127 lines
4.4 KiB
C++
127 lines
4.4 KiB
C++
/*! \file picrypt.h
|
||
* \ingroup Crypt
|
||
* \~\brief
|
||
* \~english Cryptographic using libsodium
|
||
* \~russian Шифрование с помощью libsodium
|
||
*/
|
||
/*
|
||
PIP - Platform Independent Primitives
|
||
Cryptographic class using lib Sodium
|
||
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 Lesser 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 Lesser General Public License for more details.
|
||
|
||
You should have received a copy of the GNU Lesser General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
#ifndef PICRYPT_H
|
||
#define PICRYPT_H
|
||
|
||
#include "pip_crypt_export.h"
|
||
#include "pistring.h"
|
||
|
||
class PIP_CRYPT_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 hash from bytearray
|
||
static PIByteArray hash(const PIByteArray & data);
|
||
|
||
//! Generate hash from bytearray
|
||
static PIByteArray hash(const PIByteArray & data, const unsigned char * key, size_t keylen);
|
||
|
||
//! Returns hash size
|
||
static size_t sizeHash();
|
||
|
||
//! 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();
|
||
|
||
//! Generate random buffer
|
||
static PIByteArray generateRandomBuff(int size);
|
||
|
||
//! Returns key size
|
||
static size_t sizeKey();
|
||
|
||
//! Returns size which be added to data size in encryption process
|
||
static size_t sizeCrypt();
|
||
|
||
//! Function randomly generates a secret key and a corresponding public key for digital signature
|
||
static void generateSignKeys(PIByteArray & public_key, PIByteArray & secret_key);
|
||
|
||
//! Function generates a secret key from input data and a corresponding public key for digital signature
|
||
static void generateSignKeys(PIByteArray & public_key, PIByteArray & secret_key, const PIByteArray & seed);
|
||
|
||
//! Function extract sign public key from sing secret key
|
||
static PIByteArray extractSignPublicKey(const PIByteArray & secret_key);
|
||
|
||
//! Calculate digital signature for data
|
||
PIByteArray signMessage(const PIByteArray & data, PIByteArray secret_key);
|
||
|
||
//! Verify digital signature of signed message
|
||
bool verifySign(const PIByteArray & data, const PIByteArray & signature, PIByteArray public_key);
|
||
|
||
//! Function randomly generates a secret key and a corresponding public key for authenticated encryption
|
||
static void generateKeypair(PIByteArray & public_key, PIByteArray & secret_key);
|
||
|
||
//! Function generates a secret key from input data and a corresponding public key for authenticated encryption
|
||
static void generateKeypair(PIByteArray & public_key, PIByteArray & secret_key, const PIByteArray & seed);
|
||
|
||
//! Encrypt given data "data"
|
||
PIByteArray crypt(const PIByteArray &data, const PIByteArray & public_key, const PIByteArray & secret_key);
|
||
|
||
//! Decrypt given data "crypt_data"
|
||
PIByteArray decrypt(const PIByteArray & crypt_data, const PIByteArray & public_key, const PIByteArray & secret_key, bool * ok = 0);
|
||
|
||
//! Generate password hash from "password"
|
||
static PIByteArray passwordHash(const PIString & password, const PIByteArray & seed);
|
||
|
||
//! Returns libsodium version
|
||
static PIString version();
|
||
|
||
|
||
private:
|
||
static bool init();
|
||
|
||
PIByteArray nonce_, key_;
|
||
|
||
};
|
||
|
||
#endif // PICRYPT_H
|