Add encryptAes for js_engine (#645)

assets/init.js

@@ -190,6 +190,21 @@ let Convert = {
         });
     },
 
+    /**
+     * @param {ArrayBuffer} value
+     * @param {ArrayBuffer} key
+     * @returns {ArrayBuffer}
+     */
+    encryptAesEcb: (value, key) => {
+        return sendMessage({
+            method: "convert",
+            type: "aes-ecb",
+            value: value,
+            key: key,
+            isEncode: true
+        });
+    },
+
     /**
      * @param {ArrayBuffer} value
      * @param {ArrayBuffer} key
@@ -205,6 +220,23 @@ let Convert = {
         });
     },
 
+    /**
+     * @param {ArrayBuffer} value
+     * @param {ArrayBuffer} key
+     * @param {ArrayBuffer} iv
+     * @returns {ArrayBuffer}
+     */
+    encryptAesCbc: (value, key, iv) => {
+        return sendMessage({
+            method: "convert",
+            type: "aes-cbc",
+            value: value,
+            key: key,
+            iv: iv,
+            isEncode: true
+        });
+    },
+
     /**
      * @param {ArrayBuffer} value
      * @param {ArrayBuffer} key
@@ -225,20 +257,58 @@ let Convert = {
     /**
      * @param {ArrayBuffer} value
      * @param {ArrayBuffer} key
+     * @param {ArrayBuffer} iv
      * @param {number} blockSize
      * @returns {ArrayBuffer}
      */
-    decryptAesCfb: (value, key, blockSize) => {
+    encryptAesCfb: (value, key, iv, blockSize) => {
         return sendMessage({
             method: "convert",
             type: "aes-cfb",
             value: value,
             key: key,
+            iv: iv,
+            blockSize: blockSize,
+            isEncode: true
+        });
+    },
+
+    /**
+     * @param {ArrayBuffer} value
+     * @param {ArrayBuffer} key
+     * @param {ArrayBuffer} iv
+     * @param {number} blockSize
+     * @returns {ArrayBuffer}
+     */
+    decryptAesCfb: (value, key, iv, blockSize) => {
+        return sendMessage({
+            method: "convert",
+            type: "aes-cfb",
+            value: value,
+            key: key,
+            iv: iv,
             blockSize: blockSize,
             isEncode: false
         });
     },
 
+    /**
+     * @param {ArrayBuffer} value
+     * @param {ArrayBuffer} key
+     * @param {number} blockSize
+     * @returns {ArrayBuffer}
+     */
+    encryptAesOfb: (value, key, blockSize) => {
+        return sendMessage({
+            method: "convert",
+            type: "aes-ofb",
+            value: value,
+            key: key,
+            blockSize: blockSize,
+            isEncode: true
+        });
+    },
+
     /**
      * @param {ArrayBuffer} value
      * @param {ArrayBuffer} key

lib/foundation/js_engine.dart

@@ -436,11 +436,10 @@ mixin class _JSEngineApi {
             return Uint8List.fromList(hmac.convert(value).bytes);
           }
         case "aes-ecb":
-          if (!isEncode) {
           var key = data["key"];
           var cipher = ECBBlockCipher(AESEngine());
           cipher.init(
-              false,
+            isEncode,
             KeyParameter(key),
           );
           var offset = 0;
@@ -454,14 +453,11 @@ mixin class _JSEngineApi {
             );
           }
           return result;
-          }
-          return null;
         case "aes-cbc":
-          if (!isEncode) {
           var key = data["key"];
           var iv = data["iv"];
           var cipher = CBCBlockCipher(AESEngine());
-            cipher.init(false, ParametersWithIV(KeyParameter(key), iv));
+          cipher.init(isEncode, ParametersWithIV(KeyParameter(key), iv));
           var offset = 0;
           var result = Uint8List(value.length);
           while (offset < value.length) {
@@ -473,14 +469,12 @@ mixin class _JSEngineApi {
             );
           }
           return result;
-          }
-          return null;
         case "aes-cfb":
-          if (!isEncode) {
           var key = data["key"];
+          var iv = data["iv"];
           var blockSize = data["blockSize"];
           var cipher = CFBBlockCipher(AESEngine(), blockSize);
-            cipher.init(false, KeyParameter(key));
+          cipher.init(isEncode, ParametersWithIV(KeyParameter(key), iv));
           var offset = 0;
           var result = Uint8List(value.length);
           while (offset < value.length) {
@@ -492,14 +486,11 @@ mixin class _JSEngineApi {
             );
           }
           return result;
-          }
-          return null;
         case "aes-ofb":
-          if (!isEncode) {
           var key = data["key"];
           var blockSize = data["blockSize"];
           var cipher = OFBBlockCipher(AESEngine(), blockSize);
-            cipher.init(false, KeyParameter(key));
+          cipher.init(isEncode, KeyParameter(key));
           var offset = 0;
           var result = Uint8List(value.length);
           while (offset < value.length) {
@@ -511,8 +502,6 @@ mixin class _JSEngineApi {
             );
           }
           return result;
-          }
-          return null;
         case "rsa":
           if (!isEncode) {
             var key = data["key"];