84 lines
3.1 KiB
C++
84 lines
3.1 KiB
C++
/**
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* Copyright 2021 BrutalWizard (https://github.com/bru74lw1z4rd). All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution
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**/
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#ifndef QBLOCKCIPHER_H
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#define QBLOCKCIPHER_H
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#include "QSimpleCrypto_global.h"
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#include <QObject>
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#include <memory>
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#include <openssl/aes.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/rand.h>
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#include "QCryptoError.h"
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// clang-format off
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namespace QSimpleCrypto
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{
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class QSIMPLECRYPTO_EXPORT QBlockCipher {
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#define Aes128Rounds 10
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#define Aes192Rounds 12
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#define Aes256Rounds 14
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public:
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QBlockCipher();
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///
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/// \brief generateRandomBytes - Function generates random bytes by size.
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/// \param size - Size of generated bytes.
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/// \return Returns random bytes.
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///
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QByteArray generateRandomBytes(const int& size);
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QByteArray generateSecureRandomBytes(const int& size);
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///
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/// \brief encryptAesBlockCipher - Function encrypts data with Aes Block Cipher algorithm.
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/// \param data - Data that will be encrypted.
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/// \param key - AES key.
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/// \param iv - Initialization vector.
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/// \param password - Encryption password.
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/// \param salt - Random delta.
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/// \param rounds - Transformation rounds.
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/// \param chiper - Can be used with OpenSSL EVP_CIPHER (ecb, cbc, cfb, ofb, ctr) - 128, 192, 256. Example: EVP_aes_256_cbc().
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/// \param md - Hash algroitm (OpenSSL EVP_MD). Example: EVP_sha512().
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/// \return Returns decrypted data or "", if error happened.
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///
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QByteArray encryptAesBlockCipher(QByteArray data, QByteArray key,
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QByteArray iv = "", const int& rounds = Aes256Rounds,
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const EVP_CIPHER* cipher = EVP_aes_256_cbc(), const EVP_MD* md = EVP_sha512());
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///
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/// \brief decryptAesBlockCipher - Function decrypts data with Aes Block Cipher algorithm.
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/// \param data - Data that will be decrypted.
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/// \param key - AES key.
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/// \param iv - Initialization vector.
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/// \param password - Decryption password.
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/// \param salt - Random delta.
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/// \param rounds - Transformation rounds.
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/// \param chiper - Can be used with OpenSSL EVP_CIPHER (ecb, cbc, cfb, ofb, ctr) - 128, 192, 256. Example: EVP_aes_256_cbc().
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/// \param md - Hash algroitm (OpenSSL EVP_MD). Example: EVP_sha512().
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/// \return Returns decrypted data or "", if error happened.
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///
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QByteArray decryptAesBlockCipher(QByteArray data, QByteArray key,
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QByteArray iv = "", const int& rounds = Aes256Rounds,
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const EVP_CIPHER* cipher = EVP_aes_256_cbc(), const EVP_MD* md = EVP_sha512());
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///
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/// \brief error - Error handler class.
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///
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QCryptoError error;
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};
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} // namespace QSimpleCrypto
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#endif // QBLOCKCIPHER_H
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