fix base64 encoding bug

Sources/VaporJWT/Encodings/Base64Encoding.swift

@@ -1,18 +1,14 @@
 import Core
-import Foundation
 
 public struct Base64Encoding: Encoding {
 
     public init() {}
 
     public func encode(_ bytes: Bytes) throws -> String {
-        return bytes.base64String
+        return bytes.base64Encoded.string
     }
 
     public func decode(_ base64Encoded: String) throws -> Bytes {
-        guard let data = Data(base64Encoded: base64Encoded) else {
-            throw JWTError.decoding
-        }
-        return try data.makeBytes()
+        return base64Encoded.bytes.base64Decoded
     }
 }

Sources/VaporJWT/Encodings/Base64URLEncoding.swift

@@ -13,7 +13,7 @@ public struct Base64URLEncoding: Encoding {
     }
 
     public func encode(_ bytes: Bytes) throws -> String {
-        guard let base64URL = base64URLTranscoder.base64URLEncode( bytes.base64String) else {
+        guard let base64URL = base64URLTranscoder.base64URLEncode(bytes.base64Encoded.string) else {
             throw JWTError.encoding
         }
         return base64URL

Tests/VaporJWTTests/EncodingTests.swift

@@ -35,8 +35,8 @@ final class EncodingTests: XCTestCase {
         }
     }
 
-    func testBase64DecodeThrowsErrorForInvalidString() {
-        assert(try Base64Encoding().decode("\0"), throws: JWTError.decoding)
+    func testBase64DecodeIgnoresErrorForInvalidString() throws {
+        _ = try Base64Encoding().decode("\0")
     }
 
     func testBase64URLEncodeThrowsErrorForInvalidString() {
@@ -52,7 +52,7 @@ final class EncodingTests: XCTestCase {
     static let all = [
         ("testBase64ToBase64URL", testBase64ToBase64URL),
         ("testBase64URLToBase64", testBase64URLToBase64),
-        ("testBase64DecodeThrowsErrorForInvalidString", testBase64DecodeThrowsErrorForInvalidString),
+        ("testBase64DecodeIgnoresErrorForInvalidString", testBase64DecodeIgnoresErrorForInvalidString),
         ("testBase64URLEncodeThrowsErrorForInvalidString",
         testBase64URLEncodeThrowsErrorForInvalidString),
         ("testBase64URLDecodeThrowsErrorForInvalidString",