/**
* @param CompactSignature $signature
* @return BufferInterface
*/
private function doSerialize(CompactSignature $signature)
{
$sig_t = '';
$recid = '';
if (!secp256k1_ecdsa_recoverable_signature_serialize_compact($this->ecAdapter->getContext(), $signature->getResource(), $sig_t, $recid)) {
throw new \RuntimeException('Secp256k1 serialize compact failure');
}
return new Buffer(chr((int) $signature->getFlags()) . $sig_t, 65, $this->ecAdapter->getMath());
}
/**
* @param BufferInterface $msg32
* @param CompactSignature $compactSig
* @return PublicKey
*/
private function doRecover(BufferInterface $msg32, CompactSignature $compactSig)
{
$publicKey = '';
/** @var resource $publicKey */
$context = $this->context;
$sig = $compactSig->getResource();
if (1 !== secp256k1_ecdsa_recover($context, $msg32->getBinary(), $sig, $publicKey)) {
throw new \RuntimeException('Unable to recover Public Key');
}
return new PublicKey($this, $publicKey, $compactSig->isCompressed());
}
