你有几种.net 加密算法

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; 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.CreateDecryptor(Key, IV); byt = Convert.FromBase64String(input); // 将 密文 以 Base64 编码转换成 byte 数组 ms = new MemoryStream(); cs = new CryptoStream(ms, ct, CryptoStreamMode.Write); cs.Write(byt, 0, byt.Length); cs.FlushFinalBlock(); cs.Close(); return Encoding.GetEncoding("GB2312").GetString(ms.ToArray()); // 将 明文 以 GB2312 编码转换成字符串 } /**//// <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 DesBase64EncryptForID5(string input) { System.Security.Cryptography.DES des = System.Security.Cryptography.DES.Create(); des.Mode = System.Security.Cryptography.CipherMode.CBC; 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]{56,50,55,56,56,55,49,49}; 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 DesBase64DecryptForID5(string input) { System.Security.Cryptography.DES des = System.Security.Cryptography.DES.Create(); des.Mode = System.Security.Cryptography.CipherMode.CBC; 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]{56,50,55,56,56,55,49,49}; ct = des.CreateDecryptor(Key, IV); byt = Convert.FromBase64String(input); // 将 密文 以 Base64 编码转换成 byte 数组 ms = new MemoryStream(); cs = new CryptoStream(ms, ct, CryptoStreamMode.Write); cs.Write(byt, 0, byt.Length); cs.FlushFinalBlock(); cs.Close(); return Encoding.GetEncoding("GB2312").GetString(ms.ToArray()); // 将 明文 以 GB2312 编码转换成字符串 } /**//// <summary> /// 3DES 加密 Byte[] to HEX string /// </summary> /// <param name="input">明文字符串</param> /// <returns>已加密字符串</returns> public static string ThreeDesEncryptHEX(string input) { string result = ""; System.Security.Cryptography.TripleDES des = System.Security.Cryptography.TripleDES.Create(); des.Mode = System.Security.Cryptography.CipherMode.CBC; des.Padding = System.Security.Cryptography.PaddingMode.PKCS7; ICryptoTransform ct; MemoryStream ms; CryptoStream cs; byte[] byt; byte[] Key = new byte[24]{ 1,2,3,4,5,6, 1,2,3,4,5,6, 1,2,3,4,5,6, 1,2,3,4,5,6 }; byte[] IV = new byte[8]{1,2,3,4,5,6,1,2}; 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++) { result += answer[j].ToString("x").PadLeft(2,'0'); } return result; } /**//// <summary> /// 3DES + HEX to byte[] 解密 /// </summary> /// <param name="input">密文字符串</param> /// <returns>解密字符串</returns> public static string ThreeDesDecryptHEX(string input) { System.Security.Cryptography.TripleDES des = System.Security.Cryptography.TripleDES.Create(); des.Mode = System.Security.Cryptography.CipherMode.CBC; des.Padding = System.Security.Cryptography.PaddingMode.PKCS7; ICryptoTransform ct; MemoryStream ms; CryptoStream cs; byte[] Key = new byte[24]{ 1,2,3,4,5,6, 1,2,3,4,5,6, 1,2,3,4,5,6, 1,2,3,4,5,6 }; byte[] IV = new byte[8]{1,2,3,4,5,6,1,2}; ct = des.CreateDecryptor(Key, IV); //byt = Convert.FromBase64String(input); // 将 密文 以 HEX to byte[]编码转换成 byte 数组 if(input.Length<=1) { throw new Exception("encrypted HEX string is too short!"); } byte[] byt = new byte[input.Length/2]; for(int i=0;i<byt.Length;i++) { //Console.WriteLine(input.Substring(i*2,2)); byt[i] = Convert.ToByte(input.Substring(i*2,2),16); } ms = new MemoryStream(); cs = new CryptoStream(ms, ct, CryptoStreamMode.Write); cs.Write(byt, 0, byt.Length); cs.FlushFinalBlock(); cs.Close(); return Encoding.GetEncoding("GB2312").GetString(ms.ToArray()); // 将 明文 以 GB2312 编码转换成字符串 } /**//// <summary> /// Base64解码 /// </summary> /// <param name="base64Str"></param> /// <returns></returns> public static string DecodingFromBase64(string base64Str) { Byte[] bytes = Convert.FromBase64String(base64Str); return System.Text.Encoding.UTF8.GetString(bytes); } /**//// <summary> /// Base64编码 /// </summary> /// <param name="str"></param> /// <returns></returns> public static string EncodingToBase64(string str) { return Convert.ToBase64String(Encoding.UTF8.GetBytes(str)); } /**//// <summary> /// 根据指定的编码方式Base64解码 /// </summary> /// <param name="base64Str"></param> /// <param name="strEncoding"></param> /// <returns></returns> public static string DecodingFromBase64(string base64Str,System.Text.Encoding strEncoding) { Byte[] bytes = Convert.FromBase64String(base64Str); return strEncoding.GetString(bytes); } /**//// <summary> /// 根据指定的编码方式Base64编码 /// </summary> /// <param name="str"></param> /// <param name="strEncoding"></param> /// <returns></returns> public static string EncodingToBase64(string str,System.Text.Encoding strEncoding) { return Convert.ToBase64String(strEncoding.GetBytes(str)); } } 两个常用的方法 /**//// <summary> /// 通过字节数组形式的密钥获取字符串形式的密钥 /// </summary> void GetStringByByteArray() { byte[] Key = new byte[8]{56,50,55,56,56,55,49,49}; Response.Write(System.Text.Encoding.Default.GetString(Key)); Response.End(); } /**//// <summary> /// 通过字符串形式的密钥获取字节数组形式的密钥 /// </summary> void GetByteArrayByString() { string key = "82788711"; Response.Write(System.Text.Encoding.Default.GetBytes(key)); Response.End(); }