Php解密来自C#.NET RIJNDAEL 256的字符串

Question

固定它.

$data = base64_decode(str_replace(' ', '+', $_GET['data']));

无论出于何种原因,Php正在将GET变量中的+转换为空格

-

我试图解密在C#.NET中解密的字符串.

代码的结果各不相同,有几次最后的字符串解密了一些部分,其余部分是随机字符.

大多数时候"解密"字符串只是所有随机字符,我也尝试了一些Php函数来删除PKCS7填充,但没有一个修复了这个问题.

我在网站上看了几个类似的问题,但没有一个是有帮助的.

C#

// called as Response.Redirect(url + encryptParams(param));

private string encryptData(string data)
{
    Rijndael aes = Rijndael.Create();
    aes.KeySize = 256;
    aes.BlockSize = 256;
    aes.Mode = CipherMode.CBC;
    aes.Padding = PaddingMode.PKCS7;
    aes.Key = Convert.FromBase64String("b0dJN2c6cklVUX1qUGlFfGMweXRKbH5fSEMuXjAgfQo=");

    ICryptoTransform crypto = aes.CreateEncryptor(aes.Key, aes.IV);
    byte[] txt = ASCIIEncoding.UTF8.GetBytes(data);          
    byte[] cipherText = crypto.TransformFinalBlock(txt, 0, txt.Length);

    return "&data=" + Convert.ToBase64String(cipherText) + "&iv=" + Convert.ToBase64String(aes.IV);
}

PHP的:

   $data = base64_decode($_GET['data']);
   $iv = base64_decode($_GET['iv']);

   echo "<br /><b>IV</b>: " . $_GET['iv'] .
       "<br /><b>Encrypted String</b>: <br /><textarea>".$_GET['data']."</textarea>" .
       "<br /><b>key size:</b> " . mcrypt_get_key_size ( MCRYPT_RIJNDAEL_256,  MCRYPT_MODE_CBC) .
       "<br /><b>block size:</b> " . mcrypt_get_block_size ( MCRYPT_RIJNDAEL_256,  MCRYPT_MODE_CBC) .
       "<br /><b>cipher:</b> " . mcrypt_get_cipher_name ( MCRYPT_RIJNDAEL_256 ) .
       "<br /><b>iv size:</b> " .  mcrypt_get_iv_size  ( MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC) . "<br />"; 

   echo "Result: " . 
      mcrypt_decrypt
      (
          MCRYPT_RIJNDAEL_256,
          base64_decode("b0dJN2c6cklVUX1qUGlFfGMweXRKbH5fSEMuXjAgfQo="),
          $data,
          MCRYPT_MODE_CBC,
          $iv
       );

Php输出:

IV: WzsMlG39tfCGuX2EQM3vq8CoqGA xC0nW jICls8Cno =
key:b0dJN2c6cklVUX1qUGlFfGMweXRKbH5fSEMuXjAgfQo =

加密字符串: oLxa21fxfQGg0EJ5rwMjEzMblvcaTq0AInDAsD88wAkNeLqOdon0ukLjz49Hpp36KPTKcTGkj1f7EPYPAAbuADnr3Ff0zpptZkx2d22VRbHrMgj QLF9vDxQRT3er3UAXsAfKKTyW8qeSIgrzACFLX3yoro/bzWic rt7ED7y0jZ7a1Hci3GMz/4KhwaftarbV QQWStJlSOqdxAdmtRRe84Vi3085S6um51bNrh5QzGRH PcpucfqaTb3junfO9g67j2JUQaM/Tj1EGnv6oX3wATR/LuWyhnhrCH86u10I =

密钥大小: 32
块大小: 32
密码: Rijndael-256
iv大小: 32
结果: /ci ^/c g s c (

原始字符串(JSON): {"user":"jsmith","firstName":"John","lastName":"Smith","phone":"12223334444.5555","email":"john.smith@domain. com","地址":"123 Some Street","address2":"apt 456","city":"Some City","state":"LA","zip":"55555"}

Answer 1

使用以下代码修复它。

$data = base64_decode(str_replace(' ', '+', $_GET['data']));

无论出于何种原因，PHP 将 GET 变量中的 + 转换为空格。