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cn_fast_hash.h
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1// Copyrights(c) 2017-2021, The Electroneum Project
2// Copyrights(c) 2014-2019, The Monero Project
3//
4// All rights reserved.
5//
6// Redistribution and use in source and binary forms, with or without modification, are
7// permitted provided that the following conditions are met:
8//
9// 1. Redistributions of source code must retain the above copyright notice, this list of
10// conditions and the following disclaimer.
11//
12// 2. Redistributions in binary form must reproduce the above copyright notice, this list
13// of conditions and the following disclaimer in the documentation and/or other
14// materials provided with the distribution.
15//
16// 3. Neither the name of the copyright holder nor the names of its contributors may be
17// used to endorse or promote products derived from this software without specific
18// prior written permission.
19//
20// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
21// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
22// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
23// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
28// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29//
30// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
31
32#pragma once
33
34#include "crypto/crypto.h"
36
37template<size_t bytes>
39{
40public:
41 static const size_t loop_count = bytes < 256 ? 100000 : bytes < 4096 ? 10000 : 1000;
42
43 bool init()
44 {
45 crypto::rand(bytes, m_data.data());
46 return true;
47 }
48
49 bool test()
50 {
51 crypto::hash hash;
52 crypto::cn_fast_hash(&m_data, bytes, hash);
53 return true;
54 }
55
56private:
57 std::array<uint8_t, bytes> m_data;
58};
static const size_t loop_count
std::enable_if< std::is_pod< T >::value, T >::type rand()
Definition crypto.h:216
void cn_fast_hash(const void *data, size_t length, char *hash)
POD_CLASS hash
Definition hash.h:50