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128 lines
3.6 KiB
128 lines
3.6 KiB
// Copyright (c) 2020-2021, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// 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
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#pragma once
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#include <vector>
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#include <gcrypt.h>
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#include <span.h>
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#include "s_expression.h"
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namespace openpgp
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{
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enum algorithm : uint8_t
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{
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rsa = 1,
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};
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class public_key_rsa
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{
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public:
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public_key_rsa(s_expression expression, size_t bits);
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size_t bits() const;
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const gcry_sexp_t &get() const;
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private:
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s_expression m_expression;
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size_t m_bits;
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};
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class public_key_block : public std::vector<public_key_rsa>
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{
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public:
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public_key_block(const std::string &armored);
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public_key_block(const epee::span<const uint8_t> buffer);
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std::string user_id() const;
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private:
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std::string m_user_id;
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};
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class signature_rsa
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{
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public:
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enum type : uint8_t
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{
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binary_document = 0,
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canonical_text_document = 1,
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};
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signature_rsa(
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uint8_t algorithm,
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std::pair<uint8_t, uint8_t> hash_leftmost_bytes,
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uint8_t hash_algorithm,
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const std::vector<uint8_t> &hashed_data,
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type type,
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s_expression signature,
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uint8_t version);
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static signature_rsa from_armored(const std::string &armored_signed_message);
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static signature_rsa from_base64(const std::string &base64);
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static signature_rsa from_buffer(const epee::span<const uint8_t> input);
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bool verify(const epee::span<const uint8_t> message, const public_key_rsa &public_key) const;
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private:
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s_expression hash_message(const epee::span<const uint8_t> message, size_t public_key_bits) const;
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std::vector<uint8_t> hash_asn_object_id() const;
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s_expression hash_bytes(const epee::span<const uint8_t> message, size_t public_key_bits) const;
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static std::vector<uint8_t> format_hashed_appendix(
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uint8_t algorithm,
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uint8_t hash_algorithm,
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const std::vector<uint8_t> &hashed_data,
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uint8_t type,
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uint8_t version);
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private:
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uint8_t m_hash_algorithm;
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std::pair<uint8_t, uint8_t> m_hash_leftmost_bytes;
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std::vector<uint8_t> m_hashed_appendix;
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s_expression m_signature;
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type m_type;
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};
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class message_armored
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{
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public:
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message_armored(const std::string &message_armored);
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operator epee::span<const uint8_t>() const;
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private:
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std::string m_message;
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};
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} // namespace openpgp
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