tdesktop/Telegram/SourceFiles/mtproto/mtproto_dh_utils.h

36 lines
894 B
C
Raw Normal View History

2019-11-13 14:12:04 +00:00
/*
This file is part of Telegram Desktop,
the official desktop application for the Telegram messaging service.
For license and copyright information please follow this link:
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
*/
#pragma once
#include "base/bytes.h"
#include "base/openssl_help.h"
namespace MTP {
struct ModExpFirst {
static constexpr auto kRandomPowerSize = 256;
bytes::vector modexp;
bytes::vector randomPower;
};
[[nodiscard]] bool IsPrimeAndGood(bytes::const_span primeBytes, int g);
[[nodiscard]] bool IsGoodModExpFirst(
const openssl::BigNum &modexp,
const openssl::BigNum &prime);
[[nodiscard]] ModExpFirst CreateModExp(
int g,
bytes::const_span primeBytes,
bytes::const_span randomSeed);
[[nodiscard]] bytes::vector CreateAuthKey(
bytes::const_span firstBytes,
bytes::const_span randomBytes,
bytes::const_span primeBytes);
} // namespace MTP