pubkey.cpp File Reference

#include <pubkey.h>
#include <hash.h>
#include <secp256k1.h>
#include <secp256k1_ellswift.h>
#include <secp256k1_extrakeys.h>
#include <secp256k1_recovery.h>
#include <secp256k1_schnorrsig.h>
#include <span.h>
#include <uint256.h>
#include <util/strencodings.h>
#include <algorithm>
#include <cassert>

Include dependency graph for pubkey.cpp:

Go to the source code of this file.

Functions
int	ecdsa_signature_parse_der_lax (secp256k1_ecdsa_signature *sig, const unsigned char *input, size_t inputlen)
	This function is taken from the libsecp256k1 distribution and implements DER parsing for ECDSA signatures, while supporting an arbitrary subset of format violations. More...

Variables
static const HashWriter	HASHER_TAPTWEAK {TaggedHash("TapTweak")}

Function Documentation

ecdsa_signature_parse_der_lax()

int ecdsa_signature_parse_der_lax	(	secp256k1_ecdsa_signature *	sig,
		const unsigned char *	input,
		size_t	inputlen
	)

This function is taken from the libsecp256k1 distribution and implements DER parsing for ECDSA signatures, while supporting an arbitrary subset of format violations.

Supported violations include negative integers, excessive padding, garbage at the end, and overly long length descriptors. This is safe to use in Bitcoin because since the activation of BIP66, signatures are verified to be strict DER before being passed to this module, and we know it supports all violations present in the blockchain before that point.

Definition at line 45 of file pubkey.cpp.

Here is the call graph for this function:

Here is the caller graph for this function:

Variable Documentation

HASHER_TAPTWEAK

const HashWriter HASHER_TAPTWEAK {TaggedHash("TapTweak")}

static

Definition at line 238 of file pubkey.cpp.