oxen-core/src/crypto/hash-extra-jh.c

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// Copyright (c) 2014-2019, The Monero Project
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//
// 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
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#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include "jh.h"
#include "hash-ops.h"
Overhaul and fix crypto::{public_key,ec_point,etc.} types - Remove implicit `operator bool` from ec_point/public_key/etc. which was causing all sorts of implicit conversion mess and bugs. - Change ec_point/public_key/etc. to use a `std::array<unsigned char, 32>` (via a base type) rather than a C-array of char that has to be reinterpret_cast<>'ed all over the place. - Add methods to ec_point/public_key/etc. that make it work more like a container of bytes (`.data()`, `.size()`, `operator[]`, `begin()`, `end()`). - Make a generic `crypto::null<T>` that is a constexpr all-0 `T`, rather than the mishmash `crypto::null_hash`, crypto::null_pkey, crypto::hash::null(), and so on. - Replace three metric tons of `crypto::hash blahblah = crypto::null_hash;` with the much simpler `crypto::hash blahblah{};`, because there's no need to make a copy of a null hash in all these cases. (Likewise for a few other null_whatevers). - Remove a whole bunch of `if (blahblah == crypto::null_hash)` and `if (blahblah != crypto::null_hash)` with the more concise `if (!blahblah)` and `if (blahblah)` (which are fine via the newly *explicit* bool conversion operators). - `crypto::signature` becomes a 64-byte container (as above) but with `c()` and `r()` to get the c() and r() data pointers. (Previously `.c` and `.r` were `ec_scalar`s). - Delete with great prejudice CRYPTO_MAKE_COMPARABLE and CRYPTO_MAKE_HASHABLE and all the other utter trash in `crypto/generic-ops.h`. - De-inline functions in very common crypto/*.h files so that they don't have to get compiled 300 times. - Remove the disgusting include-a-C-header-inside-a-C++-namespace garbage from some crypto headers trying to be both a C and *different* C++ header at once. - Remove the toxic, disgusting, shameful `operator&` on ec_scalar, etc. that replace `&x` with `reinterpret_cast x into an unsigned char*`. This was pure toxic waste. - changed some `<<` outputs to fmt - Random other small changes encountered while fixing everything that cascaded out of the above changes.
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void hash_extra_jh(const void *data, size_t length, unsigned char *hash) {
int r = jh_hash(HASH_SIZE * 8, data, 8 * length, hash);
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assert(SUCCESS == r);
}