我現在用的充氣城堡,並在C#下面的代碼進行加密,並在C#中的數據進行解密加密和解密使用充氣城堡在C#和PHP
public static string BCEncrypt(string input)
{
string keyString = "mysecretkey12345";
string keyStringBase64 = Convert.ToBase64String(Encoding.UTF8.GetBytes(keyString));
byte[] inputBytes = Encoding.UTF8.GetBytes(input);
byte[] iv = new byte[16];
//Set up
AesEngine engine = new AesEngine();
CbcBlockCipher blockCipher = new CbcBlockCipher(engine); //CBC
PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(new CbcBlockCipher(engine), new Pkcs7Padding());
//PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(blockCipher); //Default scheme is PKCS5/PKCS7
KeyParameter keyParam = new KeyParameter(Convert.FromBase64String(keyStringBase64));
ParametersWithIV keyParamWithIV = new ParametersWithIV(keyParam, iv, 0, 16);
// Encrypt
cipher.Init(true, keyParamWithIV);
byte[] outputBytes = new byte[cipher.GetOutputSize(inputBytes.Length)];
int length = cipher.ProcessBytes(inputBytes, outputBytes, 0);
cipher.DoFinal(outputBytes, length); //Do the final block
return Convert.ToBase64String(outputBytes);
}
public static string BCDecrypt(string input)
{
string keyString = "mysecretkey12345";
string keyStringBase64 = Convert.ToBase64String(Encoding.UTF8.GetBytes(keyString));
byte[] inputBytes = Encoding.UTF8.GetBytes(input);
byte[] iv = new byte[16];
//Set up
AesEngine engine = new AesEngine();
CbcBlockCipher blockCipher = new CbcBlockCipher(engine); //CBC
PaddedBufferedBlockCipher cipher = new PaddedBufferedBlockCipher(blockCipher); //Default scheme is PKCS5/PKCS7
KeyParameter keyParam = new KeyParameter(Convert.FromBase64String(keyStringBase64));
ParametersWithIV keyParamWithIV = new ParametersWithIV(keyParam, iv, 0, 16);
//Decrypt
byte[] outputBytes = Convert.FromBase64String(input);
cipher.Init(false, keyParamWithIV);
byte[] comparisonBytes = new byte[cipher.GetOutputSize(outputBytes.Length)];
int length = cipher.ProcessBytes(outputBytes, comparisonBytes, 0);
cipher.DoFinal(comparisonBytes, length); //Do the final block
return System.Text.Encoding.UTF8.GetString(comparisonBytes, 0, comparisonBytes.Length);
}
這是我使用的代碼PHP代碼:
<?
function encrypt($input, $key) {
$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
$input = Security::pkcs5_pad($input, $size);
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
$iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
mcrypt_generic_init($td, $key, $iv);
$data = mcrypt_generic($td, $input);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
$data = base64_encode($data);
return $data;
}
function pkcs5_pad ($text, $blocksize) {
$pad = $blocksize - (strlen($text) % $blocksize);
return $text . str_repeat(chr($pad), $pad);
}
function decrypt($sStr, $sKey) {
$decrypted= mcrypt_decrypt(
MCRYPT_RIJNDAEL_128,
$sKey,
base64_decode($sStr),
MCRYPT_MODE_ECB
);
$dec_s = strlen($decrypted);
$padding = ord($decrypted[$dec_s-1]);
$decrypted = substr($decrypted, 0, -$padding);
return $decrypted;
}
echo "Input: " . $_REQUEST["inp"] . "<br>Decrypt: ". decrypt($_REQUEST["inp"], 'mysecretkey12345')."<br>";
?>
當我嘗試使用C#短的加密字符串,如「greatscott」我得到以下結果:dSk7z0F4JYsc0zhl95 + YMW ==
這然後使用PHP代碼解密確定。
然而,當我嘗試使用C#代碼,如「這是一個很長的字符串」更長的字符串加密,我得到以下結果:xcL4arrFD8Fie73evfHjvUjNEmZrA9h6SmO0ZRE82Hw =
而且這不會解密。如果我嘗試同樣的加密字符串「這是一個很長的字符串」通過PHP加密函數,我得到xcL4arrFD8Fie73evfHjva6yJyeUOrB8IudISDhQk24 =
所以加密字符串的前半部分是相同的,但下半年是沒有的。這讓我認爲我得到了填充不正確的東西。
任何意見,將不勝感激。
謝謝
在PHP中使用openssl進行加密和解密。 –
您在PHP代碼中使用ECB模式,在C#代碼中使用CBC模式。此外,您正在C#加密函數中使用全零IV,但在PHP代碼中使用了隨機IV。您也不會在任一代碼中發送IV。你在這裏有很多錯誤。 –
使用CTR模式。忘記你聽說過任何其他模式。 – Ben