Utils.h

/*
 * Copyright 2016-2024 Luca Zanconato
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
#ifndef SALTPACK_UTILS_H
#define SALTPACK_UTILS_H
 
#include "types.h"
 
namespace saltpack {
 
    class Utils {
 
    public:
        static void generateKeypair(BYTE_ARRAY &publickey, BYTE_ARRAY &secretkey);
 
        static void generateSignKeypair(BYTE_ARRAY &publickey, BYTE_ARRAY &secretkey);
 
        static BYTE_ARRAY derivePublickey(BYTE_ARRAY secretkey);
 
        static int baseXblockSize(const std::string& alphabet, int size);
 
        static std::string baseXencode(const BYTE_ARRAY& data, std::string alphabet);
 
        static std::string baseXencode(BYTE_ARRAY data, size_t size, std::string alphabet);
 
        static BYTE_ARRAY baseXdecode(std::string data, const std::string& alphabet);
 
        static BYTE_ARRAY hexToBin(const std::string& hex);
 
        static std::string binToHex(BYTE_ARRAY bin);
 
        static BYTE_ARRAY generateRandomBytes(size_t size);
 
        static BYTE_ARRAY deriveKeyFromPassword(unsigned long long int keySize, const std::string& password, BYTE_ARRAY salt,
                                                unsigned long long int opsLimit, size_t memLimit);
    };
}
 
#endif //SALTPACK_UTILS_H