .alwaysUseFieldBuilders) {
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+      @java.lang.Override
+      public Builder clear() {
+        super.clear();
+        amount_ = 0L;
+
+        fee_ = 0L;
+
+        sequence_ = 0;
+
+        lastLedgerSequence_ = 0;
+
+        account_ = "";
+
+        destination_ = "";
+
+        destinationTag_ = 0L;
+
+        flags_ = 0L;
+
+        privateKey_ = com.google.protobuf.ByteString.EMPTY;
+
+        return this;
+      }
+
+      @java.lang.Override
+      public com.google.protobuf.Descriptors.Descriptor
+          getDescriptorForType() {
+        return wallet.core.jni.proto.Ripple.internal_static_TW_Ripple_Proto_SigningInput_descriptor;
+      }
+
+      @java.lang.Override
+      public wallet.core.jni.proto.Ripple.SigningInput getDefaultInstanceForType() {
+        return wallet.core.jni.proto.Ripple.SigningInput.getDefaultInstance();
+      }
+
+      @java.lang.Override
+      public wallet.core.jni.proto.Ripple.SigningInput build() {
+        wallet.core.jni.proto.Ripple.SigningInput result = buildPartial();
+        if (!result.isInitialized()) {
+          throw newUninitializedMessageException(result);
+        }
+        return result;
+      }
+
+      @java.lang.Override
+      public wallet.core.jni.proto.Ripple.SigningInput buildPartial() {
+        wallet.core.jni.proto.Ripple.SigningInput result = new wallet.core.jni.proto.Ripple.SigningInput(this);
+        result.amount_ = amount_;
+        result.fee_ = fee_;
+        result.sequence_ = sequence_;
+        result.lastLedgerSequence_ = lastLedgerSequence_;
+        result.account_ = account_;
+        result.destination_ = destination_;
+        result.destinationTag_ = destinationTag_;
+        result.flags_ = flags_;
+        result.privateKey_ = privateKey_;
+        onBuilt();
+        return result;
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+          java.lang.Object value) {
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+      @java.lang.Override
+      public Builder mergeFrom(com.google.protobuf.Message other) {
+        if (other instanceof wallet.core.jni.proto.Ripple.SigningInput) {
+          return mergeFrom((wallet.core.jni.proto.Ripple.SigningInput)other);
+        } else {
+          super.mergeFrom(other);
+          return this;
+        }
+      }
+
+      public Builder mergeFrom(wallet.core.jni.proto.Ripple.SigningInput other) {
+        if (other == wallet.core.jni.proto.Ripple.SigningInput.getDefaultInstance()) return this;
+        if (other.getAmount() != 0L) {
+          setAmount(other.getAmount());
+        }
+        if (other.getFee() != 0L) {
+          setFee(other.getFee());
+        }
+        if (other.getSequence() != 0) {
+          setSequence(other.getSequence());
+        }
+        if (other.getLastLedgerSequence() != 0) {
+          setLastLedgerSequence(other.getLastLedgerSequence());
+        }
+        if (!other.getAccount().isEmpty()) {
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+          onChanged();
+        }
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+        }
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+        if (other.getFlags() != 0L) {
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+        }
+        if (other.getPrivateKey() != com.google.protobuf.ByteString.EMPTY) {
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+        }
+        this.mergeUnknownFields(other.unknownFields);
+        onChanged();
+        return this;
+      }
+
+      @java.lang.Override
+      public final boolean isInitialized() {
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+      }
+
+      @java.lang.Override
+      public Builder mergeFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        wallet.core.jni.proto.Ripple.SigningInput parsedMessage = null;
+        try {
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+        } catch (com.google.protobuf.InvalidProtocolBufferException e) {
+          parsedMessage = (wallet.core.jni.proto.Ripple.SigningInput) e.getUnfinishedMessage();
+          throw e.unwrapIOException();
+        } finally {
+          if (parsedMessage != null) {
+            mergeFrom(parsedMessage);
+          }
+        }
+        return this;
+      }
+
+      private long amount_ ;
+      /**
+       * <code>int64 amount = 1;</code>
+       */
+      public long getAmount() {
+        return amount_;
+      }
+      /**
+       * <code>int64 amount = 1;</code>
+       */
+      public Builder setAmount(long value) {
+        
+        amount_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int64 amount = 1;</code>
+       */
+      public Builder clearAmount() {
+        
+        amount_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      private long fee_ ;
+      /**
+       * <code>int64 fee = 2;</code>
+       */
+      public long getFee() {
+        return fee_;
+      }
+      /**
+       * <code>int64 fee = 2;</code>
+       */
+      public Builder setFee(long value) {
+        
+        fee_ = value;
+        onChanged();
+        return this;
+      }
+      /**
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+       */
+      public Builder clearFee() {
+        
+        fee_ = 0L;
+        onChanged();
+        return this;
+      }
+
+      private int sequence_ ;
+      /**
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+        sequence_ = value;
+        onChanged();
+        return this;
+      }
+      /**
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+       */
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+        
+        sequence_ = 0;
+        onChanged();
+        return this;
+      }
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+      /**
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+      /**
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+        
+        lastLedgerSequence_ = value;
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>int32 last_ledger_sequence = 4;</code>
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+        
+        lastLedgerSequence_ = 0;
+        onChanged();
+        return this;
+      }
+
+      private java.lang.Object account_ = "";
+      /**
+       * <code>string account = 5;</code>
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+        java.lang.Object ref = account_;
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+          java.lang.String s = bs.toStringUtf8();
+          account_ = s;
+          return s;
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+        }
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+        account_ = value;
+        onChanged();
+        return this;
+      }
+      /**
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+       */
+      public Builder clearAccount() {
+        
+        account_ = getDefaultInstance().getAccount();
+        onChanged();
+        return this;
+      }
+      /**
+       * <code>string account = 5;</code>
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+          com.google.protobuf.ByteString value) {
+        if (value == null) {
+    throw new NullPointerException();
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+  checkByteStringIsUtf8(value);
+        
+        account_ = value;
+        onChanged();
+        return this;
+      }
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+      /**
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+        destination_ = value;
+        onChanged();
+        return this;
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+        flags_ = value;
+        onChanged();
+        return this;
+      }
+      /**
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+        
+        flags_ = 0L;
+        onChanged();
+        return this;
+      }
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+      private com.google.protobuf.ByteString privateKey_ = com.google.protobuf.ByteString.EMPTY;
+      /**
+       * <code>bytes private_key = 9;</code>
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+          .parseWithIOException(PARSER, input, extensionRegistry);
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+    @java.lang.Override
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+    public static Builder newBuilder(wallet.core.jni.proto.Ripple.SigningOutput prototype) {
+      return DEFAULT_INSTANCE.toBuilder().mergeFrom(prototype);
+    }
+    @java.lang.Override
+    public Builder toBuilder() {
+      return this == DEFAULT_INSTANCE
+          ? new Builder() : new Builder().mergeFrom(this);
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+    @java.lang.Override
+    protected Builder newBuilderForType(
+        com.google.protobuf.GeneratedMessageV3.BuilderParent parent) {
+      Builder builder = new Builder(parent);
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+    /**
+     * <pre>
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+     * </pre>
+     *
+     * Protobuf type {@code TW.Ripple.Proto.SigningOutput}
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+        // @@protoc_insertion_point(builder_implements:TW.Ripple.Proto.SigningOutput)
+        wallet.core.jni.proto.Ripple.SigningOutputOrBuilder {
+      public static final com.google.protobuf.Descriptors.Descriptor
+          getDescriptor() {
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+      @java.lang.Override
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+      public Builder mergeFrom(wallet.core.jni.proto.Ripple.SigningOutput other) {
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+        onChanged();
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+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws java.io.IOException {
+        wallet.core.jni.proto.Ripple.SigningOutput parsedMessage = null;
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+          parsedMessage = PARSER.parsePartialFrom(input, extensionRegistry);
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+          parsedMessage = (wallet.core.jni.proto.Ripple.SigningOutput) e.getUnfinishedMessage();
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+      /**
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+        if (value == null) {
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+  
+        encoded_ = value;
+        onChanged();
+        return this;
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+      /**
+       * <code>bytes encoded = 1;</code>
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+      public Builder clearEncoded() {
+        
+        encoded_ = getDefaultInstance().getEncoded();
+        onChanged();
+        return this;
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+      @java.lang.Override
+      public final Builder setUnknownFields(
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+      // @@protoc_insertion_point(builder_scope:TW.Ripple.Proto.SigningOutput)
+    }
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+    // @@protoc_insertion_point(class_scope:TW.Ripple.Proto.SigningOutput)
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+    }
+
+    public static wallet.core.jni.proto.Ripple.SigningOutput getDefaultInstance() {
+      return DEFAULT_INSTANCE;
+    }
+
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+        PARSER = new com.google.protobuf.AbstractParser<SigningOutput>() {
+      @java.lang.Override
+      public SigningOutput parsePartialFrom(
+          com.google.protobuf.CodedInputStream input,
+          com.google.protobuf.ExtensionRegistryLite extensionRegistry)
+          throws com.google.protobuf.InvalidProtocolBufferException {
+        return new SigningOutput(input, extensionRegistry);
+      }
+    };
+
+    public static com.google.protobuf.Parser<SigningOutput> parser() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public com.google.protobuf.Parser<SigningOutput> getParserForType() {
+      return PARSER;
+    }
+
+    @java.lang.Override
+    public wallet.core.jni.proto.Ripple.SigningOutput getDefaultInstanceForType() {
+      return DEFAULT_INSTANCE;
+    }
+
+  }
+
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_TW_Ripple_Proto_SigningInput_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_TW_Ripple_Proto_SigningInput_fieldAccessorTable;
+  private static final com.google.protobuf.Descriptors.Descriptor
+    internal_static_TW_Ripple_Proto_SigningOutput_descriptor;
+  private static final 
+    com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
+      internal_static_TW_Ripple_Proto_SigningOutput_fieldAccessorTable;
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+  public static com.google.protobuf.Descriptors.FileDescriptor
+      getDescriptor() {
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+      "\001(\003\022\023\n\013private_key\030\t \001(\014\" \n\rSigningOutpu" +
+      "t\022\017\n\007encoded\030\001 \001(\014B\027\n\025wallet.core.jni.pr" +
+      "otob\006proto3"
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+    com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
+        new com.google.protobuf.Descriptors.FileDescriptor.    InternalDescriptorAssigner() {
+          public com.google.protobuf.ExtensionRegistry assignDescriptors(
+              com.google.protobuf.Descriptors.FileDescriptor root) {
+            descriptor = root;
+            return null;
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+        };
+    com.google.protobuf.Descriptors.FileDescriptor
+      .internalBuildGeneratedFileFrom(descriptorData,
+        new com.google.protobuf.Descriptors.FileDescriptor[] {
+        }, assigner);
+    internal_static_TW_Ripple_Proto_SigningInput_descriptor =
+      getDescriptor().getMessageTypes().get(0);
+    internal_static_TW_Ripple_Proto_SigningInput_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_TW_Ripple_Proto_SigningInput_descriptor,
+        new java.lang.String[] { "Amount", "Fee", "Sequence", "LastLedgerSequence", "Account", "Destination", "DestinationTag", "Flags", "PrivateKey", });
+    internal_static_TW_Ripple_Proto_SigningOutput_descriptor =
+      getDescriptor().getMessageTypes().get(1);
+    internal_static_TW_Ripple_Proto_SigningOutput_fieldAccessorTable = new
+      com.google.protobuf.GeneratedMessageV3.FieldAccessorTable(
+        internal_static_TW_Ripple_Proto_SigningOutput_descriptor,
+        new java.lang.String[] { "Encoded", });
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+}
diff --git a/README.md b/README.md
index c6f99ed6a2e..4b2d1cc9da1 100644
--- a/README.md
+++ b/README.md
@@ -10,8 +10,7 @@ Trust Wallet Core is a cross-platform library that implements low-level cryptogr
 
 ### Supported Blockchains
 
-<a href="https://bitcoin.org" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/0.png" width="32" /></a> <a href="https://litecoin.org/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/2.png" width="32" /></a> <a href="https://www.bitcoincash.org/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/145.png" width="32" /></a>  <a href="https://ethereum.org/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/60.png" width="34" /></a> <a href="https://www.dash.org/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/5.png" width="32" /></a> <a href="https://zcoin.io/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/136.png" width="32" /></a> <a href="https://z.cash/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/133.png" width="32" /></a> <a href="https://testnet.binance.org" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/714.png" width="32" /></a>
-
+<a href="https://bitcoin.org" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/0.png" width="32" /></a> <a href="https://litecoin.org/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/2.png" width="32" /></a> <a href="https://www.bitcoincash.org/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/145.png" width="32" /></a>  <a href="https://ethereum.org/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/60.png" width="34" /></a> <a href="https://www.dash.org/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/5.png" width="32" /></a> <a href="https://zcoin.io/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/136.png" width="32" /></a> <a href="https://z.cash/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/133.png" width="32" /></a> <a href="https://testnet.binance.org" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/714.png" width="32" /></a> <a href="https://ripple.com/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/144.png" width="30" /></a> <a href="https://wanchain.org/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/5718350.png" width="32" /></a> <a href="https://www.vechain.org/" target="_blank"><img src="https://raw.githubusercontent.com/TrustWallet/tokens/master/coins/818.png" width="32" /></a>
 
 # Usage
 
diff --git a/docs/Contributing.md b/docs/Contributing.md
index 351c8a898da..c0ef9ab389d 100644
--- a/docs/Contributing.md
+++ b/docs/Contributing.md
@@ -52,6 +52,10 @@ Use the `bootstrap.sh` script in the root folder to quickly build and test. Afte
 * Android: `tools/android-test`
 * iOS: `tools/ios-test`
 
+How to generate a Xcode project:
+
+`cmake -Bxcode -GXcode -DCMAKE_BUILD_TYPE=Debug -DGIT_SUBMODULE=OFF`
+
 ## C Headers
 
 The wallet core code generator parses C headers for class and struct definitions. Headers need to be in the `include/TrustWalletCode` folder and start with the `TW` prefix followed by the class or sturct name. Inside each header file there needs to be exactly one class or struct defition.
diff --git a/include/TrustWalletCore/TWRippleProto.h b/include/TrustWalletCore/TWRippleProto.h
new file mode 100644
index 00000000000..8c5c9f14460
--- /dev/null
+++ b/include/TrustWalletCore/TWRippleProto.h
@@ -0,0 +1,12 @@
+// Copyright © 2017-2018 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+#pragma once
+
+#include "TWData.h"
+
+typedef TWData *_Nonnull TW_Ripple_Proto_SigningInput;
+typedef TWData *_Nonnull TW_Ripple_Proto_SigningOutput;
diff --git a/include/TrustWalletCore/TWRippleSigner.h b/include/TrustWalletCore/TWRippleSigner.h
new file mode 100644
index 00000000000..88f885a94f5
--- /dev/null
+++ b/include/TrustWalletCore/TWRippleSigner.h
@@ -0,0 +1,23 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+#pragma once
+
+#include "TWBase.h"
+#include "TWData.h"
+#include "TWRippleProto.h"
+
+TW_EXTERN_C_BEGIN
+
+/// Helper class to sign Wanchain transactions.
+TW_EXPORT_CLASS
+struct TWRippleSigner;
+
+/// Signs a transaction.
+TW_EXPORT_STATIC_METHOD
+TW_Ripple_Proto_SigningOutput TWRippleSignerSign(TW_Ripple_Proto_SigningInput input);
+
+TW_EXTERN_C_END
diff --git a/src/Bitcoin/TransactionSigner.cpp b/src/Bitcoin/TransactionSigner.cpp
index 7bfb9dd04b6..df0512e0107 100644
--- a/src/Bitcoin/TransactionSigner.cpp
+++ b/src/Bitcoin/TransactionSigner.cpp
@@ -217,10 +217,10 @@ Data TransactionSigner<Transaction>::pushAll(const std::vector<Data>& results) {
             data.push_back(encodeNumber(result[0]));
         } else if (result.size() < OP_PUSHDATA1) {
             data.push_back(static_cast<uint8_t>(result.size()));
-        } else if (result.size() <= 0xff) { // swiftlint:disable:this empty_count
+        } else if (result.size() <= 0xff) {
             data.push_back(OP_PUSHDATA1);
             data.push_back(static_cast<uint8_t>(result.size()));
-        } else if (result.size() <= 0xffff) { // swiftlint:disable:this empty_count
+        } else if (result.size() <= 0xffff) {
             data.push_back(OP_PUSHDATA2);
             encode16(result.size(), data);
         } else {
diff --git a/src/Ripple/BinaryCoding.h b/src/Ripple/BinaryCoding.h
new file mode 100644
index 00000000000..7ce2edc3762
--- /dev/null
+++ b/src/Ripple/BinaryCoding.h
@@ -0,0 +1,77 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+#pragma once
+
+#include <stddef.h>
+#include <stdint.h>
+#include <vector>
+
+namespace TW {
+namespace Ripple {
+
+enum class FieldType;
+
+/// Encodes a 16-bit value into the provided buffer.
+static inline void encode16(uint16_t val, std::vector<uint8_t>& data) {
+    data.push_back (static_cast<unsigned char> (val >> 8));
+    data.push_back (static_cast<unsigned char> (val & 0xff));
+}
+
+/// Encodes a 32-bit value into the provided buffer.
+static inline void encode32(uint32_t val, std::vector<uint8_t>& data) {
+    data.push_back(static_cast<uint8_t>((val >> 24)));
+    data.push_back(static_cast<uint8_t>((val >> 16) & 0xff));
+    data.push_back(static_cast<uint8_t>((val >> 8) & 0xff));
+    data.push_back(static_cast<uint8_t>(val));
+}
+
+/// Encodes a 64-bit value into the provided buffer.
+static inline void encode64(uint64_t val, std::vector<uint8_t>& data) {
+    data.push_back(static_cast<uint8_t>((val >> 56)));
+    data.push_back(static_cast<uint8_t>((val >> 48) & 0xff));
+    data.push_back(static_cast<uint8_t>((val >> 40) & 0xff));
+    data.push_back(static_cast<uint8_t>((val >> 32) & 0xff));
+    data.push_back(static_cast<uint8_t>((val >> 24) & 0xff));
+    data.push_back(static_cast<uint8_t>((val >> 16) & 0xff));
+    data.push_back(static_cast<uint8_t>((val >> 8) & 0xff));
+    data.push_back(static_cast<uint8_t>(val & 0xff));
+}
+
+/// Encodes a field type.
+static inline void encodeType(FieldType type, int key, std::vector<uint8_t>& data) {
+    const auto typeValue = static_cast<int>(type);
+    if (key <= 0xf) {
+        data.push_back(static_cast<uint8_t>((typeValue << 4) | key));
+    } else {
+        data.push_back(static_cast<uint8_t>(typeValue << 4));
+        data.push_back(static_cast<uint8_t>(key));
+    }
+}
+
+/// Encodes a variable length.
+static inline void encodeVariableLength(int length, std::vector<uint8_t>& data) {
+    if (length <= 192) {
+        data.push_back(static_cast<unsigned char> (length));
+    } else if (length <= 12480) {
+        length -= 193;
+        data.push_back(static_cast<unsigned char> (length >> 8));
+        data.push_back(static_cast<unsigned char> (length & 0xff));
+    } else if (length <= 918744) {
+        length -= 12481;
+        data.push_back(static_cast<unsigned char> (length >> 16));
+        data.push_back(static_cast<unsigned char> ((length >> 8) & 0xff));
+        data.push_back(static_cast<unsigned char> (length & 0xff));
+    }
+}
+
+/// Encodes a variable length bytes.
+static inline void encodeBytes(std::vector<uint8_t> bytes, std::vector<uint8_t>& data) {
+    encodeVariableLength(bytes.size(), data);
+    data.insert(data.end(), bytes.begin(), bytes.end());
+}
+
+}} // namespace
diff --git a/src/Ripple/Signer.cpp b/src/Ripple/Signer.cpp
new file mode 100644
index 00000000000..5aba000462f
--- /dev/null
+++ b/src/Ripple/Signer.cpp
@@ -0,0 +1,28 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+#include "Signer.h"
+#include "BinaryCoding.h"
+#include "../Hash.h"
+
+using namespace TW;
+using namespace TW::Ripple;
+
+const int MIN_FEE = 10;
+const int MAX_FEE = 1000000;
+const int FLAG_FULLY_CANONICAL = 0x80000000;
+
+void Signer::sign(const PrivateKey& privateKey, Transaction& transaction) const noexcept {
+    /// See https://github.com/trezor/trezor-core/blob/master/src/apps/ripple/sign_tx.py#L59
+    transaction.flags |= FLAG_FULLY_CANONICAL;
+    transaction.pub_key = privateKey.getPublicKey(true);
+
+    auto unsignedTx = transaction.getPreImage();
+    auto hash = Hash::sha512(unsignedTx);
+    auto half = Data(hash.begin(), hash.begin() + 32);
+
+    transaction.signature = privateKey.signAsDER(half);
+}
diff --git a/src/Ripple/Signer.h b/src/Ripple/Signer.h
new file mode 100644
index 00000000000..cd57f77a218
--- /dev/null
+++ b/src/Ripple/Signer.h
@@ -0,0 +1,29 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+#pragma once
+
+#include "../Data.h"
+#include "../Hash.h"
+#include "../PrivateKey.h"
+#include "Transaction.h"
+
+namespace TW {
+namespace Ripple {
+
+/// Helper class that performs Ripple transaction signing.
+class Signer {
+public:
+    /// Signs the given transaction.
+    void sign(const PrivateKey& privateKey, Transaction& transaction) const noexcept;
+};
+
+}} // namespace
+
+/// Wrapper for C interface.
+struct TWRippleSigner {
+    TW::Ripple::Signer impl;
+};
diff --git a/src/Ripple/Transaction.cpp b/src/Ripple/Transaction.cpp
new file mode 100644
index 00000000000..a948b862ac8
--- /dev/null
+++ b/src/Ripple/Transaction.cpp
@@ -0,0 +1,87 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+#include "Transaction.h"
+#include "BinaryCoding.h"
+#include "../HexCoding.h"
+
+using namespace TW;
+using namespace TW::Ripple;
+
+const int NETWORK_PREFIX = 0x53545800;
+const int64_t MAX_ALLOWED_AMOUNT = 100000000000;
+
+Data Transaction::serialize() const {
+    auto data = Data();
+    /// field must be sorted by field type then by field name
+    /// "type"
+    encodeType(FieldType::int16, 2, data);
+    encode16(uint16_t(TransactionType::payment), data);
+    /// "flags"
+    encodeType(FieldType::int32, 2, data);
+    encode32(flags, data);
+    /// "sequence"
+    encodeType(FieldType::int32, 4, data);
+    encode32(sequence, data);
+    /// "destinationTag"
+    if (destination_tag > 0) {
+        encodeType(FieldType::int32, 14, data);
+        encode32(destination_tag, data);
+    }
+    /// "lastLedgerSequence"
+    if (last_ledger_sequence > 0) {
+        encodeType(FieldType::int32, 27, data);
+        encode32(last_ledger_sequence, data);
+    }
+    /// "amount"
+    encodeType(FieldType::amount, 1, data);
+    append(data, serializeAmount(amount));
+    /// "fee"
+    encodeType(FieldType::amount, 8, data);
+    append(data, serializeAmount(fee));
+    /// "signingPubKey"
+    if (!pub_key.empty()) {
+        encodeType(FieldType::vl, 3, data);
+        encodeBytes(pub_key, data);
+    }
+    /// "txnSignature"
+    if (!signature.empty()) {
+        encodeType(FieldType::vl, 4, data);
+        encodeBytes(signature, data);
+    }
+    /// "account"
+    encodeType(FieldType::account, 1, data);
+    encodeBytes(serializeAddress(account), data);
+    /// "destination"
+    encodeType(FieldType::account, 3, data);
+    encodeBytes(serializeAddress(destination), data);
+    return data;
+}
+
+Data Transaction::getPreImage() const {
+    auto preImage = Data();
+    encode32(NETWORK_PREFIX, preImage);
+    append(preImage, serialize());
+    return preImage;
+}
+
+Data Transaction::serializeAmount(int64_t amount) {
+    if (amount > MAX_ALLOWED_AMOUNT || amount < 0) {
+        return Data();
+    }
+    auto data = Data();
+    encode64(uint64_t(amount), data);
+    /// clear first bit to indicate XRP
+    data[0] &= 0x7F;
+    /// set second bit to indicate positive number
+    data[0] |= 0x40;
+    return data;
+}
+
+Data Transaction::serializeAddress(Address address) {
+    auto data = Data(&address.bytes[0] + 1, &address.bytes[21]);
+    return data;
+}
diff --git a/src/Ripple/Transaction.h b/src/Ripple/Transaction.h
new file mode 100644
index 00000000000..6cb89c9df77
--- /dev/null
+++ b/src/Ripple/Transaction.h
@@ -0,0 +1,65 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+#pragma once
+
+#include "../proto/Ripple.pb.h"
+#include "../Data.h"
+#include "Address.h"
+
+namespace TW {
+namespace Ripple {
+
+enum class FieldType: int {
+    int16   = 1,
+    int32   = 2,
+    amount  = 6,
+    vl      = 7,
+    account = 8
+};
+
+enum class TransactionType {
+    payment = 0
+};
+
+class Transaction {
+    /// We only support transaction types other than the Payment transaction.
+    /// Non-XRP currencies are not supported. Float and negative amounts are not supported.
+    /// See https://github.com/trezor/trezor-core/tree/master/src/apps/ripple#transactions
+public:
+    int64_t amount;
+    int64_t fee;
+    int64_t flags;
+    int32_t sequence;
+    int32_t last_ledger_sequence;
+    Address account;
+    Address destination;
+    int64_t destination_tag;
+    Data pub_key;
+    Data signature;
+
+    Transaction() = default;
+    Transaction(int64_t amount, int64_t fee, int64_t flags, int32_t sequence, int32_t last_ledger_sequence, Address account, Address destination, int64_t destination_tag)
+    : amount(amount)
+    , fee(fee)
+    , flags(flags)
+    , sequence(sequence)
+    , last_ledger_sequence(last_ledger_sequence)
+    , account(account)
+    , destination(destination)
+    , destination_tag(destination_tag)
+    {}
+
+public:
+    /// simplified serialization format tailored for Payment transaction type exclusively.
+    Data serialize() const;
+    Data getPreImage() const;
+
+    static Data serializeAmount(int64_t amount);
+    static Data serializeAddress(Address address);
+};
+
+}} // namespace
diff --git a/src/Zcash/Transaction.h b/src/Zcash/Transaction.h
index 9cb74468c35..49294ea43d0 100644
--- a/src/Zcash/Transaction.h
+++ b/src/Zcash/Transaction.h
@@ -70,8 +70,3 @@ struct Transaction {
 };
 
 }} // namespace
-
-/// Wrapper for C interface.
-struct TWZcashTransaction {
-    TW::Zcash::Transaction impl;
-};
diff --git a/src/interface/TWCoinTypeConfiguration.cpp b/src/interface/TWCoinTypeConfiguration.cpp
index 901270aaa72..5835e15f45b 100644
--- a/src/interface/TWCoinTypeConfiguration.cpp
+++ b/src/interface/TWCoinTypeConfiguration.cpp
@@ -54,8 +54,6 @@ int TWCoinTypeConfigurationGetDecimals(enum TWCoinType type) {
     case TWCoinTypeVeChain:
     case TWCoinTypeWanChain:
         return 18;
-    case TWCoinTypeRipple:
-        return 15;
     case TWCoinTypeBitcoinCash:
     case TWCoinTypeBitcoin:
     case TWCoinTypeDash:
@@ -64,6 +62,7 @@ int TWCoinTypeConfigurationGetDecimals(enum TWCoinType type) {
     case TWCoinTypeZcoin:
     case TWCoinTypeZcash:
      return 8;
+    case TWCoinTypeRipple:
     case TWCoinTypeTron:
         return 6;
     case TWCoinTypeEOS: //TODO
diff --git a/src/interface/TWRippleSigner.cpp b/src/interface/TWRippleSigner.cpp
new file mode 100644
index 00000000000..12b2be51ea2
--- /dev/null
+++ b/src/interface/TWRippleSigner.cpp
@@ -0,0 +1,40 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+#include <TrustWalletCore/TWRippleSigner.h>
+
+#include "../Ripple/Signer.h"
+#include "../proto/Ripple.pb.h"
+
+using namespace TW;
+using namespace TW::Ripple;
+
+TW_Ripple_Proto_SigningOutput TWRippleSignerSign(TW_Ripple_Proto_SigningInput data) {
+    Proto::SigningInput input;
+    input.ParseFromArray(TWDataBytes(data), TWDataSize(data));
+
+    auto key = PrivateKey(Data(input.private_key().begin(), input.private_key().end()));
+    auto transaction = Transaction(
+        /* amount */input.amount(),
+        /* fee */input.fee(),
+        /* flags */input.flags(),
+        /* sequence */input.sequence(),
+        /* last_ledger_sequence */input.last_ledger_sequence(),
+        /* account */Address(input.account()),
+        /* destination */Address(input.destination()),
+        /* destination_tag*/input.destination_tag()
+    );
+
+    auto signer = Signer();
+    signer.sign(key, transaction);
+
+    auto protoOutput = Proto::SigningOutput();
+    auto encoded = transaction.serialize();
+    protoOutput.set_encoded(encoded.data(), encoded.size());
+
+    auto serialized = protoOutput.SerializeAsString();
+    return TWDataCreateWithBytes(reinterpret_cast<const uint8_t *>(serialized.data()), serialized.size());
+}
diff --git a/src/proto/Ripple.proto b/src/proto/Ripple.proto
new file mode 100644
index 00000000000..8d0be3c317e
--- /dev/null
+++ b/src/proto/Ripple.proto
@@ -0,0 +1,30 @@
+syntax = "proto3";
+
+package TW.Ripple.Proto;
+option java_package = "wallet.core.jni.proto";
+
+// Input data necessary to create a signed transaction.
+message SigningInput {
+    int64 amount = 1;
+
+    int64 fee = 2;
+
+    int32 sequence = 3;
+
+    int32 last_ledger_sequence = 4;
+
+    string account = 5;
+
+    string destination = 6;
+
+    int64 destination_tag = 7;
+
+    int64 flags = 8;
+
+    bytes private_key = 9;
+}
+
+// Transaction signing output.
+message SigningOutput {
+    bytes encoded = 1;
+}
diff --git a/swift/Sources/CoinType.swift b/swift/Sources/CoinType.swift
index 3a718194613..2aa08505acf 100644
--- a/swift/Sources/CoinType.swift
+++ b/swift/Sources/CoinType.swift
@@ -20,7 +20,6 @@ public enum CoinType: UInt32 {
     case icon = 74
     case litecoin = 2
     case poa = 178
-    case test = 1
     case thunderToken = 1001
     case tomoChain = 889
     case tron = 195
diff --git a/swift/Sources/Ripple.pb.swift b/swift/Sources/Ripple.pb.swift
new file mode 100644
index 00000000000..e6b94cb1685
--- /dev/null
+++ b/swift/Sources/Ripple.pb.swift
@@ -0,0 +1,172 @@
+// DO NOT EDIT.
+//
+// Generated by the Swift generator plugin for the protocol buffer compiler.
+// Source: Ripple.proto
+//
+// For information on using the generated types, please see the documenation:
+//   https://github.com/apple/swift-protobuf/
+
+import Foundation
+import SwiftProtobuf
+
+// If the compiler emits an error on this type, it is because this file
+// was generated by a version of the `protoc` Swift plug-in that is
+// incompatible with the version of SwiftProtobuf to which you are linking.
+// Please ensure that your are building against the same version of the API
+// that was used to generate this file.
+fileprivate struct _GeneratedWithProtocGenSwiftVersion: SwiftProtobuf.ProtobufAPIVersionCheck {
+  struct _2: SwiftProtobuf.ProtobufAPIVersion_2 {}
+  typealias Version = _2
+}
+
+/// Input data necessary to create a signed transaction.
+public struct TW_Ripple_Proto_SigningInput {
+  // SwiftProtobuf.Message conformance is added in an extension below. See the
+  // `Message` and `Message+*Additions` files in the SwiftProtobuf library for
+  // methods supported on all messages.
+
+  public var amount: Int64 = 0
+
+  public var fee: Int64 = 0
+
+  public var sequence: Int32 = 0
+
+  public var lastLedgerSequence: Int32 = 0
+
+  public var account: String = String()
+
+  public var destination: String = String()
+
+  public var destinationTag: Int64 = 0
+
+  public var flags: Int64 = 0
+
+  public var privateKey: Data = SwiftProtobuf.Internal.emptyData
+
+  public var unknownFields = SwiftProtobuf.UnknownStorage()
+
+  public init() {}
+}
+
+/// Transaction signing output.
+public struct TW_Ripple_Proto_SigningOutput {
+  // SwiftProtobuf.Message conformance is added in an extension below. See the
+  // `Message` and `Message+*Additions` files in the SwiftProtobuf library for
+  // methods supported on all messages.
+
+  public var encoded: Data = SwiftProtobuf.Internal.emptyData
+
+  public var unknownFields = SwiftProtobuf.UnknownStorage()
+
+  public init() {}
+}
+
+// MARK: - Code below here is support for the SwiftProtobuf runtime.
+
+fileprivate let _protobuf_package = "TW.Ripple.Proto"
+
+extension TW_Ripple_Proto_SigningInput: SwiftProtobuf.Message, SwiftProtobuf._MessageImplementationBase, SwiftProtobuf._ProtoNameProviding {
+  public static let protoMessageName: String = _protobuf_package + ".SigningInput"
+  public static let _protobuf_nameMap: SwiftProtobuf._NameMap = [
+    1: .same(proto: "amount"),
+    2: .same(proto: "fee"),
+    3: .same(proto: "sequence"),
+    4: .standard(proto: "last_ledger_sequence"),
+    5: .same(proto: "account"),
+    6: .same(proto: "destination"),
+    7: .standard(proto: "destination_tag"),
+    8: .same(proto: "flags"),
+    9: .standard(proto: "private_key"),
+  ]
+
+  public mutating func decodeMessage<D: SwiftProtobuf.Decoder>(decoder: inout D) throws {
+    while let fieldNumber = try decoder.nextFieldNumber() {
+      switch fieldNumber {
+      case 1: try decoder.decodeSingularInt64Field(value: &self.amount)
+      case 2: try decoder.decodeSingularInt64Field(value: &self.fee)
+      case 3: try decoder.decodeSingularInt32Field(value: &self.sequence)
+      case 4: try decoder.decodeSingularInt32Field(value: &self.lastLedgerSequence)
+      case 5: try decoder.decodeSingularStringField(value: &self.account)
+      case 6: try decoder.decodeSingularStringField(value: &self.destination)
+      case 7: try decoder.decodeSingularInt64Field(value: &self.destinationTag)
+      case 8: try decoder.decodeSingularInt64Field(value: &self.flags)
+      case 9: try decoder.decodeSingularBytesField(value: &self.privateKey)
+      default: break
+      }
+    }
+  }
+
+  public func traverse<V: SwiftProtobuf.Visitor>(visitor: inout V) throws {
+    if self.amount != 0 {
+      try visitor.visitSingularInt64Field(value: self.amount, fieldNumber: 1)
+    }
+    if self.fee != 0 {
+      try visitor.visitSingularInt64Field(value: self.fee, fieldNumber: 2)
+    }
+    if self.sequence != 0 {
+      try visitor.visitSingularInt32Field(value: self.sequence, fieldNumber: 3)
+    }
+    if self.lastLedgerSequence != 0 {
+      try visitor.visitSingularInt32Field(value: self.lastLedgerSequence, fieldNumber: 4)
+    }
+    if !self.account.isEmpty {
+      try visitor.visitSingularStringField(value: self.account, fieldNumber: 5)
+    }
+    if !self.destination.isEmpty {
+      try visitor.visitSingularStringField(value: self.destination, fieldNumber: 6)
+    }
+    if self.destinationTag != 0 {
+      try visitor.visitSingularInt64Field(value: self.destinationTag, fieldNumber: 7)
+    }
+    if self.flags != 0 {
+      try visitor.visitSingularInt64Field(value: self.flags, fieldNumber: 8)
+    }
+    if !self.privateKey.isEmpty {
+      try visitor.visitSingularBytesField(value: self.privateKey, fieldNumber: 9)
+    }
+    try unknownFields.traverse(visitor: &visitor)
+  }
+
+  public static func ==(lhs: TW_Ripple_Proto_SigningInput, rhs: TW_Ripple_Proto_SigningInput) -> Bool {
+    if lhs.amount != rhs.amount {return false}
+    if lhs.fee != rhs.fee {return false}
+    if lhs.sequence != rhs.sequence {return false}
+    if lhs.lastLedgerSequence != rhs.lastLedgerSequence {return false}
+    if lhs.account != rhs.account {return false}
+    if lhs.destination != rhs.destination {return false}
+    if lhs.destinationTag != rhs.destinationTag {return false}
+    if lhs.flags != rhs.flags {return false}
+    if lhs.privateKey != rhs.privateKey {return false}
+    if lhs.unknownFields != rhs.unknownFields {return false}
+    return true
+  }
+}
+
+extension TW_Ripple_Proto_SigningOutput: SwiftProtobuf.Message, SwiftProtobuf._MessageImplementationBase, SwiftProtobuf._ProtoNameProviding {
+  public static let protoMessageName: String = _protobuf_package + ".SigningOutput"
+  public static let _protobuf_nameMap: SwiftProtobuf._NameMap = [
+    1: .same(proto: "encoded"),
+  ]
+
+  public mutating func decodeMessage<D: SwiftProtobuf.Decoder>(decoder: inout D) throws {
+    while let fieldNumber = try decoder.nextFieldNumber() {
+      switch fieldNumber {
+      case 1: try decoder.decodeSingularBytesField(value: &self.encoded)
+      default: break
+      }
+    }
+  }
+
+  public func traverse<V: SwiftProtobuf.Visitor>(visitor: inout V) throws {
+    if !self.encoded.isEmpty {
+      try visitor.visitSingularBytesField(value: self.encoded, fieldNumber: 1)
+    }
+    try unknownFields.traverse(visitor: &visitor)
+  }
+
+  public static func ==(lhs: TW_Ripple_Proto_SigningOutput, rhs: TW_Ripple_Proto_SigningOutput) -> Bool {
+    if lhs.encoded != rhs.encoded {return false}
+    if lhs.unknownFields != rhs.unknownFields {return false}
+    return true
+  }
+}
diff --git a/swift/Sources/RippleSigner.swift b/swift/Sources/RippleSigner.swift
new file mode 100644
index 00000000000..dccb18a7b28
--- /dev/null
+++ b/swift/Sources/RippleSigner.swift
@@ -0,0 +1,30 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+//
+// This is a GENERATED FILE, changes made here WILL BE LOST.
+//
+
+import Foundation
+
+public final class RippleSigner {
+
+    public static func sign(input: TW_Ripple_Proto_SigningInput) -> TW_Ripple_Proto_SigningOutput {
+        let inputData = TWDataCreateWithNSData(try! input.serializedData())
+        defer {
+            TWDataDelete(inputData)
+        }
+        let resultData = TWDataNSData(TWRippleSignerSign(inputData))
+        return try! TW_Ripple_Proto_SigningOutput(serializedData: resultData)
+    }
+
+    let rawValue: OpaquePointer
+
+    init(rawValue: OpaquePointer) {
+        self.rawValue = rawValue
+    }
+
+
+}
diff --git a/swift/Sources/TrustWalletCore.h b/swift/Sources/TrustWalletCore.h
index aa785d1e767..f893b8f40e4 100644
--- a/swift/Sources/TrustWalletCore.h
+++ b/swift/Sources/TrustWalletCore.h
@@ -44,6 +44,7 @@ FOUNDATION_EXPORT const unsigned char TrustWalletCoreVersionString[];
 #include <TrustWalletCore/TWPublicKey.h>
 #include <TrustWalletCore/TWPurpose.h>
 #include <TrustWalletCore/TWRippleAddress.h>
+#include <TrustWalletCore/TWRippleSigner.h>
 #include <TrustWalletCore/TWTendermintAddress.h>
 #include <TrustWalletCore/TWUInt256.h>
 #include <TrustWalletCore/TWVeChainSigner.h>
diff --git a/swift/Tests/RippleTests.swift b/swift/Tests/RippleTests.swift
index 520b26a3bb5..c15edd4e484 100644
--- a/swift/Tests/RippleTests.swift
+++ b/swift/Tests/RippleTests.swift
@@ -7,6 +7,9 @@
 import XCTest
 import TrustWalletCore
 
+typealias RippleSigningInput = TW_Ripple_Proto_SigningInput
+typealias RiipleSigningOutput = TW_Ripple_Proto_SigningOutput
+
 class RippleTests: XCTestCase {
 
     func testAddress() {
@@ -16,4 +19,18 @@ class RippleTests: XCTestCase {
 
         XCTAssertEqual(address?.description, "r36yxStAh7qgTQNHTzjZvXybCTzUFhrfav")
     }
+
+    func testSigner() {
+        let input = RippleSigningInput.with {
+            $0.amount = 29_000_000
+            $0.fee = 200_000
+            $0.sequence = 1 // from account info api
+            $0.account = "rDpysuumkweqeC7XdNgYNtzL5GxbdsmrtF"
+            $0.destination = "rU893viamSnsfP3zjzM2KPxjqZjXSXK6VF"
+            $0.privateKey = Data(hexString: "e008b363373ceedbec3c3e9b1c28c9ff455b0a6bd612b205b7ab750144c284d7")!
+        }
+
+        let output = RippleSigner.sign(input: input)
+        XCTAssertEqual(output.encoded.hexString, "12000022800000002400000001614000000001ba8140684000000000030d40732103417452a634b07d2f8bd9f0bfa2a31e1fe828bf3fa77beecb0d0fc32ee18ecfe074473045022100e5d9cdc97625ed1eabb4e649e45b46fc2cec80f9f97b642e84bfa15ae8c52d9e02206c0992307a01cbceb559788f36fccb197a8af6fc271dd2733362887c16008a2681148400b6b6d08d5d495653d73eda6804c249a5148883148132e4e20aecf29090ac428a9c43f230a829220d")
+    }
 }
diff --git a/swift/TrustWalletCore.xcodeproj/project.pbxproj b/swift/TrustWalletCore.xcodeproj/project.pbxproj
index a65c1d3c68f..212d4f127fb 100644
--- a/swift/TrustWalletCore.xcodeproj/project.pbxproj
+++ b/swift/TrustWalletCore.xcodeproj/project.pbxproj
@@ -370,6 +370,18 @@
 		BB21105E221C039B00571DF7 /* Address.cpp in Sources */ = {isa = PBXBuildFile; fileRef = BB21105C221C039B00571DF7 /* Address.cpp */; };
 		BB211060221C03D500571DF7 /* RippleTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = BB21105F221C03D500571DF7 /* RippleTests.swift */; };
 		BB211062221C045000571DF7 /* RippleAddress.swift in Sources */ = {isa = PBXBuildFile; fileRef = BB211061221C045000571DF7 /* RippleAddress.swift */; };
+		BB2422CF22217AE7000663D0 /* TWRippleSigner.h in Headers */ = {isa = PBXBuildFile; fileRef = BB2422CD22217AE7000663D0 /* TWRippleSigner.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		BB2422D022217AE7000663D0 /* TWRippleProto.h in Headers */ = {isa = PBXBuildFile; fileRef = BB2422CE22217AE7000663D0 /* TWRippleProto.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		BB2422D322217B08000663D0 /* RippleSigner.swift in Sources */ = {isa = PBXBuildFile; fileRef = BB2422D122217B08000663D0 /* RippleSigner.swift */; };
+		BB2422D422217B08000663D0 /* Ripple.pb.swift in Sources */ = {isa = PBXBuildFile; fileRef = BB2422D222217B08000663D0 /* Ripple.pb.swift */; };
+		BB2422D722217B4D000663D0 /* Ripple.pb.cc in Sources */ = {isa = PBXBuildFile; fileRef = BB2422D522217B4D000663D0 /* Ripple.pb.cc */; };
+		BB2422D822217B4D000663D0 /* Ripple.pb.h in Headers */ = {isa = PBXBuildFile; fileRef = BB2422D622217B4D000663D0 /* Ripple.pb.h */; };
+		BB2422DE22217B58000663D0 /* Signer.h in Headers */ = {isa = PBXBuildFile; fileRef = BB2422D922217B58000663D0 /* Signer.h */; };
+		BB2422DF22217B58000663D0 /* Signer.cpp in Sources */ = {isa = PBXBuildFile; fileRef = BB2422DA22217B58000663D0 /* Signer.cpp */; };
+		BB2422E022217B58000663D0 /* Transaction.cpp in Sources */ = {isa = PBXBuildFile; fileRef = BB2422DB22217B58000663D0 /* Transaction.cpp */; };
+		BB2422E122217B58000663D0 /* BinaryCoding.h in Headers */ = {isa = PBXBuildFile; fileRef = BB2422DC22217B58000663D0 /* BinaryCoding.h */; };
+		BB2422E222217B58000663D0 /* Transaction.h in Headers */ = {isa = PBXBuildFile; fileRef = BB2422DD22217B58000663D0 /* Transaction.h */; };
+		BB2422E422217B90000663D0 /* TWRippleSigner.cpp in Sources */ = {isa = PBXBuildFile; fileRef = BB2422E322217B90000663D0 /* TWRippleSigner.cpp */; };
 		BB2E390B21F6EF17002A5139 /* TWZcashTAddress.h in Headers */ = {isa = PBXBuildFile; fileRef = BB2E390A21F6EF17002A5139 /* TWZcashTAddress.h */; settings = {ATTRIBUTES = (Public, ); }; };
 		BB3F05B2220BD93E008C6971 /* TAddress.cpp in Sources */ = {isa = PBXBuildFile; fileRef = BB3F05B0220BD93E008C6971 /* TAddress.cpp */; };
 		BB3F05B3220BD93E008C6971 /* TAddress.h in Headers */ = {isa = PBXBuildFile; fileRef = BB3F05B1220BD93E008C6971 /* TAddress.h */; };
@@ -818,6 +830,18 @@
 		BB21105C221C039B00571DF7 /* Address.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Address.cpp; sourceTree = "<group>"; };
 		BB21105F221C03D500571DF7 /* RippleTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RippleTests.swift; sourceTree = "<group>"; };
 		BB211061221C045000571DF7 /* RippleAddress.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RippleAddress.swift; sourceTree = "<group>"; };
+		BB2422CD22217AE7000663D0 /* TWRippleSigner.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TWRippleSigner.h; sourceTree = "<group>"; };
+		BB2422CE22217AE7000663D0 /* TWRippleProto.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TWRippleProto.h; sourceTree = "<group>"; };
+		BB2422D122217B08000663D0 /* RippleSigner.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = RippleSigner.swift; sourceTree = "<group>"; };
+		BB2422D222217B08000663D0 /* Ripple.pb.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = Ripple.pb.swift; sourceTree = "<group>"; };
+		BB2422D522217B4D000663D0 /* Ripple.pb.cc */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Ripple.pb.cc; sourceTree = "<group>"; };
+		BB2422D622217B4D000663D0 /* Ripple.pb.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Ripple.pb.h; sourceTree = "<group>"; };
+		BB2422D922217B58000663D0 /* Signer.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Signer.h; sourceTree = "<group>"; };
+		BB2422DA22217B58000663D0 /* Signer.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Signer.cpp; sourceTree = "<group>"; };
+		BB2422DB22217B58000663D0 /* Transaction.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Transaction.cpp; sourceTree = "<group>"; };
+		BB2422DC22217B58000663D0 /* BinaryCoding.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = BinaryCoding.h; sourceTree = "<group>"; };
+		BB2422DD22217B58000663D0 /* Transaction.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Transaction.h; sourceTree = "<group>"; };
+		BB2422E322217B90000663D0 /* TWRippleSigner.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = TWRippleSigner.cpp; sourceTree = "<group>"; };
 		BB2E390A21F6EF17002A5139 /* TWZcashTAddress.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TWZcashTAddress.h; sourceTree = "<group>"; };
 		BB3F05B0220BD93E008C6971 /* TAddress.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = TAddress.cpp; sourceTree = "<group>"; };
 		BB3F05B1220BD93E008C6971 /* TAddress.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = TAddress.h; sourceTree = "<group>"; };
@@ -857,6 +881,8 @@
 		61376FDB220CE38900573D0F /* proto */ = {
 			isa = PBXGroup;
 			children = (
+				BB2422D522217B4D000663D0 /* Ripple.pb.cc */,
+				BB2422D622217B4D000663D0 /* Ripple.pb.h */,
 				61722BF1220E45B900D7BA9A /* Binance.pb.cc */,
 				61722BEE220E45B900D7BA9A /* Binance.pb.h */,
 				61722BEF220E45B900D7BA9A /* Bitcoin.pb.cc */,
@@ -916,6 +942,8 @@
 		617358DF219DF043007BF637 /* TrustWalletCore */ = {
 			isa = PBXGroup;
 			children = (
+				BB2422CE22217AE7000663D0 /* TWRippleProto.h */,
+				BB2422CD22217AE7000663D0 /* TWRippleSigner.h */,
 				61CABAB421ED36F40086D9A0 /* TWAES.h */,
 				617358E2219DF043007BF637 /* TWBase.h */,
 				61AAD39A21DEF6D300B69A34 /* TWBase58.h */,
@@ -1187,6 +1215,8 @@
 		61735CB7219F88C2007BF637 /* Sources */ = {
 			isa = PBXGroup;
 			children = (
+				BB2422D222217B08000663D0 /* Ripple.pb.swift */,
+				BB2422D122217B08000663D0 /* RippleSigner.swift */,
 				61CABAB821ED37160086D9A0 /* AES.swift */,
 				61AAD3A421DEF72500B69A34 /* Base58.swift */,
 				6198EA8B21B811CD008CB60A /* Bech32Address.swift */,
@@ -1296,6 +1326,7 @@
 		61B159B321CC5DBB00CFE93B /* interface */ = {
 			isa = PBXGroup;
 			children = (
+				BB2422E322217B90000663D0 /* TWRippleSigner.cpp */,
 				61CABAB621ED37070086D9A0 /* TWAES.cpp */,
 				61AAD3A221DEF70800B69A34 /* TWBase58.cpp */,
 				61722C01220E461A00D7BA9A /* TWBech32Address.cpp */,
@@ -1524,6 +1555,11 @@
 		BB21105A221C039A00571DF7 /* Ripple */ = {
 			isa = PBXGroup;
 			children = (
+				BB2422DC22217B58000663D0 /* BinaryCoding.h */,
+				BB2422DA22217B58000663D0 /* Signer.cpp */,
+				BB2422D922217B58000663D0 /* Signer.h */,
+				BB2422DB22217B58000663D0 /* Transaction.cpp */,
+				BB2422DD22217B58000663D0 /* Transaction.h */,
 				BB21105B221C039A00571DF7 /* Address.h */,
 				BB21105C221C039B00571DF7 /* Address.cpp */,
 			);
@@ -1564,6 +1600,7 @@
 				61B159D421CC5DBB00CFE93B /* Bech32Address.h in Headers */,
 				61735AF9219DF044007BF637 /* bip32.h in Headers */,
 				61735B04219DF044007BF637 /* rand.h in Headers */,
+				BB2422CF22217AE7000663D0 /* TWRippleSigner.h in Headers */,
 				61735B0B219DF044007BF637 /* secp256k1.h in Headers */,
 				61735C13219DF044007BF637 /* ed25519-hash-custom.h in Headers */,
 				61735AFA219DF044007BF637 /* ecdsa.h in Headers */,
@@ -1619,6 +1656,7 @@
 				61722BD9220E455500D7BA9A /* TWBinanceProto.h in Headers */,
 				61735CB921A33D47007BF637 /* TWHash.h in Headers */,
 				61CABACF21ED781B0086D9A0 /* TWCoinType.h in Headers */,
+				BB2422E122217B58000663D0 /* BinaryCoding.h in Headers */,
 				61CABABB21ED41E50086D9A0 /* TWKeyDerivation.h in Headers */,
 				61B159CE21CC5DBB00CFE93B /* TransactionSigner.h in Headers */,
 				61735C83219DF044007BF637 /* TrustWalletCore.h in Headers */,
@@ -1653,6 +1691,7 @@
 				616E125F21AE14E8009798FC /* TWString.h in Headers */,
 				61B159DC21CC5DBB00CFE93B /* PublicKey.h in Headers */,
 				61735BFE219DF044007BF637 /* script.h in Headers */,
+				BB2422E222217B58000663D0 /* Transaction.h in Headers */,
 				61735C32219DF044007BF637 /* options.h in Headers */,
 				61735C1E219DF044007BF637 /* ed25519-keccak.h in Headers */,
 				61722BD7220E455500D7BA9A /* TWZcashTransactionSigner.h in Headers */,
@@ -1662,6 +1701,7 @@
 				61735C76219DF044007BF637 /* rfc7539.h in Headers */,
 				61735AFE219DF044007BF637 /* base32.h in Headers */,
 				61735B0F219DF044007BF637 /* ecrypt-sync.h in Headers */,
+				BB2422DE22217B58000663D0 /* Signer.h in Headers */,
 				61722BD8220E455500D7BA9A /* TWBitcoinProto.h in Headers */,
 				61FE4B1F221F732D00C65017 /* TWWanchainSigner.h in Headers */,
 				61735AFB219DF044007BF637 /* pbkdf2.h in Headers */,
@@ -1676,6 +1716,7 @@
 				61B159DF21CC5DBB00CFE93B /* PrivateKey.h in Headers */,
 				61CABACC21ED781B0086D9A0 /* TWHDVersion.h in Headers */,
 				61CABAC121ED42520086D9A0 /* scrypt.h in Headers */,
+				BB2422D022217AE7000663D0 /* TWRippleProto.h in Headers */,
 				61EE6B2221DEB46A001FBB79 /* UnspentSelector.h in Headers */,
 				61A9B3622200D85A00E601B3 /* Address.h in Headers */,
 				617744442220977E00C210D9 /* uint256.h in Headers */,
@@ -1686,6 +1727,7 @@
 				61B159DE21CC5DBB00CFE93B /* Hash.h in Headers */,
 				61735B0E219DF044007BF637 /* ecrypt-config.h in Headers */,
 				61735C49219DF044007BF637 /* range_proof.h in Headers */,
+				BB2422D822217B4D000663D0 /* Ripple.pb.h in Headers */,
 				61735B02219DF044007BF637 /* bip39.h in Headers */,
 				61735AF3219DF044007BF637 /* modm-donna-32bit.h in Headers */,
 				610AEF7421C8A934008ABB74 /* TWBitcoinTransactionSigner.h in Headers */,
@@ -1961,6 +2003,7 @@
 				61735BFC219DF044007BF637 /* hasher.c in Sources */,
 				6198EA7E21B6B9C2008CB60A /* Data.swift in Sources */,
 				61B159D021CC5DBB00CFE93B /* OutPoint.cpp in Sources */,
+				BB2422D422217B08000663D0 /* Ripple.pb.swift in Sources */,
 				61722BE8220E457D00D7BA9A /* EthereumChainID.swift in Sources */,
 				61FE4B21221F733E00C65017 /* WanchainSigner.swift in Sources */,
 				61FE4B4422208E5000C65017 /* VeChain.pb.cc in Sources */,
@@ -1980,6 +2023,7 @@
 				61735C12219DF044007BF637 /* ed25519-keccak.c in Sources */,
 				61735C57219DF044007BF637 /* blake2b.c in Sources */,
 				61B159EA21CC5DBB00CFE93B /* PublicKey.cpp in Sources */,
+				BB2422DF22217B58000663D0 /* Signer.cpp in Sources */,
 				61735C43219DF044007BF637 /* serialize.c in Sources */,
 				61735C75219DF044007BF637 /* chacha_merged.c in Sources */,
 				61735C47219DF044007BF637 /* xmr.c in Sources */,
@@ -1990,6 +2034,7 @@
 				61735C5E219DF044007BF637 /* address.c in Sources */,
 				61735C0C219DF044007BF637 /* curve25519-donna-scalarmult-base.c in Sources */,
 				BBA9012121FDAE4200D2CEF7 /* Transaction.cpp in Sources */,
+				BB2422E422217B90000663D0 /* TWRippleSigner.cpp in Sources */,
 				61722C0E220E461A00D7BA9A /* TWZcashTransactionSigner.cpp in Sources */,
 				616E122C21A78094009798FC /* Hash.swift in Sources */,
 				61735C0E219DF044007BF637 /* ed25519-donna-32bit-tables.c in Sources */,
@@ -2003,15 +2048,18 @@
 				6198EA6121B21702008CB60A /* TWFoundationString.m in Sources */,
 				61CABAD821ED782E0086D9A0 /* HDVersion.swift in Sources */,
 				61EE6B2321DEB46A001FBB79 /* UnspentSelector.cpp in Sources */,
+				BB2422D322217B08000663D0 /* RippleSigner.swift in Sources */,
 				615D9B9B21CED9C700878D22 /* Address.cpp in Sources */,
 				61735C6F219DF044007BF637 /* aes_modes.c in Sources */,
 				61CABAB921ED37160086D9A0 /* AES.swift in Sources */,
+				BB2422D722217B4D000663D0 /* Ripple.pb.cc in Sources */,
 				61722C06220E461A00D7BA9A /* TWTendermintAddress.cpp in Sources */,
 				61B159E121CC5DBB00CFE93B /* TWString+Hex.cpp in Sources */,
 				61A9B3522200103000E601B3 /* Transaction.cpp in Sources */,
 				61E44461221CD49E006A4FF1 /* Signer.cpp in Sources */,
 				61B159E221CC5DBB00CFE93B /* TWPublicKey.cpp in Sources */,
 				61735C90219E1658007BF637 /* UInt256.swift in Sources */,
+				BB2422E022217B58000663D0 /* Transaction.cpp in Sources */,
 				61735C39219DF044007BF637 /* ripemd160.c in Sources */,
 				61977CCF21C9B9EF00C385D5 /* BitcoinAddress.swift in Sources */,
 				61CABAD721ED782E0086D9A0 /* P2SHPrefix.swift in Sources */,
diff --git a/tests/Ripple/TransactionTests.cpp b/tests/Ripple/TransactionTests.cpp
new file mode 100644
index 00000000000..d0949e83e65
--- /dev/null
+++ b/tests/Ripple/TransactionTests.cpp
@@ -0,0 +1,104 @@
+// Copyright © 2017-2019 Trust.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+#include "gtest/gtest.h"
+#include "../src/Ripple/Address.h"
+#include "../src/Ripple/Transaction.h"
+#include "../src/Ripple/BinaryCoding.h"
+#include "../src/HexCoding.h"
+#include "../src/PrivateKey.h"
+#include "../src/PublicKey.h"
+
+using namespace std;
+using namespace TW;
+using namespace TW::Ripple;
+
+TEST(RippleTransaction, serializeAmount) {
+    /// From https://github.com/trezor/trezor-core/blob/master/tests/test_apps.ripple.serializer.py
+    auto data0 = Transaction::serializeAmount(0);
+    auto data1 = Transaction::serializeAmount(1);
+    auto data2 = Transaction::serializeAmount(93493429243);
+    auto data3 = Transaction::serializeAmount(25000000);
+
+    ASSERT_EQ(hex(data0), "4000000000000000");
+    ASSERT_EQ(hex(data1), "4000000000000001");
+    ASSERT_EQ(hex(data2), "40000015c4a483fb");
+    ASSERT_EQ(hex(data3), "40000000017d7840");
+}
+
+TEST(RippleTransaction, serialize) {
+    /// From https://github.com/trezor/trezor-core/blob/master/tests/test_apps.ripple.serializer.py
+    auto account = Address("r9TeThyi5xiuUUrFjtPKZiHcDxs7K9H6Rb");
+    auto destination = Address("r4BPgS7DHebQiU31xWELvZawwSG2fSPJ7C");
+    auto tx1 = Transaction(
+       /* amount */25000000,
+       /* fee */10,
+       /* flags */0,
+       /* sequence */2,
+       /* last_ledger_sequence */0,
+       /* account */account,
+       /* destination */destination,
+       /* destination_tag*/0
+    );
+    auto serialized1 = tx1.serialize();
+    ASSERT_EQ(hex(serialized1), "120000220000000024000000026140000000017d784068400000000000000a81145ccb151f6e9d603f394ae778acf10d3bece874f68314e851bbbe79e328e43d68f43445368133df5fba5a");
+
+    auto tx2 = Transaction(
+       /* amount */200000,
+       /* fee */15,
+       /* flags */0,
+       /* sequence */144,
+       /* last_ledger_sequence */0,
+       /* account */Address("rGWTUVmm1fB5QUjMYn8KfnyrFNgDiD9H9e"),
+       /* destination */Address("rw71Qs1UYQrSQ9hSgRohqNNQcyjCCfffkQ"),
+       /* destination_tag*/0
+    );
+    auto serialized2 = tx2.serialize();
+    ASSERT_EQ(hex(serialized2), "12000022000000002400000090614000000000030d4068400000000000000f8114aa1bd19d9e87be8069fdbf6843653c43837c03c6831467fe6ec28e0464dd24fb2d62a492aac697cfad02");
+
+    auto tx3 = Transaction(
+       /* amount */25000000,
+       /* fee */12,
+       /* flags */0,
+       /* sequence */1,
+       /* last_ledger_sequence */0,
+       /* account */Address("r4BPgS7DHebQiU31xWELvZawwSG2fSPJ7C"),
+       /* destination */Address("rBqSFEFg2B6GBMobtxnU1eLA1zbNC9NDGM"),
+       /* destination_tag*/4146942154
+    );
+    auto serialized3 = tx3.serialize();
+    ASSERT_EQ(hex(serialized3), "120000220000000024000000012ef72d50ca6140000000017d784068400000000000000c8114e851bbbe79e328e43d68f43445368133df5fba5a831476dac5e814cd4aa74142c3ab45e69a900e637aa2");
+}
+
+TEST(RippleTransaction, preImage) {
+    auto account = Address("r9LqNeG6qHxjeUocjvVki2XR35weJ9mZgQ");
+    auto destination = Address("rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh");
+    auto tx1 = Transaction(
+        /* amount */1000,
+        /* fee */10,
+        /* flags */2147483648,
+        /* sequence */1,
+        /* last_ledger_sequence */0,
+        /* account */account,
+        /* destination */destination,
+        /* destination_tag*/0
+    );
+    tx1.pub_key = parse_hex("ed5f5ac8b98974a3ca843326d9b88cebd0560177b973ee0b149f782cfaa06dc66a");
+    auto unsignedTx = tx1.getPreImage();
+
+    ASSERT_EQ(hex(unsignedTx),
+          /* prefix */      "53545800"
+          /* tx type */     "120000"
+          /* flags */       "2280000000"
+          /* sequence */    "2400000001"
+          /* amount */      "6140000000000003e8"
+          /* fee */         "68400000000000000a"
+          /* pub key */     "7321ed5f5ac8b98974a3ca843326d9b88cebd0560177b973ee0b149f782cfaa06dc66a"
+          /* account */     "81145b812c9d57731e27a2da8b1830195f88ef32a3b6"
+          /* destination */ "8314b5f762798a53d543a014caf8b297cff8f2f937e8"
+    );
+    ASSERT_EQ(unsignedTx.size(), 114);
+}