Re: What problem have this Rijndael(.NET&PHP) code?

Maybe this URL will help?  It's a working example and some tips 
forencryption/decryption between .net and php
http://programmin.prim8.net/archives/25-PHP-and-DotNet-encryption.html
Good luck!

Scott C. Sanchez, CISSP

On 12/14/06, 김영일 <zero12a@naver.com> wrote:> Dear, web security Professionals.>> I have a AES problem.>> I want to send confidential data.>> STEP is bottom...>>>> * STEP> 1. Encrypt confidential-data by C#.NET.>> 2. Send encrypted data on HTTP(80) protocol.>> 2. Decrypt encyrpted data by PHP &amp; mcrypt(2.4.x)>>>>> I want to decrypt data. but, Result data(decrypted data) 
don't same input data.>> What's problem?.  My code is a bottom.>>>>> ---------------------PHPinfo() &amp; Decrypt/Encrypt Function----------------------------------->> * PHPinfo() mcrypt> Version: &gt;=2.4.x> Supported ciphers : cast-128 gost rijndael-128 twofish arcfour cast-256 loki97 rijndael-192 saferplus wake blowfish-compat des rijndael-256 serpent xtea blowfish enigma rc2 tripledes> Supported modes : cbc cfb ctr ecb 
ncfb nofb ofb stream>>>> * C#.NET Encrypt function>> private string EncryptString(string InputText, string Password)> {>>  RijndaelManaged RijndaelCipher = new RijndaelManaged();>  RijndaelCipher.Mode = CipherMode.ECB;>>  byte[] PlainText = System.Text.Encoding.Unicode.GetBytes(InputText);>>  byte[] Salt = Encoding.ASCII.GetBytes(Password.Length.ToString());>  PasswordDeriveBytes SecretKey = new 
PasswordDeriveBytes(Password, Salt);>>   ICryptoTransform Encryptor = RijndaelCipher.CreateEncryptor(SecretKey.GetBytes(32), SecretKey.GetBytes(16));>  MemoryStream memoryStream = new MemoryStream();>  CryptoStream cryptoStream = new CryptoStream(memoryStream, Encryptor,  CryptoStreamMode.Write);>  cryptoStream.Write(PlainText, 0, PlainText.Length);>  cryptoStream.FlushFinalBlock();>  byte[] CipherBytes = memoryStream.ToArray();>  
memoryStream.Close();>  cryptoStream.Close();>>  string EncryptedData = Convert.ToBase64String(CipherBytes);>  return EncryptedData;> }>>>> * PHP(mcrypt) Decrypt function>> function decrypt($decrypt,$key) {>    $decoded = base64_decode($decrypt);>    $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB), strlen($key));>    $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $decoded, 
MCRYPT_MODE_ECB, $iv);>    return $decrypted;> }>>>>>> -------------------------------------------> Young-il Kim, CISA/CISSP/OCP> Korean, http://cafe.naver.com/WebHack>  zero12a@naver.com, zero12a@dreamwiz.com>>> ------------------------------------------------------------------------> 새로운 기부 문화의 씨앗, 해피빈>  
http://happybean.naver.com>