PHP和.NET关于3DES加密兼容问题
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悬赏园豆：60
[待解决问题]
下面是我的C#加解密代码：
class DES
{
//密钥
private const string sKey = "nuhyrn83Y9LNeygnpq7AMN0aeRQN7kuv";
//矢量，矢量可以为空
private const string sIV = "qciO6X+aPLw=";
/// <summary>
/// 加密
/// </summary>
/// <param name="Value">明文</param>
/// <returns>密文 base64转码</returns>
public static string EncryptString(string Value)
{
SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
ICryptoTransform ct;
MemoryStream ms;
CryptoStream cs;
byte[] byt;
mCSP.Key = Convert.FromBase64String(sKey);
mCSP.IV = Convert.FromBase64String(sIV);
Console.WriteLine("Key:" + mCSP.Key.ToString() + ",IV:" + mCSP.IV.ToString());
//指定加密的运算模式
mCSP.Mode = System.Security.Cryptography.CipherMode.ECB;
//获取或设置加密算法的填充模式
mCSP.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
ct = mCSP.CreateEncryptor(mCSP.Key, mCSP.IV);
byt = Encoding.UTF8.GetBytes(Value);
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
cs.Write(byt, 0, byt.Length);
cs.FlushFinalBlock();
cs.Close();
return Convert.ToBase64String(ms.ToArray());
}
/// <summary>
/// 解密
/// </summary>
/// <param name="Value">base64转码密文</param>
/// <returns>明文</returns>
public static string DecryptString(string Value)
{
SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
ICryptoTransform ct;
MemoryStream ms;
CryptoStream cs;
byte[] byt;
mCSP.Key = Convert.FromBase64String(sKey);
mCSP.IV = Convert.FromBase64String(sIV);
mCSP.Mode = System.Security.Cryptography.CipherMode.ECB;
mCSP.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
ct = mCSP.CreateDecryptor(mCSP.Key, mCSP.IV);
byt = Convert.FromBase64String(Value);
ms = new MemoryStream();
cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
cs.Write(byt, 0, byt.Length);
cs.FlushFinalBlock();
cs.Close();
return Encoding.UTF8.GetString(ms.ToArray());
}
}
下面是我的PHP加解密代码：
class DesCrypt {
/**
* 使用3DES加密源数据
* @param string $oriSource 源数据
* @param string $key 密钥
* @param string $defaultIV 加解密向量
* @return string $result 密文
*/
public function encryptByTDES($oriSource, $key, $defaultIV) {
$key = base64_decode ( $key ); //结果为24位
$iv = base64_decode ( $defaultIV ); //结果为8位
$oriSource = $this->addPKCS7Padding ( $oriSource );
$td = mcrypt_module_open ( MCRYPT_3DES, '', MCRYPT_MODE_CBC, '' );
mcrypt_generic_init ( $td, $key, $iv );
$result = mcrypt_generic ( $td, $oriSource );
mcrypt_generic_deinit ( $td );
mcrypt_module_close ( $td );
$result = base64_encode ( $result );
return $result;
}
/**
* 使用3DES解密密文
* @param string $encryptedData 密文
* @param string $key 密钥
* @param string $defaultIV 加解密向量
* @return string $result 解密后的原文
*/
public function decryptByTDES($encryptedData, $key, $defaultIV) {
$key = base64_decode ( $key ); //结果为24位
$iv = base64_decode ( $defaultIV ); //结果为8位
$encryptedData = base64_decode ( $encryptedData );
$td = mcrypt_module_open ( MCRYPT_3DES, '', MCRYPT_MODE_CBC, '' );
mcrypt_generic_init ( $td, $key, $iv );
$result = mdecrypt_generic ( $td, $encryptedData );
mcrypt_generic_deinit ( $td );
mcrypt_module_close ( $td );
$result = $this->stripPKSC7Padding ( $result );
return $result;
}
/**
* 为字符串添加PKCS7 Padding
* @param string $source 源字符串
*/
private function addPKCS7Padding($source) {
$block = mcrypt_get_block_size ( 'tripledes', 'cbc' );
$pad = $block - (strlen ( $source ) % $block);
if ($pad <= $block) {
$char = chr ( $pad );
$source .= str_repeat ( $char, $pad );
}
return $source;
}
/**
* 去除字符串末尾的PKCS7 Padding
* @param string $source 带有padding字符的字符串
*/
public function stripPKSC7Padding($source) {
$block = mcrypt_get_block_size ( 'tripledes', 'cbc' );
$char = substr ( $source, - 1, 1 );
$num = ord ( $char );
if ($num > 8) {
return $source;
}
$len = strlen ( $source );
for($i = $len - 1; $i >= $len - $num; $i --) {
if (ord ( substr ( $source, $i, 1 ) ) != $num) {
return $source;
}
}
$source = substr ( $source, 0, - $num );
return $source;
}
}
这两部分代码的加密结果不同，无法兼容，请问是什么问题啊？
所有回答(1)
0
mCSP.Mode = System.Security.Cryptography.CipherMode.ECB;
$td = mcrypt_module_open ( MCRYPT_3DES, '', MCRYPT_MODE_CBC, '' );
请问这有什么问题吗？