DotNet中用到的加密算法总结[转]
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public class CryptUtil
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{
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public static string DecryptString(string input)
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{
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if (input.Equals(string.Empty))
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{
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return input;
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}
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byte[] byKey = {0x63, 0x68, 0x65, 0x6E, 0x79, 0x75, 0x61, 0x6E};
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byte[] IV = {0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10};
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byte[] inputByteArray = new Byte[input.Length];
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DESCryptoServiceProvider des = new DESCryptoServiceProvider();
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inputByteArray = Convert.FromBase64String(input);
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MemoryStream ms = new MemoryStream();
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CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(byKey, IV), CryptoStreamMode.Write);
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cs.Write(inputByteArray, 0, inputByteArray.Length);
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cs.FlushFinalBlock();
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Encoding encoding = new UTF8Encoding();
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return encoding.GetString(ms.ToArray());
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}
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public static string EncryptString(string input)
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{
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if (input.Equals(string.Empty))
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{
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return input;
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}
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byte[] byKey = {0x63, 0x68, 0x65, 0x6E, 0x79, 0x75, 0x61, 0x6E};
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byte[] IV = {0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10};
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DESCryptoServiceProvider des = new DESCryptoServiceProvider();
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byte[] inputByteArray = Encoding.UTF8.GetBytes(input);
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MemoryStream ms = new MemoryStream();
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CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(byKey, IV), CryptoStreamMode.Write);
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cs.Write(inputByteArray, 0, inputByteArray.Length);
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cs.FlushFinalBlock();
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return Convert.ToBase64String(ms.ToArray());
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}
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/// <summary>
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/// DES + Base64 加密
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/// </summary>
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/// <param name="input">明文字符串</param>
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/// <returns>已加密字符串</returns>
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public static string DesBase64Encrypt(string input)
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{
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System.Security.Cryptography.DES des = System.Security.Cryptography.DES.Create();
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des.Mode = System.Security.Cryptography.CipherMode.ECB;
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ICryptoTransform ct;
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MemoryStream ms;
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CryptoStream cs;
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byte[] byt;
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byte[] Key = new byte[8]{56,50,55,56,56,55,49,49};
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byte[] IV = new byte[8]{0,0,0,0,0,0,0,0};
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ct = des.CreateEncryptor(Key, IV);
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byt = Encoding.GetEncoding("GB2312").GetBytes(input); //根据 GB2312 编码对字符串处理,转换成 byte 数组
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ms = new MemoryStream();
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cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
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cs.Write(byt, 0, byt.Length);
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cs.FlushFinalBlock();
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cs.Close();
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byte[] answer = ms.ToArray();
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for(int j=0;j<answer.Length;j++)
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{
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Console.Write(answer[j].ToString()+ " ");
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}
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Console.WriteLine();
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return Convert.ToBase64String(ms.ToArray()); // 将加密的 byte 数组依照 Base64 编码转换成字符串
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}
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/// <summary>
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/// DES + Base64 解密
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/// </summary>
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/// <param name="input">密文字符串</param>
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/// <returns>解密字符串</returns>
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public static string DesBase64Decrypt(string input)
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{
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System.Security.Cryptography.DES des = System.Security.Cryptography.DES.Create();
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des.Mode = System.Security.Cryptography.CipherMode.ECB;
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ICryptoTransform ct;
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MemoryStream ms;
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CryptoStream cs;
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byte[] byt;
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byte[] Key = new byte[8]{56,50,55,56,56,55,49,49};
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byte[] IV = new byte[8]{0,0,0,0,0,0,0,0};
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ct = des.CreateDecryptor(Key, IV);
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byt = Convert.FromBase64String(input); // 将 密文 以 Base64 编码转换成 byte 数组
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ms = new MemoryStream();
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cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
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cs.Write(byt, 0, byt.Length);
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cs.FlushFinalBlock();
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cs.Close();
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return Encoding.GetEncoding("GB2312").GetString(ms.ToArray()); // 将 明文 以 GB2312 编码转换成字符串
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}
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/// <summary>
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/// DES + Base64 加密
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/// </summary>
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/// <param name="input">明文字符串</param>
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/// <returns>已加密字符串</returns>
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public static string DesBase64EncryptForID5(string input)
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{
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System.Security.Cryptography.DES des = System.Security.Cryptography.DES.Create();
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des.Mode = System.Security.Cryptography.CipherMode.CBC;
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ICryptoTransform ct;
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MemoryStream ms;
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CryptoStream cs;
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byte[] byt;
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byte[] Key = new byte[8]{56,50,55,56,56,55,49,49};
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byte[] IV = new byte[8]{56,50,55,56,56,55,49,49};
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ct = des.CreateEncryptor(Key, IV);
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byt = Encoding.GetEncoding("GB2312").GetBytes(input); //根据 GB2312 编码对字符串处理,转换成 byte 数组
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ms = new MemoryStream();
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cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
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cs.Write(byt, 0, byt.Length);
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cs.FlushFinalBlock();
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cs.Close();
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byte[] answer = ms.ToArray();
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for(int j=0;j<answer.Length;j++)
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{
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Console.Write(answer[j].ToString()+ " ");
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}
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Console.WriteLine();
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return Convert.ToBase64String(ms.ToArray()); // 将加密的 byte 数组依照 Base64 编码转换成字符串
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}
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/// <summary>
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/// DES + Base64 解密
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/// </summary>
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/// <param name="input">密文字符串</param>
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/// <returns>解密字符串</returns>
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public static string DesBase64DecryptForID5(string input)
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{
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System.Security.Cryptography.DES des = System.Security.Cryptography.DES.Create();
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des.Mode = System.Security.Cryptography.CipherMode.CBC;
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ICryptoTransform ct;
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MemoryStream ms;
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CryptoStream cs;
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byte[] byt;
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byte[] Key = new byte[8]{56,50,55,56,56,55,49,49};
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byte[] IV = new byte[8]{56,50,55,56,56,55,49,49};
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ct = des.CreateDecryptor(Key, IV);
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byt = Convert.FromBase64String(input); // 将 密文 以 Base64 编码转换成 byte 数组
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ms = new MemoryStream();
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cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
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cs.Write(byt, 0, byt.Length);
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cs.FlushFinalBlock();
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cs.Close();
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return Encoding.GetEncoding("GB2312").GetString(ms.ToArray()); // 将 明文 以 GB2312 编码转换成字符串
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}
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/// <summary>
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/// 3DES 加密 Byte[] to HEX string
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/// </summary>
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/// <param name="input">明文字符串</param>
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/// <returns>已加密字符串</returns>
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public static string ThreeDesEncryptHEX(string input)
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{
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string result = "";
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System.Security.Cryptography.TripleDES des = System.Security.Cryptography.TripleDES.Create();
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des.Mode = System.Security.Cryptography.CipherMode.CBC;
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des.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
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ICryptoTransform ct;
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MemoryStream ms;
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CryptoStream cs;
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byte[] byt;
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byte[] Key = new byte[24]{
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1,2,3,4,5,6,
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1,2,3,4,5,6,
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1,2,3,4,5,6,
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1,2,3,4,5,6
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};
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byte[] IV = new byte[8]{1,2,3,4,5,6,1,2};
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ct = des.CreateEncryptor(Key, IV);
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byt = Encoding.GetEncoding("GB2312").GetBytes(input); //根据 GB2312 编码对字符串处理,转换成 byte 数组
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ms = new MemoryStream();
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cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
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cs.Write(byt, 0, byt.Length);
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cs.FlushFinalBlock();
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cs.Close();
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byte[] answer = ms.ToArray();
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for(int j=0;j<answer.Length;j++)
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{
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result += answer[j].ToString("x").PadLeft(2,'0');
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}
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return result;
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}
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/// <summary>
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/// 3DES + HEX to byte[] 解密
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/// </summary>
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/// <param name="input">密文字符串</param>
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/// <returns>解密字符串</returns>
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public static string ThreeDesDecryptHEX(string input)
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{
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System.Security.Cryptography.TripleDES des = System.Security.Cryptography.TripleDES.Create();
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des.Mode = System.Security.Cryptography.CipherMode.CBC;
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des.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
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ICryptoTransform ct;
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MemoryStream ms;
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CryptoStream cs;
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byte[] Key = new byte[24]{
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1,2,3,4,5,6,
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1,2,3,4,5,6,
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1,2,3,4,5,6,
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1,2,3,4,5,6
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};
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byte[] IV = new byte[8]{1,2,3,4,5,6,1,2};
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ct = des.CreateDecryptor(Key, IV);
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//byt = Convert.FromBase64String(input); // 将 密文 以 HEX to byte[]编码转换成 byte 数组
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if(input.Length<=1)
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{
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throw new Exception("encrypted HEX string is too short!");
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}
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byte[] byt = new byte[input.Length/2];
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for(int i=0;i<byt.Length;i++)
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{
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//Console.WriteLine(input.Substring(i*2,2));
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byt[i] = Convert.ToByte(input.Substring(i*2,2),16);
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}
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ms = new MemoryStream();
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cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
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cs.Write(byt, 0, byt.Length);
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cs.FlushFinalBlock();
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cs.Close();
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return Encoding.GetEncoding("GB2312").GetString(ms.ToArray()); // 将 明文 以 GB2312 编码转换成字符串
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}
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/// <summary>
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/// Base64解码
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/// </summary>
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/// <param name="base64Str"></param>
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/// <returns></returns>
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public static string DecodingFromBase64(string base64Str)
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{
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Byte[] bytes = Convert.FromBase64String(base64Str);
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return System.Text.Encoding.UTF8.GetString(bytes);
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}
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/// <summary>
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/// Base64编码
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/// </summary>
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/// <param name="str"></param>
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/// <returns></returns>
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public static string EncodingToBase64(string str)
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{
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return Convert.ToBase64String(Encoding.UTF8.GetBytes(str));
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}
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/// <summary>
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/// 根据指定的编码方式Base64解码
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/// </summary>
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/// <param name="base64Str"></param>
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/// <param name="strEncoding"></param>
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/// <returns></returns>
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public static string DecodingFromBase64(string base64Str,System.Text.Encoding strEncoding)
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{
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Byte[] bytes = Convert.FromBase64String(base64Str);
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return strEncoding.GetString(bytes);
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}
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/// <summary>
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/// 根据指定的编码方式Base64编码
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/// </summary>
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/// <param name="str"></param>
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/// <param name="strEncoding"></param>
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/// <returns></returns>
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public static string EncodingToBase64(string str,System.Text.Encoding strEncoding)
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{
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return Convert.ToBase64String(strEncoding.GetBytes(str));
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}
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}
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两个常用的方法
1
/// <summary>
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/// 通过字节数组形式的密钥获取字符串形式的密钥
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/// </summary>
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void GetStringByByteArray()
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{
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byte[] Key = new byte[8]{56,50,55,56,56,55,49,49};
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Response.Write(System.Text.Encoding.Default.GetString(Key));
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Response.End();
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}
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/// <summary>
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/// 通过字符串形式的密钥获取字节数组形式的密钥
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/// </summary>
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void GetByteArrayByString()
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{
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string key = "82788711";
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Response.Write(System.Text.Encoding.Default.GetBytes(key));
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Response.End();
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}
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有这里没包括的,欢迎回复,大家一起总结一下~~
本文来自博客园,作者:古道轻风,转载请注明原文链接:https://www.cnblogs.com/88223100/archive/2008/08/05/1260778.html
分类:
ASP.NET
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