100 lines
3.9 KiB
C++
100 lines
3.9 KiB
C++
/*
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Copyright (c) 2016, Arvid Norberg, Alden Torres
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <libtorrent/kademlia/ed25519.hpp>
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#include <libtorrent/random.hpp>
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#include <libtorrent/ed25519.hpp>
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namespace libtorrent {
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namespace dht
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{
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void ed25519_create_seed(std::array<char, 32>& seed)
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{
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aux::random_bytes(seed);
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}
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void ed25519_create_keypair(public_key& pk
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, secret_key& sk, std::array<char, 32> const& seed)
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{
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auto const pk_ptr = reinterpret_cast<unsigned char*>(pk.bytes.data());
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auto const sk_ptr = reinterpret_cast<unsigned char*>(sk.bytes.data());
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auto const seed_ptr = reinterpret_cast<unsigned char const*>(seed.data());
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libtorrent::ed25519_create_keypair(pk_ptr, sk_ptr, seed_ptr);
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}
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void ed25519_sign(signature& sig, span<char const> msg
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, public_key const& pk, secret_key const& sk)
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{
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auto const sig_ptr = reinterpret_cast<unsigned char*>(sig.bytes.data());
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auto const msg_ptr = reinterpret_cast<unsigned char const*>(msg.data());
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auto const pk_ptr = reinterpret_cast<unsigned char const*>(pk.bytes.data());
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auto const sk_ptr = reinterpret_cast<unsigned char const*>(sk.bytes.data());
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libtorrent::ed25519_sign(sig_ptr, msg_ptr, msg.size(), pk_ptr, sk_ptr);
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}
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bool ed25519_verify(signature const& sig
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, span<char const> msg, public_key const& pk)
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{
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auto const sig_ptr = reinterpret_cast<unsigned char const*>(sig.bytes.data());
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auto const msg_ptr = reinterpret_cast<unsigned char const*>(msg.data());
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auto const pk_ptr = reinterpret_cast<unsigned char const*>(pk.bytes.data());
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return libtorrent::ed25519_verify(sig_ptr, msg_ptr, msg.size(), pk_ptr) == 1;
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}
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void ed25519_add_scalar(std::shared_ptr<public_key> pk
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, std::shared_ptr<secret_key> sk, std::array<char, 32> const& scalar)
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{
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auto const pk_ptr = pk
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? reinterpret_cast<unsigned char*>(pk->bytes.data()) : nullptr;
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auto const sk_ptr = sk
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? reinterpret_cast<unsigned char*>(sk->bytes.data()) : nullptr;
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auto const scalar_ptr = reinterpret_cast<unsigned char const*>(scalar.data());
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libtorrent::ed25519_add_scalar(pk_ptr, sk_ptr, scalar_ptr);
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}
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void ed25519_key_exchange(std::array<char, 32>& secret
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, public_key const& pk, secret_key const& sk)
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{
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auto const secret_ptr = reinterpret_cast<unsigned char*>(secret.data());
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auto const pk_ptr = reinterpret_cast<unsigned char const*>(pk.bytes.data());
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auto const sk_ptr = reinterpret_cast<unsigned char const*>(sk.bytes.data());
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libtorrent::ed25519_key_exchange(secret_ptr, pk_ptr, sk_ptr);
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}
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}}
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