66 lines
3 KiB
C++
66 lines
3 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 <graphene/utilities/key_conversion.hpp>
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#include <fc/crypto/base58.hpp>
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#include <fc/variant.hpp>
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namespace graphene { namespace utilities {
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std::string key_to_wif(const fc::sha256& secret )
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{
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const size_t size_of_data_to_hash = sizeof(secret) + 1;
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const size_t size_of_hash_bytes = 4;
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char data[size_of_data_to_hash + size_of_hash_bytes];
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data[0] = (char)0x80;
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memcpy(&data[1], (char*)&secret, sizeof(secret));
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fc::sha256 digest = fc::sha256::hash(data, size_of_data_to_hash);
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digest = fc::sha256::hash(digest);
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memcpy(data + size_of_data_to_hash, (char*)&digest, size_of_hash_bytes);
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return fc::to_base58(data, sizeof(data));
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}
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std::string key_to_wif(const fc::ecc::private_key& key)
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{
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return key_to_wif( key.get_secret() );
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}
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fc::optional<fc::ecc::private_key> wif_to_key( const std::string& wif_key )
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{
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std::vector<char> wif_bytes;
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try
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{
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wif_bytes = fc::from_base58(wif_key);
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}
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catch (const fc::parse_error_exception&)
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{
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return fc::optional<fc::ecc::private_key>();
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}
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if (wif_bytes.size() < 5)
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return fc::optional<fc::ecc::private_key>();
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std::vector<char> key_bytes(wif_bytes.begin() + 1, wif_bytes.end() - 4);
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fc::ecc::private_key key = fc::variant(key_bytes).as<fc::ecc::private_key>();
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fc::sha256 check = fc::sha256::hash(wif_bytes.data(), wif_bytes.size() - 4);
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fc::sha256 check2 = fc::sha256::hash(check);
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if( memcmp( (char*)&check, wif_bytes.data() + wif_bytes.size() - 4, 4 ) == 0 ||
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memcmp( (char*)&check2, wif_bytes.data() + wif_bytes.size() - 4, 4 ) == 0 )
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return key;
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return fc::optional<fc::ecc::private_key>();
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}
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} } // end namespace graphene::utilities
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