DES加密方法在PHP和.NET平台间的无缝连接

scaoping

作者：caocao（网络隐士），http://www.caocao.name/，http://www.caocao.mobi/
转载请注明来源：http://www.iteye.com/topic/178321
有个项目要跨PHP平台和.NET平台进行数据交换，数据还必须是DES加密的，在折腾了一阵后隐士终于摸清楚代码该如何写，加密数据才能够通用于两个平台。
PHP加密方式 写道

$key="********";
$iv="********";
$message="kjsdfuihyweflgjerogjreg";
echo base64_encode(mcrypt_encrypt(MCRYPT_DES, $key, $message, MCRYPT_MODE_CBC, $iv));


C#加密解密方式 写道


/// <summary>
/// DES加密方法，keyBytes和ivBytes必须为64bit即8位的
/// </summary>
/// <param name="inBytes">待加密数组</param>
/// <param name="keyBytes">key数组</param>
/// <param name="ivBytes">iv数组</param>
/// <returns>加密完的数组</returns>
public static byte[] DESEncryptWithCBCZeros(byte[] inBytes, byte[] keyBytes, byte[] ivBytes)
{
using (MemoryStream memoryStream = new MemoryStream())
{
DES desCBC = DES.Create();
desCBC.Mode = CipherMode.CBC;
desCBC.Padding = PaddingMode.Zeros;
using (CryptoStream cryptoStream = new CryptoStream(memoryStream, desCBC.CreateEncryptor(keyBytes, ivBytes), CryptoStreamMode.Write))
{
cryptoStream.Write(inBytes, 0, inBytes.Length);
cryptoStream.FlushFinalBlock();
byte[] bytes = memoryStream.ToArray();
return bytes;
}
}
}
/// <summary>
/// DES解密方法，keyBytes和ivBytes必须为64bit即8位的
/// </summary>
/// <param name="inBytes">待解密数组</param>
/// <param name="keyBytes">key数组</param>
/// <param name="ivBytes">iv数组</param>
/// <returns>解密完的数组</returns>
public static byte[] DESDecryptWithCBCZeros(byte[] inBytes, byte[] keyBytes, byte[] ivBytes)
{
using (MemoryStream memoryStream = new MemoryStream(inBytes))
{
DES desCBC = DES.Create();
desCBC.Mode = CipherMode.CBC;
desCBC.Padding = PaddingMode.Zeros;
using (CryptoStream cryptoStream = new CryptoStream(memoryStream, desCBC.CreateDecryptor(keyBytes, ivBytes), CryptoStreamMode.Read))
{
byte[] outEncrypt = new byte[inBytes.Length];
cryptoStream.Read(outEncrypt, 0, outEncrypt.Length);
return outEncrypt;
}
}
}



C#调用方式 写道


try
{
byte[] inBytes = Encoding.UTF8.GetBytes("kldfgwehfo23905hfkjvbsdcsdc");
byte[] keyBytes = Encoding.ASCII.GetBytes("********");
byte[] ivBytes = Encoding.ASCII.GetBytes("********");
byte[] outBytes = StringEncryptHelper.DESEncryptWithCBCZeros(inBytes, keyBytes, ivBytes);
Console.WriteLine(Convert.ToBase64String(outBytes));
Console.WriteLine(Encoding.UTF8.GetString(StringEncryptHelper.DESDecryptWithCBCZeros(outBytes, keyBytes, ivBytes)));
}
catch (CryptographicException e)
{
Console.WriteLine(e.StackTrace);
Console.WriteLine("A Cryptographic error occurred: {0}", e.Message);
}