Differential D2377 Diff 6801 src/script/sigencoding.h

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src/script/sigencoding.h

	// Copyright (c) 2009-2010 Satoshi Nakamoto			// Copyright (c) 2009-2010 Satoshi Nakamoto
	// Copyright (c) 2009-2016 The Bitcoin Core developers			// Copyright (c) 2009-2016 The Bitcoin Core developers
	// Copyright (c) 2017-2018 The Bitcoin developers			// Copyright (c) 2017-2018 The Bitcoin developers
	// Distributed under the MIT software license, see the accompanying			// Distributed under the MIT software license, see the accompanying
	// file COPYING or http://www.opensource.org/licenses/mit-license.php.			// file COPYING or http://www.opensource.org/licenses/mit-license.php.

	#ifndef BITCOIN_SCRIPT_SIGENCODING_H			#ifndef BITCOIN_SCRIPT_SIGENCODING_H
	#define BITCOIN_SCRIPT_SIGENCODING_H			#define BITCOIN_SCRIPT_SIGENCODING_H

	#include "script_error.h"			#include "script_error.h"
				#include "script_flags.h"
	#include "sighashtype.h"			#include "sighashtype.h"

	#include <cstdint>			#include <cstdint>
	#include <vector>			#include <vector>

	typedef std::vector<uint8_t> valtype;			typedef std::vector<uint8_t> valtype;

	namespace {			namespace {

	inline SigHashType GetHashType(const valtype &vchSig) {			inline SigHashType GetHashType(const valtype &vchSig) {
	if (vchSig.size() == 0) {			if (vchSig.size() == 0) {
	return SigHashType(0);			return SigHashType(0);
	}			}

	return SigHashType(vchSig[vchSig.size() - 1]);			return SigHashType(vchSig[vchSig.size() - 1]);
	}			}

	} // namespace			} // namespace

				/*
				* Test whether a given signature (without its hashtype byte) should be
				* classified as a Schnorr signature.
				*/
				inline bool IsSchnorrSignature(const valtype &vchSig, uint32_t flags) {
				return (flags & SCRIPT_ENABLE_SCHNORR) && (vchSig.size() == 64);
				}

	/**			/**
	* Check that the signature provided on some data is properly encoded.			* Check that the signature provided on some data is properly encoded.
	* Signatures passed to OP_CHECKDATASIG and its verify variant must be checked			* Signatures passed to OP_CHECKDATASIG and its verify variant must be checked
	* using this function.			* using this function.
	*/			*/
	bool CheckDataSignatureEncoding(const valtype &vchSig, uint32_t flags,			bool CheckDataSignatureEncoding(const valtype &vchSig, uint32_t flags,
	ScriptError *serror);			ScriptError *serror);

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