77 lines
2.4 KiB
C++
77 lines
2.4 KiB
C++
/*! \file picrypt.h
|
|
* \brief Cryptographic class using lib Sodium
|
|
*/
|
|
/*
|
|
PIP - Platform Independent Primitives
|
|
Cryptographic class using lib Sodium
|
|
Copyright (C) 2018 Andrey Bychkov work.a.b@yandex.ru
|
|
|
|
This program 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.
|
|
|
|
This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef PICRYPT_H
|
|
#define PICRYPT_H
|
|
|
|
#include "pistring.h"
|
|
|
|
class PIP_EXPORT PICrypt {
|
|
public:
|
|
//! Construct and generate random key
|
|
PICrypt();
|
|
|
|
//! Set key to "key", key size must be a \a sizeKey()
|
|
bool setKey(const PIByteArray & key);
|
|
|
|
//! Generate and set key from keyphrase "secret"
|
|
PIByteArray setKey(const PIString & secret);
|
|
|
|
//! Returns current key
|
|
PIByteArray key() {return key_;}
|
|
|
|
//! Encrypt given data "data", result size will be increased by \a sizeCrypt()
|
|
PIByteArray crypt(const PIByteArray & data);
|
|
|
|
//! Decrypt given data "crypt_data"
|
|
PIByteArray decrypt(const PIByteArray & crypt_data, bool * ok = 0);
|
|
|
|
//! Encrypt given data "data" with key "key", result size will be increased by \a sizeCrypt()
|
|
static PIByteArray crypt(const PIByteArray & data, PIByteArray key);
|
|
|
|
//! Decrypt given data "crypt_data" with key "key"
|
|
static PIByteArray decrypt(const PIByteArray & crypt_data, PIByteArray key, bool * ok = 0);
|
|
|
|
//! Generate hash from keyphrase "secret", may be used as a key for encryption
|
|
static PIByteArray hash(const PIString & secret);
|
|
|
|
//! Generate short hash from string "s", may be used for hash table
|
|
static ullong shorthash(const PIString & s, PIByteArray key = PIByteArray());
|
|
|
|
//! Generate random key
|
|
static PIByteArray generateKey();
|
|
|
|
//! Returns key size
|
|
static size_t sizeKey();
|
|
|
|
//! Returns size which be added to data size in encryption process
|
|
static size_t sizeCrypt();
|
|
|
|
private:
|
|
static bool init();
|
|
|
|
PIByteArray nonce_, key_;
|
|
|
|
};
|
|
|
|
#endif // PICRYPT_H
|