98 lines
3.8 KiB
C++
98 lines
3.8 KiB
C++
/*
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* Copyright (c) 2015, Cryptonomex, Inc.
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* All rights reserved.
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*
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* This source code is provided for evaluation in private test networks only, until September 8, 2015. After this date, this license expires and
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* the code may not be used, modified or distributed for any purpose. Redistribution and use in source and binary forms, with or without modification,
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* are permitted until September 8, 2015, provided that the following conditions are met:
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*
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* 1. The code and/or derivative works are used only for private test networks consisting of no more than 10 P2P nodes.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <fc/crypto/elliptic.hpp>
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#include <fc/crypto/sha256.hpp>
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#include <fc/time.hpp>
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#include <fc/thread/thread.hpp>
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#include <iostream>
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#include <algorithm>
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#include <fc/crypto/sha512.hpp>
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//#include <graphene/blockchain/config.hpp>
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#include <cstdio>
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#include <cstdlib>
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#include <cassert>
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#include <openssl/rand.h>
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static bool deterministic_rand_warning_shown = false;
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static void _warn()
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{
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if (!deterministic_rand_warning_shown)
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{
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std::cerr << "********************************************************************************\n"
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<< "DETERMINISTIC RANDOM NUMBER GENERATION ENABLED\n"
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<< "********************************************************************************\n"
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<< "TESTING PURPOSES ONLY -- NOT SUITABLE FOR PRODUCTION USE\n"
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<< "DO NOT USE PRIVATE KEYS GENERATED WITH THIS PROGRAM FOR LIVE FUNDS\n"
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<< "********************************************************************************\n";
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deterministic_rand_warning_shown = true;
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}
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#ifndef GRAPHENE_TEST_NETWORK
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std::cerr << "This program looks like a production application, but is calling the deterministic RNG.\n"
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<< "Perhaps the compile-time options in config.hpp were misconfigured?\n";
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exit(1);
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#else
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return;
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#endif
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}
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// These don't need to do anything if you don't have anything for them to do.
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static void deterministic_rand_cleanup() { _warn(); }
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static void deterministic_rand_add(const void *buf, int num, double add_entropy) { _warn(); }
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static int deterministic_rand_status() { _warn(); return 1; }
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static void deterministic_rand_seed(const void *buf, int num) { _warn(); }
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static fc::sha512 seed;
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static int deterministic_rand_bytes(unsigned char *buf, int num)
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{
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_warn();
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while (num)
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{
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seed = fc::sha512::hash(seed);
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int bytes_to_copy = std::min<int>(num, sizeof(seed));
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memcpy(buf, &seed, bytes_to_copy);
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num -= bytes_to_copy;
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buf += bytes_to_copy;
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}
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return 1;
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}
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// Create the table that will link OpenSSL's rand API to our functions.
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static RAND_METHOD deterministic_rand_vtable = {
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deterministic_rand_seed,
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deterministic_rand_bytes,
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deterministic_rand_cleanup,
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deterministic_rand_add,
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deterministic_rand_bytes,
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deterministic_rand_status
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};
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namespace graphene { namespace utilities {
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void set_random_seed_for_testing(const fc::sha512& new_seed)
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{
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_warn();
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RAND_set_rand_method(&deterministic_rand_vtable);
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seed = new_seed;
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return;
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}
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} }
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