DotNet中用到的加密算法总结

public class CryptUtil
    {
        public static string DecryptString(string input)
        {
            if (input.Equals(string.Empty))
            {
                return input;
            }

            byte[] byKey = { 0x63, 0x68, 0x65, 0x6E, 0x79, 0x75, 0x61, 0x6E };
            byte[] IV = { 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10 };
            byte[] inputByteArray = new Byte[input.Length];
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            inputByteArray = Convert.FromBase64String(input);
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            Encoding encoding = new UTF8Encoding();
            return encoding.GetString(ms.ToArray());
        }

        public static string EncryptString(string input)
        {
            if (input.Equals(string.Empty))
            {
                return input;
            }

            byte[] byKey = { 0x63, 0x68, 0x65, 0x6E, 0x79, 0x75, 0x61, 0x6E };
            byte[] IV = { 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10 };
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            byte[] inputByteArray = Encoding.UTF8.GetBytes(input);
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            return Convert.ToBase64String(ms.ToArray());
        }
        /**/
        /// <summary>
        /// DES + Base64 加密
        /// </summary>
        /// <param name="input">明文字符串</param>
        /// <returns>已加密字符串</returns>
        public static string DesBase64Encrypt(string input)
        {
            System.Security.Cryptography.DES des = System.Security.Cryptography.DES.Create();
            des.Mode = System.Security.Cryptography.CipherMode.ECB;
            ICryptoTransform ct;
            MemoryStream ms;
            CryptoStream cs;
            byte[] byt;
            byte[] Key = new byte[8] { 56, 50, 55, 56, 56, 55, 49, 49 };
            byte[] IV = new byte[8] { 0, 0, 0, 0, 0, 0, 0, 0 };

ct = des.CreateEncryptor(Key, IV);

byt = Encoding.GetEncoding("GB2312").GetBytes(input); //根据 GB2312 编码对字符串处理，转换成 byte 数组

            ms = new MemoryStream();
            cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
            cs.Write(byt, 0, byt.Length);
            cs.FlushFinalBlock();

cs.Close();

            byte[] answer = ms.ToArray();
            for (int j = 0; j < answer.Length; j++)
            {
                Console.Write(answer[j].ToString() + " ");
            }
            Console.WriteLine();
            return Convert.ToBase64String(ms.ToArray()); // 将加密的 byte 数组依照 Base64 编码转换成字符串
        }

        /**/
        /// <summary>
        /// DES + Base64 解密
        /// </summary>
        /// <param name="input">密文字符串</param>
        /// <returns>解密字符串</returns>
        public static string DesBase64Decrypt(string input)
        {
            System.Security.Cryptography.DES des = System.Security.Cryptography.DES.Create();
            des.Mode = System.Security.Cryptography.CipherMode.ECB;
            ICryptoTransform ct;
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补充：综合编程 , 安全编程 ,