sas-desc.hpp

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/*
 * This file is part of libkazv.
 * SPDX-FileCopyrightText: 2026 tusooa <tusooa@kazv.moe>
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */
 
#include <libkazv-config.hpp>
#include "crypto-util.hpp"
#include <copy-helper.hpp>
#include <immer/array.hpp>
#include <set>
 
namespace Kazv
{
    class SasDesc
    {
    public:
        static std::size_t constructRandomSize();
 
        SasDesc();
 
        SasDesc(RandomTag, RandomData r);
 
        SasDesc(SasDesc &&that);
 
        SasDesc &operator=(SasDesc &&that);
 
        ~SasDesc();
 
        void emplace(RandomTag, RandomData r);
 
        bool valid() const;
 
        std::string publicKey() const;
 
        void setTheirKey(std::string theirPublicKey);
 
        std::pair<immer::array<int> /* emoji */, immer::array<int> /* decimal */> getDisplayCodesCurve25519HkdfSha256(
            std::string starterUserId,
            std::string starterDeviceId,
            std::string starterKey,
            std::string accepterUserId,
            std::string accepterDeviceId,
            std::string accepterKey,
            std::string txnId
        ) const;
 
        std::string getKeyMacHkdfHMacSha256V2(
            std::string key,
            std::string ourUserId,
            std::string ourDeviceId,
            std::string theirUserId,
            std::string theirDeviceId,
            std::string txnId,
            std::string keyId
        ) const;
 
        bool verifyKeyMacHkdfHMacSha256V2(
            std::string mac,
            std::string key,
            std::string ourUserId,
            std::string ourDeviceId,
            std::string theirUserId,
            std::string theirDeviceId,
            std::string txnId,
            std::string keyId
        ) const;
 
        std::string getKeyListMacHkdfHMacSha256V2(
            std::set<std::string> keyList,
            std::string ourUserId,
            std::string ourDeviceId,
            std::string theirUserId,
            std::string theirDeviceId,
            std::string txnId
        ) const;
 
        bool verifyKeyListMacHkdfHMacSha256V2(
            std::string mac,
            std::set<std::string> keyList,
            std::string ourUserId,
            std::string ourDeviceId,
            std::string theirUserId,
            std::string theirDeviceId,
            std::string txnId
        ) const;
 
    private:
        struct Private;
        std::unique_ptr<Private> m_d;
    };
}