mirror of
https://git.wownero.com/wownero/wownero.git
synced 2024-12-28 00:28:52 +00:00
83 lines
3.0 KiB
C++
83 lines
3.0 KiB
C++
// Copyright (c) 2014, The Monero Project
|
|
//
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without modification, are
|
|
// permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice, this list of
|
|
// conditions and the following disclaimer.
|
|
//
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
|
// of conditions and the following disclaimer in the documentation and/or other
|
|
// materials provided with the distribution.
|
|
//
|
|
// 3. Neither the name of the copyright holder nor the names of its contributors may be
|
|
// used to endorse or promote products derived from this software without specific
|
|
// prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
|
|
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
|
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
|
|
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
//
|
|
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
|
|
|
|
#pragma once
|
|
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
|
|
#define CHACHA8_KEY_SIZE 32
|
|
#define CHACHA8_IV_SIZE 8
|
|
|
|
#if defined(__cplusplus)
|
|
#include <memory.h>
|
|
|
|
#include "hash.h"
|
|
|
|
namespace crypto {
|
|
extern "C" {
|
|
#endif
|
|
void chacha8(const void* data, size_t length, const uint8_t* key, const uint8_t* iv, char* cipher);
|
|
#if defined(__cplusplus)
|
|
}
|
|
|
|
#pragma pack(push, 1)
|
|
struct chacha8_key {
|
|
uint8_t data[CHACHA8_KEY_SIZE];
|
|
|
|
~chacha8_key()
|
|
{
|
|
memset(data, 0, sizeof(data));
|
|
}
|
|
};
|
|
|
|
// MS VC 2012 doesn't interpret `class chacha8_iv` as POD in spite of [9.0.10], so it is a struct
|
|
struct chacha8_iv {
|
|
uint8_t data[CHACHA8_IV_SIZE];
|
|
};
|
|
#pragma pack(pop)
|
|
|
|
static_assert(sizeof(chacha8_key) == CHACHA8_KEY_SIZE && sizeof(chacha8_iv) == CHACHA8_IV_SIZE, "Invalid structure size");
|
|
|
|
inline void chacha8(const void* data, std::size_t length, const chacha8_key& key, const chacha8_iv& iv, char* cipher) {
|
|
chacha8(data, length, reinterpret_cast<const uint8_t*>(&key), reinterpret_cast<const uint8_t*>(&iv), cipher);
|
|
}
|
|
|
|
inline void generate_chacha8_key(std::string password, chacha8_key& key) {
|
|
static_assert(sizeof(chacha8_key) <= sizeof(hash), "Size of hash must be at least that of chacha8_key");
|
|
char pwd_hash[HASH_SIZE];
|
|
crypto::cn_slow_hash(password.data(), password.size(), pwd_hash);
|
|
memcpy(&key, pwd_hash, sizeof(key));
|
|
memset(pwd_hash, 0, sizeof(pwd_hash));
|
|
}
|
|
}
|
|
|
|
#endif
|