First commit

.gitmodules

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+[submodule "Carthage/Checkouts/KeychainAccess"]
+	path = Examples/Wallet/Carthage/Checkouts/KeychainAccess
+	url = https://github.com/kishikawakatsumi/KeychainAccess.git

BitcoinKit.podspec

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+Pod::Spec.new do |spec|
+  spec.name = 'BitcoinKit'
+  spec.version = '0.1.0'
+  spec.summary = 'Bitcoin protocol toolkit for Swift'
+  spec.description = <<-DESC
+                       BitcoinKit implements Bitcoin protocol in Swift. It is an implementation of the Bitcoin SPV protocol written (almost) entirely in swift.
+                       ```
+                    DESC
+  spec.homepage = 'https://github.com/kishikawakatsumi/BitcoinKit'
+  spec.license = { :type => 'Apache 2.0', :file => 'LICENSE' }
+  spec.author = { 'Kishikawa Katsumi' => 'kishikawakatsumi@mac.com' }
+  spec.social_media_url = 'https://twitter.com/k_katsumi'
+
+  spec.requires_arc = true
+  spec.source = { git: 'https://github.com/kishikawakatsumi/BitcoinKit.git', tag: "v#{spec.version}" }
+  spec.source_files = 'BitcoinKit/*.{h,swift}'
+
+  spec.pod_target_xcconfig = { 'SWIFT_WHOLE_MODULE_OPTIMIZATION' => 'YES',
+                               'APPLICATION_EXTENSION_API_ONLY' => 'YES' }
+
+  spec.ios.deployment_target = '8.0'
+
+  spec.preserve_paths = './setup'
+  spec.prepare_command = 'sh ./setup/build_libraries.sh'
+end

BitcoinKit.xcodeproj/xcshareddata/xcschemes/BitcoinKit.xcscheme

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+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+   LastUpgradeVersion = "0920"
+   version = "1.3">
+   <BuildAction
+      parallelizeBuildables = "YES"
+      buildImplicitDependencies = "YES">
+      <BuildActionEntries>
+         <BuildActionEntry
+            buildForTesting = "YES"
+            buildForRunning = "YES"
+            buildForProfiling = "YES"
+            buildForArchiving = "YES"
+            buildForAnalyzing = "YES">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "147494C6201F9A29006D1CF8"
+               BuildableName = "BitcoinKit.framework"
+               BlueprintName = "BitcoinKit"
+               ReferencedContainer = "container:BitcoinKit.xcodeproj">
+            </BuildableReference>
+         </BuildActionEntry>
+      </BuildActionEntries>
+   </BuildAction>
+   <TestAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
+      shouldUseLaunchSchemeArgsEnv = "YES">
+      <Testables>
+         <TestableReference
+            skipped = "NO">
+            <BuildableReference
+               BuildableIdentifier = "primary"
+               BlueprintIdentifier = "147494CF201F9A29006D1CF8"
+               BuildableName = "BitcoinKitTests.xctest"
+               BlueprintName = "BitcoinKitTests"
+               ReferencedContainer = "container:BitcoinKit.xcodeproj">
+            </BuildableReference>
+         </TestableReference>
+      </Testables>
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "147494C6201F9A29006D1CF8"
+            BuildableName = "BitcoinKit.framework"
+            BlueprintName = "BitcoinKit"
+            ReferencedContainer = "container:BitcoinKit.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </TestAction>
+   <LaunchAction
+      buildConfiguration = "Debug"
+      selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+      selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+      language = ""
+      launchStyle = "0"
+      useCustomWorkingDirectory = "NO"
+      ignoresPersistentStateOnLaunch = "NO"
+      debugDocumentVersioning = "YES"
+      debugServiceExtension = "internal"
+      allowLocationSimulation = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "147494C6201F9A29006D1CF8"
+            BuildableName = "BitcoinKit.framework"
+            BlueprintName = "BitcoinKit"
+            ReferencedContainer = "container:BitcoinKit.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+      <AdditionalOptions>
+      </AdditionalOptions>
+   </LaunchAction>
+   <ProfileAction
+      buildConfiguration = "Release"
+      shouldUseLaunchSchemeArgsEnv = "YES"
+      savedToolIdentifier = ""
+      useCustomWorkingDirectory = "NO"
+      debugDocumentVersioning = "YES">
+      <MacroExpansion>
+         <BuildableReference
+            BuildableIdentifier = "primary"
+            BlueprintIdentifier = "147494C6201F9A29006D1CF8"
+            BuildableName = "BitcoinKit.framework"
+            BlueprintName = "BitcoinKit"
+            ReferencedContainer = "container:BitcoinKit.xcodeproj">
+         </BuildableReference>
+      </MacroExpansion>
+   </ProfileAction>
+   <AnalyzeAction
+      buildConfiguration = "Debug">
+   </AnalyzeAction>
+   <ArchiveAction
+      buildConfiguration = "Release"
+      revealArchiveInOrganizer = "YES">
+   </ArchiveAction>
+</Scheme>

BitcoinKit/Address.swift

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+//
+//  Address.swift
+//  BitcoinKit
+//
+//  Created by Kishikawa Katsumi on 2018/01/31.
+//  Copyright © 2018 Kishikawa Katsumi. All rights reserved.
+//
+
+import Foundation
+
+/// A Bitcoin address looks like 1MsScoe2fTJoq4ZPdQgqyhgWeoNamYPevy and is derived from an elliptic curve public key
+/// plus a set of network parameters.
+/// A standard address is built by taking the RIPE-MD160 hash of the public key bytes, with a version prefix and a
+/// checksum suffix, then encoding it textually as base58. The version prefix is used to both denote the network for
+/// which the address is valid.
+public struct Address {
+    public typealias Base58Check = String
+
+    let network: Network
+
+    let publicKeyHash: Data
+    let base58: Base58Check
+
+    public init(_ publicKey: PublicKey) {
+        network = publicKey.network
+        publicKeyHash = Crypto.sha256ripemd160(publicKey.raw)
+        base58 = publicKey.toAddress()
+    }
+
+    public init(_ base58: Base58Check) throws {
+        self.base58 = base58
+
+        let raw = Base58.decode(base58)
+        let checksum = raw.suffix(4)
+        let pubKeyHash = raw.dropLast(4)
+        let checksumConfirm = Crypto.sha256sha256(pubKeyHash).prefix(4)
+        guard checksum == checksumConfirm else {
+            throw AddressError.invalid
+        }
+
+        let network: Network
+        let addressPrefix = pubKeyHash[0]
+        switch addressPrefix {
+        case Network.mainnet.pubkeyhash:
+            network = .mainnet
+        case Network.testnet.pubkeyhash:
+            network = .testnet
+        default:
+            throw AddressError.wrongNetwork
+        }
+        self.network = network
+
+        self.publicKeyHash = pubKeyHash.dropFirst()
+    }
+}
+
+extension Address : Equatable {
+    public static func ==(lhs: Address, rhs: Address) -> Bool {
+        return lhs.network == rhs.network && lhs.publicKeyHash == rhs.publicKeyHash
+    }
+}
+
+extension Address : CustomStringConvertible {
+    public var description: String {
+        return base58
+    }
+}
+
+public enum AddressError: Error {
+    case invalid
+    case wrongNetwork
+}

BitcoinKit/BitcoinKit.h

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+//
+//  BitcoinKit.h
+//  BitcoinKit
+//
+//  Created by Kishikawa Katsumi on 2018/01/30.
+//  Copyright © 2018 Kishikawa Katsumi. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+FOUNDATION_EXPORT double BitcoinKitVersionNumber;
+FOUNDATION_EXPORT const unsigned char BitcoinKitVersionString[];

BitcoinKit/BlockChain.swift

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+//
+//  BlockChain.swift
+//  BitcoinKit
+//
+//  Created by Kishikawa Katsumi on 2018/02/03.
+//  Copyright © 2018 Kishikawa Katsumi. All rights reserved.
+//
+
+import Foundation
+
+public class BlockChain {
+    let wallet: WalletProtocol
+    let blockStore: BlockStore
+
+    public init(wallet: WalletProtocol, blockStore: BlockStore) {
+        self.wallet = wallet
+        self.blockStore = blockStore
+    }
+
+    public func addBlock(_ block: BlockMessage, hash: Data) throws {
+        try blockStore.addBlock(block, hash: hash)
+    }
+
+    public func addMerkleBlock(_ merkleBlock: MerkleBlockMessage, hash: Data) throws {
+        try blockStore.addMerkleBlock(merkleBlock, hash: hash)
+    }
+
+    public func addTransaction(_ transaction: Transaction, hash: Data) throws {
+        try blockStore.addTransaction(transaction, hash: hash)
+    }
+
+    public func calculateBlance() throws -> Int64 {
+        return try blockStore.calculateBlance(address: Address(wallet.address))
+    }
+
+    public func latestBlockHash() -> Data {
+        var latestBlockHash: Data?
+        do {
+            latestBlockHash = try blockStore.latestBlockHash()
+        } catch {}
+        return latestBlockHash ?? wallet.network.checkpoints.last!.hash
+    }
+}