예제 #1
0
 function rsa_sign($message, $private_key, $modulus, $keylength)
 {
     $padded = RSA::add_PKCS1_padding($message, false, $keylength / 8);
     $number = RSA::binary_to_number($padded);
     $signed = RSA::pow_mod($number, $private_key, $modulus);
     $result = RSA::number_to_binary($signed, $keylength / 8);
     return $result;
 }