C#AES加密

今天写个接口，要求如下，需要对应的AES加密(128位)，例子php的

C#实现

/// <summary>
        ///  AES 加密 输出hex格式
        /// </summary>
        /// <param name="str">明文（待加密）</param>
        /// <param name="key">密文</param>
        /// <returns></returns>
        public static string AesEncrypt(string str, string key)
        {
            if (string.IsNullOrEmpty(str)) return null;
            Byte[] toEncryptArray = Encoding.UTF8.GetBytes(str);

            System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged
            {
                Key = Encoding.UTF8.GetBytes(key),
                Mode = System.Security.Cryptography.CipherMode.ECB,
                Padding = System.Security.Cryptography.PaddingMode.Zeros //加密什么格式对应改为就行，基本的话应该为PKCS7
            };

            System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateEncryptor();
            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            //return Convert.ToBase64String(resultArray, 0, resultArray.Length);
            return ByteArrayToHexString(resultArray);
        }

    /// <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 * 3);
        foreach (byte b in data)
        {
            //16进制数字
            sb.Append(Convert.ToString(b, 16).PadLeft(2, ‘0‘));
            //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();
    }

     /// <summary>
        ///  AES 解密 输出hex格式
        /// </summary>
        /// <param name="str">明文（待解密）</param>
        /// <param name="key">密文</param>
        /// <returns></returns>
        public static string AesDecrypt(string str, string key)
        {
            if (string.IsNullOrEmpty(str)) return null;
            //Byte[] toEncryptArray = Convert.FromBase64String(str);
            byte[] toEncryptArray = HexStringToByteArray(str);

            System.Security.Cryptography.RijndaelManaged rm = new System.Security.Cryptography.RijndaelManaged
            {
                Key = Encoding.UTF8.GetBytes(key),
                Mode = System.Security.Cryptography.CipherMode.ECB,
                Padding = System.Security.Cryptography.PaddingMode.Zeros
            };

            System.Security.Cryptography.ICryptoTransform cTransform = rm.CreateDecryptor();
            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            return Encoding.UTF8.GetString(resultArray);
        }

    /// <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 / 2];
        for (int i = 0; i < s.Length; i += 2)
            buffer[i / 2] = (byte)Convert.ToByte(s.Substring(i, 2), 16);
        return buffer;
    }

输出为Base64将我注释的取消就行，这个是因为需求要的是hex格式

原文地址：https://www.cnblogs.com/Cein/p/8406428.html