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construct/include/ircd/ed25519.h

75 lines
2.1 KiB
C++

/*
* charybdis: 21st Century IRC++d
*
* Copyright (C) 2017 Charybdis Development Team
* Copyright (C) 2017 Jason Volk <jason@zemos.net>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
*/
#pragma once
#define HAVE_IRCD_ED25519_H
namespace ircd::ed25519
{
IRCD_EXCEPTION(ircd::error, error)
IRCD_EXCEPTION(error, bad_sig)
const size_t SK_SZ { 32 + 32 };
const size_t PK_SZ { 32 };
const size_t SIG_SZ { 64 };
const size_t SEED_SZ { 32 };
struct pk;
struct sk;
struct sig;
}
class ircd::ed25519::sk
{
std::unique_ptr<uint8_t[], void (*)(void *)> key;
public:
sig sign(const const_raw_buffer &msg) const;
sk(const std::string &filename, pk *const & = nullptr);
sk(pk *const &, const const_raw_buffer &seed);
sk(): key{nullptr, std::free} {}
};
struct ircd::ed25519::pk
:fixed_mutable_raw_buffer<PK_SZ>
{
bool verify(const const_raw_buffer &msg, const sig &) const;
using fixed_mutable_raw_buffer<PK_SZ>::fixed_mutable_raw_buffer;
pk()
:fixed_mutable_raw_buffer<PK_SZ>{nullptr}
{}
};
struct ircd::ed25519::sig
:fixed_mutable_raw_buffer<SIG_SZ>
{
using fixed_mutable_raw_buffer<SIG_SZ>::fixed_mutable_raw_buffer;
sig()
:fixed_mutable_raw_buffer<SIG_SZ>{nullptr}
{}
};