Samuel Azcona samuaz

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samuaz / ecrecover.cpp

Created September 2, 2022 02:08 — forked from CrackerHax/ecrecover.cpp

C++ ethereum ecRecover function using libsecp256k1 (with recovery module enabled) and keccak-tiny. Returns public eth address from signed message. Used to prove ownership of an eth address for logging in, etc.

	#include "keccak-tiny.h"
	#include "secp256k1.h"
	#include "secp256k1_recovery.h"

	std::string bytes_to_hex_string(const uint8_t *str, const uint64_t s)
	{
	std::ostringstream ret;

	for (size_t i = 0; i < s; ++i)
	ret << std::hex << std::setfill('0') << std::setw(2) << std::nouppercase << (int) str[i];