$key_pair = new Crypt_RSA_KeyPair(256, MATH_LIBRARY, 'check_error');
// check encrypting/decrypting function's behaviour
$params = array('enc_key' => $key_pair->getPublicKey(), 'dec_key' => $key_pair->getPrivateKey());
$rsa_obj->setParams($params);
$text = '1234567890';
$enc_text = $rsa_obj->encrypt($text);
$text1 = $rsa_obj->decrypt($enc_text);
if ($text != $text1) {
$errors[] = "error in encrypting/decrypting functions";
}
// check signing/sign validating
$params = array('public_key' => $key_pair->getPublicKey(), 'private_key' => $key_pair->getPrivateKey());
$rsa_obj->setParams($params);
$text = '1234567890';
$sign = $rsa_obj->createSign($text);
if (!$rsa_obj->validateSign($text, $sign)) {
$errors[] = "error in signing/sign validating functions with default hash function";
}
// check signing/sign validating with specific hash function
$params = array('hash_func' => create_function('$text', 'return 0x1234;'));
$rsa_obj->setParams($params);
$text = '1234567890';
$sign = $rsa_obj->createSign($text);
if (!$rsa_obj->validateSign($text, $sign)) {
$errors[] = "error in signing/sign validating functions with user specific hash function";
}
///////////////////////////////////////////////
// generate key with user-defined random generator.
///////////////////////////////////////////////
// use mt_rand function ( http://php.net/mt_rand ) as random generator
$key_pair->setRandomGenerator('mt_rand');
