mirror of
https://github.com/AGWA/git-crypt.git
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88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
/*
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* Copyright 2014 Andrew Ayer
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*
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* This file is part of git-crypt.
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*
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* git-crypt is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* git-crypt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with git-crypt. If not, see <http://www.gnu.org/licenses/>.
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*
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* Additional permission under GNU GPL version 3 section 7:
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*
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* If you modify the Program, or any covered work, by linking or
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* combining it with the OpenSSL project's OpenSSL library (or a
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* modified version of that library), containing parts covered by the
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* terms of the OpenSSL or SSLeay licenses, the licensors of the Program
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* grant you additional permission to convey the resulting work.
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* Corresponding Source for a non-source form of such a combination
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* shall include the source code for the parts of OpenSSL used as well
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* as that of the covered work.
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*/
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#ifndef GIT_CRYPT_KEY_HPP
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#define GIT_CRYPT_KEY_HPP
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#include <map>
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#include <functional>
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#include <stdint.h>
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#include <iosfwd>
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#include <string>
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enum {
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HMAC_KEY_LEN = 64,
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AES_KEY_LEN = 32
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};
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struct Key_file {
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public:
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struct Entry {
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unsigned char aes_key[AES_KEY_LEN];
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unsigned char hmac_key[HMAC_KEY_LEN];
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void load (std::istream&);
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void store (std::ostream&) const;
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void generate ();
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};
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struct Malformed { }; // exception class
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struct Incompatible { }; // exception class
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const Entry* get_latest () const;
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const Entry* get (uint32_t version) const;
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void add (uint32_t version, const Entry&);
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void load_legacy (std::istream&);
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void load (std::istream&);
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void store (std::ostream&) const;
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bool load_from_file (const char* filename);
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bool store_to_file (const char* filename) const;
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std::string store_to_string () const;
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void generate ();
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bool is_empty () const { return entries.empty(); }
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bool is_filled () const { return !is_empty(); }
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uint32_t latest () const;
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private:
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typedef std::map<uint32_t, Entry, std::greater<uint32_t> > Map;
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enum { FORMAT_VERSION = 1 };
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Map entries;
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};
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#endif
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