mirror of https://github.com/vitalif/zbackup
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
// Copyright (c) 2012-2014 Konstantin Isakov <ikm@zbackup.org> and ZBackup contributors, see CONTRIBUTORS
|
|
// Part of ZBackup. Licensed under GNU GPLv2 or later + OpenSSL, see LICENSE
|
|
|
|
#ifndef ENCRYPTION_KEY_HH_INCLUDED
|
|
#define ENCRYPTION_KEY_HH_INCLUDED
|
|
|
|
#include <exception>
|
|
#include <string>
|
|
|
|
#include "ex.hh"
|
|
#include "zbackup.pb.h"
|
|
|
|
using std::string;
|
|
|
|
class EncryptionKey
|
|
{
|
|
bool isSet;
|
|
unsigned const static KeySize = 16; // TODO: make this configurable
|
|
char key[ KeySize ];
|
|
|
|
public:
|
|
DEF_EX( exInvalidPassword, "Invalid password specified", std::exception )
|
|
|
|
/// Decodes the encryption key from the given info and password. If info is
|
|
/// passed as NULL, the password is ignored and no key is set
|
|
EncryptionKey( string const & password, EncryptionKeyInfo const * );
|
|
~EncryptionKey();
|
|
|
|
/// Returns true if key was set, false otherwise.
|
|
bool hasKey() const
|
|
{ return isSet; }
|
|
|
|
/// Returns the key. Check if there is one with hasKey() first. Note: the key
|
|
/// should not be copied, as it may be allocated in a locked page in the
|
|
/// future
|
|
void const * getKey() const
|
|
{ return key; }
|
|
|
|
/// Returns key size, in bytes
|
|
unsigned getKeySize() const
|
|
{ return sizeof( key ); }
|
|
|
|
/// Generates new key info using the given password
|
|
static void generate( string const & password, EncryptionKeyInfo &,
|
|
EncryptionKey & encryptionkey );
|
|
|
|
/// Returns a static instance without any key set
|
|
static EncryptionKey const & noKey();
|
|
};
|
|
|
|
#endif
|