mirror of
https://github.com/ton-blockchain/ton
synced 2025-03-09 15:40:10 +00:00
138 lines
3.6 KiB
C++
138 lines
3.6 KiB
C++
/*
|
|
This file is part of TON Blockchain Library.
|
|
|
|
TON Blockchain Library is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation, either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
TON Blockchain Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
Copyright 2017-2019 Telegram Systems LLP
|
|
*/
|
|
#pragma once
|
|
|
|
#include "td/utils/common.h"
|
|
|
|
#if TD_HAVE_OPENSSL
|
|
|
|
#include "td/utils/Slice.h"
|
|
#include "td/utils/Status.h"
|
|
#include "td/utils/StringBuilder.h"
|
|
|
|
namespace td {
|
|
|
|
class BigNumContext {
|
|
public:
|
|
BigNumContext();
|
|
BigNumContext(const BigNumContext &other) = delete;
|
|
BigNumContext &operator=(const BigNumContext &other) = delete;
|
|
BigNumContext(BigNumContext &&other);
|
|
BigNumContext &operator=(BigNumContext &&other);
|
|
~BigNumContext();
|
|
|
|
private:
|
|
class Impl;
|
|
unique_ptr<Impl> impl_;
|
|
|
|
friend class BigNum;
|
|
};
|
|
|
|
class BigNum {
|
|
public:
|
|
BigNum();
|
|
BigNum(const BigNum &other);
|
|
BigNum &operator=(const BigNum &other);
|
|
BigNum(BigNum &&other);
|
|
BigNum &operator=(BigNum &&other);
|
|
~BigNum();
|
|
|
|
static BigNum from_binary(Slice str);
|
|
|
|
// Available only if OpenSSL >= 1.1.0
|
|
static BigNum from_le_binary(Slice str);
|
|
|
|
static Result<BigNum> from_decimal(CSlice str);
|
|
|
|
static Result<BigNum> from_hex(CSlice str);
|
|
|
|
static BigNum from_raw(void *openssl_big_num);
|
|
|
|
void set_value(uint32 new_value);
|
|
|
|
void ensure_const_time();
|
|
|
|
int get_num_bits() const;
|
|
|
|
int get_num_bytes() const;
|
|
|
|
void set_bit(int num);
|
|
|
|
void clear_bit(int num);
|
|
|
|
bool is_bit_set(int num) const;
|
|
|
|
bool is_prime(BigNumContext &context) const;
|
|
|
|
BigNum clone() const;
|
|
|
|
string to_binary(int exact_size = -1) const;
|
|
|
|
// Available only if OpenSSL >= 1.1.0
|
|
string to_le_binary(int exact_size = -1) const;
|
|
|
|
string to_decimal() const;
|
|
|
|
void operator+=(uint32 value);
|
|
|
|
void operator-=(uint32 value);
|
|
|
|
void operator*=(uint32 value);
|
|
|
|
void operator/=(uint32 value);
|
|
|
|
uint32 operator%(uint32 value) const;
|
|
|
|
static void random(BigNum &r, int bits, int top, int bottom);
|
|
|
|
static void add(BigNum &r, const BigNum &a, const BigNum &b);
|
|
|
|
static void sub(BigNum &r, const BigNum &a, const BigNum &b);
|
|
|
|
static void mul(BigNum &r, BigNum &a, BigNum &b, BigNumContext &context);
|
|
|
|
static void mod_add(BigNum &r, BigNum &a, BigNum &b, const BigNum &m, BigNumContext &context);
|
|
|
|
static void mod_sub(BigNum &r, BigNum &a, BigNum &b, const BigNum &m, BigNumContext &context);
|
|
|
|
static void mod_mul(BigNum &r, BigNum &a, BigNum &b, const BigNum &m, BigNumContext &context);
|
|
|
|
static void mod_inverse(BigNum &r, BigNum &a, const BigNum &m, BigNumContext &context);
|
|
|
|
static void div(BigNum *quotient, BigNum *remainder, const BigNum ÷nd, const BigNum &divisor,
|
|
BigNumContext &context);
|
|
|
|
static void mod_exp(BigNum &r, const BigNum &a, const BigNum &p, const BigNum &m, BigNumContext &context);
|
|
|
|
static void gcd(BigNum &r, BigNum &a, BigNum &b, BigNumContext &context);
|
|
|
|
static int compare(const BigNum &a, const BigNum &b);
|
|
|
|
private:
|
|
class Impl;
|
|
unique_ptr<Impl> impl_;
|
|
|
|
explicit BigNum(unique_ptr<Impl> &&impl);
|
|
};
|
|
|
|
StringBuilder &operator<<(StringBuilder &sb, const BigNum &bn);
|
|
|
|
} // namespace td
|
|
|
|
#endif
|