matrixion/include/Olm.hpp
Konstantinos Sideris 604cdcec8a Save the olm account after we create new one-time keys
Otherwise after a restart the old account will be loaded and we
won't be able to decrypt messages from devices using the new one-time keys.

Also new one-time key upload requests will fail due to conflicts with
the existing keys with the same keyid.
2018-06-18 12:56:47 +03:00

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2.1 KiB
C++

#pragma once
#include <boost/optional.hpp>
#include <memory>
#include <mtx.hpp>
#include <mtxclient/crypto/client.hpp>
constexpr auto OLM_ALGO = "m.olm.v1.curve25519-aes-sha2";
namespace olm {
struct OlmCipherContent
{
std::string body;
uint8_t type;
};
inline void
from_json(const nlohmann::json &obj, OlmCipherContent &msg)
{
msg.body = obj.at("body");
msg.type = obj.at("type");
}
struct OlmMessage
{
std::string sender_key;
std::string sender;
using RecipientKey = std::string;
std::map<RecipientKey, OlmCipherContent> ciphertext;
};
inline void
from_json(const nlohmann::json &obj, OlmMessage &msg)
{
if (obj.at("type") != "m.room.encrypted")
throw std::invalid_argument("invalid type for olm message");
if (obj.at("content").at("algorithm") != OLM_ALGO)
throw std::invalid_argument("invalid algorithm for olm message");
msg.sender = obj.at("sender");
msg.sender_key = obj.at("content").at("sender_key");
msg.ciphertext =
obj.at("content").at("ciphertext").get<std::map<std::string, OlmCipherContent>>();
}
mtx::crypto::OlmClient *
client();
void
handle_to_device_messages(const std::vector<nlohmann::json> &msgs);
boost::optional<json>
try_olm_decryption(const std::string &sender_key, const OlmCipherContent &content);
void
handle_olm_message(const OlmMessage &msg);
//! Establish a new inbound megolm session with the decrypted payload from olm.
void
create_inbound_megolm_session(const std::string &sender,
const std::string &sender_key,
const nlohmann::json &payload);
void
handle_pre_key_olm_message(const std::string &sender,
const std::string &sender_key,
const OlmCipherContent &content);
mtx::events::msg::Encrypted
encrypt_group_message(const std::string &room_id,
const std::string &device_id,
const std::string &body);
void
mark_keys_as_published();
} // namespace olm