monero/src/crypto/hash.h
moneromooo-monero a2d7a5fb49
encrypted payment ids are now 64 bit, instead of 256 bit
Pros:
 - smaller on the blockchain
 - shorter integrated addresses

Cons:
 - less sparseness
 - less ability to embed actual information

The boolean argument to encrypt payment ids is now gone from the
RPC calls, since the decision is made based on the length of the
payment id passed.
2015-08-09 10:13:51 +01:00

81 lines
2.8 KiB
C++

// Copyright (c) 2014-2015, 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 <stddef.h>
#include "common/pod-class.h"
#include "generic-ops.h"
namespace crypto {
extern "C" {
#include "hash-ops.h"
}
#pragma pack(push, 1)
POD_CLASS hash {
char data[HASH_SIZE];
};
POD_CLASS hash8 {
char data[8];
};
#pragma pack(pop)
static_assert(sizeof(hash) == HASH_SIZE, "Invalid structure size");
static_assert(sizeof(hash8) == 8, "Invalid structure size");
/*
Cryptonight hash functions
*/
inline void cn_fast_hash(const void *data, std::size_t length, hash &hash) {
cn_fast_hash(data, length, reinterpret_cast<char *>(&hash));
}
inline hash cn_fast_hash(const void *data, std::size_t length) {
hash h;
cn_fast_hash(data, length, reinterpret_cast<char *>(&h));
return h;
}
inline void cn_slow_hash(const void *data, std::size_t length, hash &hash) {
cn_slow_hash(data, length, reinterpret_cast<char *>(&hash));
}
inline void tree_hash(const hash *hashes, std::size_t count, hash &root_hash) {
tree_hash(reinterpret_cast<const char (*)[HASH_SIZE]>(hashes), count, reinterpret_cast<char *>(&root_hash));
}
}
CRYPTO_MAKE_HASHABLE(hash)
CRYPTO_MAKE_COMPARABLE(hash8)