ptth/bare_minimum_crypto/cpp/signing_key.h

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#pragma once
#include <optional>
#include <stdint.h>
#include <string>
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#include <vector>
#include "json.hpp"
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#include "expiring_signature.h"
#include "time_helpers.h"
namespace BareMinimumCrypto {
using namespace std;
using nlohmann::json;
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string get_machine_id ();
string get_passphrase_from_user ();
optional <json> try_load_msgpack_file (const string & file_path);
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struct SigningKey {
Bytes sk;
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SigningKey ();
Bytes pubkey () const;
Bytes pub_to_msgpack () const;
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optional <ExpiringSignature> sign (
const Bytes & payload,
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TimeRange tr
) const;
optional <ExpiringSignature> sign_key (const SigningKey & k, Instant now) const;
optional <ExpiringSignature> sign_data (const Bytes & v, Instant now) const;
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};
struct HumanKeyFile {
Bytes salt;
Instant time_created;
Bytes pubkey;
string machine_id;
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// This doesn't fsync, so it's possible to lose the key due to a power outage
// or filesystem nonsense right after this function returns.
// It also doesn't do the rename trick. The caller may do that.
static optional <SigningKey> generate (const string & file_path, const string & passphrase);
static optional <SigningKey> load (const string & file_path, const string & passphrase);
static optional <SigningKey> unlock_key (const Bytes & salt, const string & passphrase);
Bytes to_msgpack () const;
static optional <HumanKeyFile> try_from_msgpack (const json & msg);
};
struct MachineKeyFile {
Bytes secretkey;
Instant time_created;
string machine_id;
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static optional <SigningKey> generate (const string & file_path);
Bytes pubkey () const;
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Bytes to_msgpack () const;
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static optional <MachineKeyFile> try_from_msgpack (const json & msg);
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};
}