/**
* @param TransactionSignature $txSig
* @return \BitWasp\Buffertools\Buffer
*/
public function serialize(TransactionSignature $txSig)
{
$sig = $this->sigSerializer->serialize($txSig->getSignature());
$parser = new Parser($sig->getHex());
$parser->writeBytes(1, Buffer::int($txSig->getHashType(), 1));
$buffer = $parser->getBuffer();
return $buffer;
}
/**
* @param \BitWasp\Bitcoin\Signature\TransactionSignature $txSig
* @return \BitWasp\Buffertools\Buffer
*/
public function serialize(\BitWasp\Bitcoin\Signature\TransactionSignature $txSig)
{
$sig = $this->sigSerializer->serialize($txSig->getSignature());
$parser = new Parser($sig->getHex());
$parser->writeInt(1, $txSig->getHashType());
$buffer = $parser->getBuffer();
return $buffer;
}
/**
* @param BufferInterface $signature
* @return bool
*/
public function isValidSignatureEncoding(BufferInterface $signature)
{
try {
TransactionSignature::isDERSignature($signature);
return true;
} catch (SignatureNotCanonical $e) {
/* In any case, we will return false outside this block */
}
return false;
}
/**
* @param \BitWasp\Bitcoin\Signature\TransactionSignature $signature
* @param PublicKeyInterface $publicKey
* @return Script
*/
public function payToPubKeyHash(TransactionSignature $signature, PublicKeyInterface $publicKey)
{
return ScriptFactory::create()->push($signature->getBuffer())->push($publicKey->getBuffer());
}
/**
* @param Peer $sender
* @param TransactionSignatureInterface $txSig
* @return TransactionSignatureInterface
*/
public function fixSig(Peer $sender, TransactionSignatureInterface $txSig, &$wasMalleated = false)
{
$sig = $txSig->getSignature();
if (!$this->adapter->validateSignatureElement($sig->getS(), true)) {
$ip = $sender->getRemoteAddr()->getIp();
if (!isset($this->violators[$ip])) {
$this->violators[$sender->getRemoteAddr()->getIp()] = 1;
} else {
$this->violators[$sender->getRemoteAddr()->getIp()]++;
}
$wasMalleated = true;
$this->counter++;
$txSig = new TransactionSignature($this->adapter, new Signature($this->adapter, $sig->getR(), $this->math->sub($this->order, $sig->getS())), $txSig->getHashType());
if (!$this->adapter->validateSignatureElement($txSig->getSignature()->getS(), true)) {
die('failed to produce a low-s signature');
}
}
return $txSig;
}
/**
* @param Buffer $signature
* @return bool
*/
public function isValidSignatureEncoding(Buffer $signature)
{
try {
\BitWasp\Bitcoin\Signature\TransactionSignature::isDERSignature($signature);
return true;
} catch (SignatureNotCanonical $e) {
return false;
}
}
