From: Archana Thota <archanab25@...>
Date: 2008-12-15T17:42:12+09:00
Subject: Ruby encryption

I want to translate exactly the below php code into ruby for encryption.
echo up_getEncrypted('mypassword', 1);
function up_getEncrypted($password, $user_id)
    {
        srand();

        $td = mcrypt_module_open('rijndael-128', '', 'cbc', '');
        $keylen = mcrypt_enc_get_key_size($td);
        $key = substr($password, 0, $keylen);
        $key = str_pad($key, $keylen);
        $iv_size = mcrypt_enc_get_iv_size($td);
        $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
        if (mcrypt_generic_init($td, $key, $iv) != -1)
        {
            $pad = 16 - strlen($user_id);
            $mypadded = $user_id . str_repeat(chr($pad), $pad);
            $c_t = mcrypt_generic($td, pack('H*',
md5($user_id)).$user_id);
            mcrypt_generic_deinit($td);
            $result = base64_encode($iv.$c_t);
            return $result;
        }
        else
        {
              return "";
        }
    }

result = up_getEncrypted('mypassword', 1)
puts result
def up_getEncrypted(password, user_id)
         c = OpenSSL::Cipher::Cipher.new("aes-128-cbc")
        c.encrypt
        c.key = key =
Digest::SHA1.hexdigest(password).unpack('a2'*32).map{|x|
x.hex}.pack('c'*32)
        c.iv = c.random_iv
          e = c.update(user_id.to_s)
          e << c.final
        return e
end

Output of php encryption code and output of rails encryption code are
not same.Please any one can modify my rails code such that i will get
results from both php and rails.
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