Secure settings rework

client/3rd/QSimpleCrypto/include/QBlockCipher.h

@@ -0,0 +1,83 @@
+/**
+ * Copyright 2021 BrutalWizard (https://github.com/bru74lw1z4rd). All Rights Reserved.
+ *
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution
+**/
+
+#ifndef QBLOCKCIPHER_H
+#define QBLOCKCIPHER_H
+
+#include "QSimpleCrypto_global.h"
+
+#include <QObject>
+
+#include <memory>
+
+#include <openssl/aes.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/rand.h>
+
+#include "QCryptoError.h"
+
+// clang-format off
+namespace QSimpleCrypto
+{
+    class QSIMPLECRYPTO_EXPORT QBlockCipher {
+
+    #define Aes128Rounds 10
+    #define Aes192Rounds 12
+    #define Aes256Rounds 14
+
+    public:
+        QBlockCipher();
+
+        ///
+        /// \brief generateRandomBytes - Function generates random bytes by size.
+        /// \param size - Size of generated bytes.
+        /// \return Returns random bytes.
+        ///
+        QByteArray generateRandomBytes(const int& size);
+
+        ///
+        /// \brief encryptAesBlockCipher - Function encrypts data with Aes Block Cipher algorithm.
+        /// \param data - Data that will be encrypted.
+        /// \param key - AES key.
+        /// \param iv - Initialization vector.
+        /// \param password - Encryption password.
+        /// \param salt - Random delta.
+        /// \param rounds - Transformation rounds.
+        /// \param chiper - Can be used with OpenSSL EVP_CIPHER (ecb, cbc, cfb, ofb, ctr) - 128, 192, 256. Example: EVP_aes_256_cbc().
+        /// \param md - Hash algroitm (OpenSSL EVP_MD). Example: EVP_sha512().
+        /// \return Returns decrypted data or "", if error happened.
+        ///
+        QByteArray encryptAesBlockCipher(QByteArray data, QByteArray key,
+            QByteArray iv = "", const int& rounds = Aes256Rounds,
+            const EVP_CIPHER* cipher = EVP_aes_256_cbc(), const EVP_MD* md = EVP_sha512());
+
+        ///
+        /// \brief decryptAesBlockCipher - Function decrypts data with Aes Block Cipher algorithm.
+        /// \param data - Data that will be decrypted.
+        /// \param key - AES key.
+        /// \param iv - Initialization vector.
+        /// \param password - Decryption password.
+        /// \param salt - Random delta.
+        /// \param rounds - Transformation rounds.
+        /// \param chiper - Can be used with OpenSSL EVP_CIPHER (ecb, cbc, cfb, ofb, ctr) - 128, 192, 256. Example: EVP_aes_256_cbc().
+        /// \param md - Hash algroitm (OpenSSL EVP_MD). Example: EVP_sha512().
+        /// \return Returns decrypted data or "", if error happened.
+        ///
+        QByteArray decryptAesBlockCipher(QByteArray data, QByteArray key,
+            QByteArray iv = "", const int& rounds = Aes256Rounds,
+            const EVP_CIPHER* cipher = EVP_aes_256_cbc(), const EVP_MD* md = EVP_sha512());
+
+        ///
+        /// \brief error - Error handler class.
+        ///
+        QCryptoError error;
+    };
+} // namespace QSimpleCrypto
+
+#endif // QBLOCKCIPHER_H