mirror of
https://github.com/AGWA/git-crypt.git
synced 2025-12-06 04:40:59 -08:00
117 lines
3.0 KiB
C++
117 lines
3.0 KiB
C++
/*
|
|
* Copyright 2014 Andrew Ayer
|
|
*
|
|
* This file is part of git-crypt.
|
|
*
|
|
* git-crypt is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* git-crypt is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with git-crypt. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Additional permission under GNU GPL version 3 section 7:
|
|
*
|
|
* If you modify the Program, or any covered work, by linking or
|
|
* combining it with the OpenSSL project's OpenSSL library (or a
|
|
* modified version of that library), containing parts covered by the
|
|
* terms of the OpenSSL or SSLeay licenses, the licensors of the Program
|
|
* grant you additional permission to convey the resulting work.
|
|
* Corresponding Source for a non-source form of such a combination
|
|
* shall include the source code for the parts of OpenSSL used as well
|
|
* as that of the covered work.
|
|
*/
|
|
|
|
#ifndef GIT_CRYPT_KEY_HPP
|
|
#define GIT_CRYPT_KEY_HPP
|
|
|
|
#include <map>
|
|
#include <functional>
|
|
#include <stdint.h>
|
|
#include <iosfwd>
|
|
#include <string>
|
|
|
|
enum {
|
|
HMAC_KEY_LEN = 64,
|
|
AES_KEY_LEN = 32
|
|
};
|
|
|
|
struct Key_file {
|
|
public:
|
|
struct Entry {
|
|
uint32_t version;
|
|
unsigned char aes_key[AES_KEY_LEN];
|
|
unsigned char hmac_key[HMAC_KEY_LEN];
|
|
|
|
Entry ();
|
|
|
|
void load (std::istream&);
|
|
void load_legacy (uint32_t version, std::istream&);
|
|
void store (std::ostream&) const;
|
|
void generate (uint32_t version);
|
|
};
|
|
|
|
struct Malformed { }; // exception class
|
|
struct Incompatible { }; // exception class
|
|
|
|
const Entry* get_latest () const;
|
|
|
|
const Entry* get (uint32_t version) const;
|
|
void add (const Entry&);
|
|
|
|
void load_legacy (std::istream&);
|
|
void load (std::istream&);
|
|
void store (std::ostream&) const;
|
|
|
|
bool load_from_file (const char* filename);
|
|
bool store_to_file (const char* filename) const;
|
|
|
|
std::string store_to_string () const;
|
|
|
|
void generate ();
|
|
|
|
bool is_empty () const { return entries.empty(); }
|
|
bool is_filled () const { return !is_empty(); }
|
|
|
|
uint32_t latest () const;
|
|
|
|
void set_key_name (const char* k) { key_name = k ? k : ""; }
|
|
const char* get_key_name () const { return key_name.empty() ? 0 : key_name.c_str(); }
|
|
private:
|
|
typedef std::map<uint32_t, Entry, std::greater<uint32_t> > Map;
|
|
enum { FORMAT_VERSION = 2 };
|
|
|
|
Map entries;
|
|
std::string key_name;
|
|
|
|
void load_header (std::istream&);
|
|
|
|
enum {
|
|
HEADER_FIELD_END = 0,
|
|
HEADER_FIELD_KEY_NAME = 1
|
|
};
|
|
enum {
|
|
KEY_FIELD_END = 0,
|
|
KEY_FIELD_VERSION = 1,
|
|
KEY_FIELD_AES_KEY = 3,
|
|
KEY_FIELD_HMAC_KEY = 5
|
|
};
|
|
enum {
|
|
MAX_FIELD_LEN = 1<<20
|
|
};
|
|
};
|
|
|
|
enum {
|
|
KEY_NAME_MAX_LEN = 128
|
|
};
|
|
|
|
bool validate_key_name (const char* key_name, std::string* reason =0);
|
|
|
|
#endif
|