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1、3Des两种加密方式
//3DES的cbc加密[24位密钥对应192位加密] public static string TripleDesEncryptorCBC(string text, string key, string iv) { var tripleDESCipher = new TripleDESCryptoServiceProvider(); tripleDESCipher.Mode = CipherMode.CBC; tripleDESCipher.Padding = PaddingMode.PKCS7; byte[] pwdBytes = System.Text.Encoding.UTF8.GetBytes(key); byte[] keyBytes = new byte[24]; int len = pwdBytes.Length; if (len > keyBytes.Length) len = keyBytes.Length; System.Array.Copy(pwdBytes, keyBytes, len); tripleDESCipher.Key = keyBytes; tripleDESCipher.IV = Encoding.ASCII.GetBytes(iv); ICryptoTransform transform = tripleDESCipher.CreateEncryptor(); byte[] plainText = Encoding.UTF8.GetBytes(text); byte[] cipherBytes = transform.TransformFinalBlock(plainText, 0, plainText.Length); return Convert.ToBase64String(cipherBytes); } //3DES的cbc解密 public static string TripleDesDecryptorCBC(string text, string key, string iv) { var tripleDESCipher = new TripleDESCryptoServiceProvider(); tripleDESCipher.Mode = CipherMode.CBC; tripleDESCipher.Padding = PaddingMode.PKCS7; byte[] encryptedData = Convert.FromBase64String(text); byte[] pwdBytes = System.Text.Encoding.UTF8.GetBytes(key); byte[] keyBytes = new byte[24]; byte[] ivBytes = Encoding.ASCII.GetBytes(iv); int len = pwdBytes.Length; if (len > keyBytes.Length) len = keyBytes.Length; System.Array.Copy(pwdBytes, keyBytes, len); tripleDESCipher.Key = keyBytes; tripleDESCipher.IV = ivBytes; ICryptoTransform transform = tripleDESCipher.CreateDecryptor(); byte[] plainText = transform.TransformFinalBlock(encryptedData, 0, encryptedData.Length); return Encoding.UTF8.GetString(plainText); } //加密 public string DESEncrypt(string paymentCode, string key, string iv) { SymmetricAlgorithm symmetric; ICryptoTransform iCrypto; MemoryStream memory; CryptoStream crypto; byte[] byt; symmetric = new TripleDESCryptoServiceProvider(); symmetric.Key = Encoding.UTF8.GetBytes(key); symmetric.IV = Encoding.UTF8.GetBytes(iv); iCrypto = symmetric.CreateEncryptor(); byt = Encoding.UTF8.GetBytes(paymentCode); memory = new MemoryStream(); crypto = new CryptoStream(memory, iCrypto, CryptoStreamMode.Write); crypto.Write(byt, 0, byt.Length); crypto.FlushFinalBlock(); crypto.Close(); return Convert.ToBase64String(memory.ToArray()); } //解密 public static string DESDecrypst(string data, string key, string iv) { SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider(); mCSP.Key = Encoding.UTF8.GetBytes(key); mCSP.IV = Encoding.UTF8.GetBytes(iv); ICryptoTransform iCrypto; MemoryStream memory; CryptoStream crypto; byte[] byt; iCrypto = mCSP.CreateDecryptor(mCSP.Key, mCSP.IV); byt = Convert.FromBase64String(data); memory = new MemoryStream(); crypto = new CryptoStream(memory, iCrypto, CryptoStreamMode.Write); crypto.Write(byt, 0, byt.Length); crypto.FlushFinalBlock(); crypto.Close(); return Encoding.UTF8.GetString(memory.ToArray()); }
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