CryptoJS与C#AES加解密互转

CryptoJS下载地址：

https://code.google.com/archive/p/crypto-js/downloads

http://download.****.net/detail/wz122889488/9851085

页面js引用：

    <script type="text/javascript" src="/content/plugin/CryptoJSv3.1.2/components/core-min.js"></script>
    <script type="text/javascript" src="/content/plugin/CryptoJSv3.1.2/rollups/aes.js"></script>

JS端AES加密解密：

     com.str = {
         _KEY: "12345678900000001234567890000000",//32位
         _IV: "1234567890000000",//16位
         /**************************************************************
         *字符串加密
         *   str：需要加密的字符串
         ****************************************************************/
         Encrypt: function (str) {
             var key = CryptoJS.enc.Utf8.parse(this._KEY);
             var iv = CryptoJS.enc.Utf8.parse(this._IV);

             var encrypted = '';

             var srcs = CryptoJS.enc.Utf8.parse(str);
             encrypted = CryptoJS.AES.encrypt(srcs, key, {
                 iv: iv,
                 mode: CryptoJS.mode.CBC,
                 padding: CryptoJS.pad.Pkcs7
             });

             return encrypted.ciphertext.toString();
         },

         /**************************************************************
         *字符串解密
         *   str：需要解密的字符串
         ****************************************************************/
         Decrypt: function (str) {
             var key = CryptoJS.enc.Utf8.parse(this._KEY);
             var iv = CryptoJS.enc.Utf8.parse(this._IV);
             var encryptedHexStr = CryptoJS.enc.Hex.parse(str);
             var srcs = CryptoJS.enc.Base64.stringify(encryptedHexStr);
             var decrypt = CryptoJS.AES.decrypt(srcs, key, {
                 iv: iv,
                 mode: CryptoJS.mode.CBC,
                 padding: CryptoJS.pad.Pkcs7
             });
             var decryptedStr = decrypt.toString(CryptoJS.enc.Utf8);
             return decryptedStr.toString();
         }
     }

C# AES加密解密：

const string AES_IV = "1234567890000000";//16位    

    /// <summary>
    /// AES加密算法
    /// </summary>
    /// <param name="input">明文字符串</param>
    /// <param name="key">密钥（32位）</param>
    /// <returns>字符串</returns>
    public static string EncryptByAES(string input, string key)
    {
        byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(, ));
        using (AesCryptoServiceProvider aesAlg = new AesCryptoServiceProvider())
        {
            aesAlg.Key = keyBytes;
            aesAlg.IV = Encoding.UTF8.GetBytes(AES_IV.Substring(, ));

            ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
            using (MemoryStream msEncrypt = new MemoryStream())
            {
                using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
                {
                    using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
                    {
                        swEncrypt.Write(input);
                    }
                    byte[] bytes = msEncrypt.ToArray();
                    return ByteArrayToHexString(bytes);
                }
            }
        }
    }

    /// <summary>
    /// AES解密
    /// </summary>
    /// <param name="input">密文字节数组</param>
    /// <param name="key">密钥（32位）</param>
    /// <returns>返回解密后的字符串</returns>
    public static string DecryptByAES(string input, string key)
    {
        byte[] inputBytes = HexStringToByteArray(input);
        byte[] keyBytes = Encoding.UTF8.GetBytes(key.Substring(, ));
        using (AesCryptoServiceProvider aesAlg = new AesCryptoServiceProvider())
        {
            aesAlg.Key = keyBytes;
            aesAlg.IV = Encoding.UTF8.GetBytes(AES_IV.Substring(, ));

            ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);
            using (MemoryStream msEncrypt = new MemoryStream(inputBytes))
            {
                using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, decryptor, CryptoStreamMode.Read))
                {
                    using (StreamReader srEncrypt = new StreamReader(csEncrypt))
                    {
                        return srEncrypt.ReadToEnd();
                    }
                }
            }
        }
    }

    /// <summary>
    /// 将指定的16进制字符串转换为byte数组
    /// </summary>
    /// <param name="s">16进制字符串(如：“7F 2C 4A”或“7F2C4A”都可以)</param>
    /// <returns>16进制字符串对应的byte数组</returns>
    public static byte[] HexStringToByteArray(string s)
    {
        s = s.Replace(" ", "");
        byte[] buffer = new byte[s.Length / ];
        for (int i = ; i < s.Length; i += )
            buffer[i / ] = (byte)Convert.ToByte(s.Substring(i, ), );
        return buffer;
    }

    /// <summary>
    /// 将一个byte数组转换成一个格式化的16进制字符串
    /// </summary>
    /// <param name="data">byte数组</param>
    /// <returns>格式化的16进制字符串</returns>
    public static string ByteArrayToHexString(byte[] data)
    {
        StringBuilder sb = new StringBuilder(data.Length * );
        foreach (byte b in data)
        {
            //16进制数字
            sb.Append(Convert.ToString(b, ).PadLeft(, ''));
            //16进制数字之间以空格隔开
            //sb.Append(Convert.ToString(b, 16).PadLeft(2, '0').PadRight(3, ' '));
        }
        return sb.ToString().ToUpper();
    }

用法：

com.str.Encrypt("2017-05")//结果：68f4a7903a9fe6085d2301ac68cc039c
com.str.Decrypt("68f4a7903a9fe6085d2301ac68cc039c")//结果：2017-05

//加密
string str1 = Encrypt.EncryptByAES("2017-05", "12345678900000001234567890000000");
//解密
string str2 = Encrypt.DecryptByAES("68f4a7903a9fe6085d2301ac68cc039c", "");

注：前后台的加密Key必须一致。