/**
* @return string
* Ciphertext.
*/
public function encode()
{
$secret = AesHelper::createSecret();
$rsaCiphertext = self::getRsa($this->appPubKey, 'public')->encrypt($secret);
if (strlen($rsaCiphertext) !== Constants::RSA_MSG_BYTES) {
throw new InvalidMessageException("RSA ciphertext has incorrect length");
}
list($body, $signature) = AesHelper::encryptThenSign($secret, json_encode($this->data));
return self::NAME . Constants::PROTOCOL_DELIM . $this->appId . Constants::PROTOCOL_DELIM . base64_encode($rsaCiphertext) . Constants::PROTOCOL_DELIM . $signature . Constants::PROTOCOL_DELIM . $body;
}
/**
* @return string
* @throws InvalidMessageException
*/
public function encode()
{
list($body, $signature) = AesHelper::encryptThenSign($this->secret, json_encode($this->data));
return self::NAME . Constants::PROTOCOL_DELIM . $this->cxnId . Constants::PROTOCOL_DELIM . $signature . Constants::PROTOCOL_DELIM . $body;
}
