JAVA AES加密 对应 C# AES加密

java代码：

public class AESCoder {
    private static String CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding";
    private static String KEY_ALGORITHM = "AES";

    public static String decrypt(String sSrc, String sKey) throws Exception {
        SecretKeySpec skeySpec = new SecretKeySpec(sKey.getBytes("ASCII"), KEY_ALGORITHM);
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        cipher.init(2, skeySpec);
        byte[] encrypted1 = hex2byte(sSrc);
        byte[] original = cipher.doFinal(encrypted1);
        return new String(original);
    }

    public static String encrypt(String sSrc, String sKey) throws Exception {
        SecretKeySpec skeySpec = new SecretKeySpec(sKey.getBytes("ASCII"), KEY_ALGORITHM);
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        cipher.init(1, skeySpec);
        byte[] encrypted = cipher.doFinal(sSrc.getBytes("UTF-8"));
        return byte2hex(encrypted);
    }

    private static byte[] hex2byte(String strhex) {
        if (strhex == null)
            return null;

        int l = strhex.length();
        if (l % 2 == 1)
            return null;

        byte[] b = new byte[l / 2];
        for (int i = 0; i != l / 2; ++i)
            b[i] = (byte) Integer.parseInt(strhex.substring(i * 2, i * 2 + 2), 16);

        return b;
    }

    private static String byte2hex(byte[] b) {
        String hs = "";
        String stmp = "";
        for (int n = 0; n < b.length; ++n) {
            stmp = Integer.toHexString(b[n] & 0xFF);
            if (stmp.length() == 1)
                hs = hs + "0" + stmp;
            else
                hs = hs + stmp;
        }

        return hs.toUpperCase();
    }

c#代码：

public class AESCoder
    {
        /// <summary>
        /// 获取Aes32位密钥
        /// </summary>
        /// <param name="key">Aes密钥字符串</param>
        /// <returns>Aes32位密钥</returns>
        static byte[] GetAesKey(string key)
        {
            if (string.IsNullOrEmpty(key))
            {
                throw new ArgumentNullException("key", "Aes密钥不能为空");
            }
            if (key.Length < 32)
            {
                // 不足32补全
                key = key.PadRight(32, '0');
            }
            if (key.Length > 32)
            {
                key = key.Substring(0, 32);
            }
            return Encoding.UTF8.GetBytes(key);
        }

        /// <summary>
        ///  16进制转2进制 Aes解密
        /// </summary>
        /// <param name="source">源字符串</param>
        /// <param name="key">aes密钥，长度必须32位</param>
        /// <returns>解密后的字符串</returns>
        public static string Decrypt(string source, string key)
        {
            using (AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider())
            {
                aesProvider.Key = GetAesKey(key);
                aesProvider.Mode = CipherMode.ECB;
                aesProvider.Padding = PaddingMode.PKCS7;
                using (ICryptoTransform cryptoTransform = aesProvider.CreateDecryptor())
                {
                    byte[] inputBuffers = AESCode.Hex_16To2(source);
                    byte[] results = cryptoTransform.TransformFinalBlock(inputBuffers, 0, inputBuffers.Length);
                    aesProvider.Clear();
                    return Encoding.UTF8.GetString(results);
                }
            }
        }

        /// <summary>
        /// Aes加密 2进制转16进制
        /// </summary>
        /// <param name="source">源字符串</param>
        /// <param name="key">aes密钥，长度必须32位</param>
        /// <returns>加密后的字符串</returns>
        public static String Encrypt(string source, string key)
        {
            using (AesCryptoServiceProvider aesProvider = new AesCryptoServiceProvider())
            {
                aesProvider.Key = GetAesKey(key);
                aesProvider.Mode = CipherMode.ECB;
                aesProvider.Padding = PaddingMode.PKCS7;
                using (ICryptoTransform cryptoTransform = aesProvider.CreateEncryptor())
                {
                    byte[] inputBuffers = Encoding.UTF8.GetBytes(source);
                    byte[] results = cryptoTransform.TransformFinalBlock(inputBuffers, 0, inputBuffers.Length);
                    aesProvider.Clear();
                    aesProvider.Dispose();
                    return AESCode.Hex_2To16(results);
                }
            }
        }

        /// <summary>
        /// 2进制转16进制
        /// </summary>
        public static String Hex_2To16(Byte[] bytes)
        {
            String hexString = String.Empty;
            Int32 iLength = 65535;
            if (bytes != null)
            {
                StringBuilder strB = new StringBuilder();
                if (bytes.Length < iLength)
                {
                    iLength = bytes.Length;
                }
                for (int i = 0; i < iLength; i++)
                {
                    strB.Append(bytes[i].ToString("X2"));
                }
                hexString = strB.ToString();
            }
            return hexString;
        }

        /// <summary>
        /// 16进制转2进制
        /// </summary>
        public static Byte[] Hex_16To2(String hexString)
        {
            if ((hexString.Length % 2) != 0)
            {
                hexString += " ";
            }
            Byte[] returnBytes = new Byte[hexString.Length / 2];
            for (Int32 i = 0; i < returnBytes.Length; i++)
            {
                returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
            }
            return returnBytes;
        }