tools/key_generator_tools.cpp

/*
 * Copyright (c) 2019-2022 ExpoLab, UC Davis
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 */

#include <fcntl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>

#include "common/crypto/key_generator.h"

using namespace resdb;

void WriteKey(const KeyInfo& key, const std::string& file_name) {
  std::string str;
  assert(key.SerializeToString(&str));

  printf("save key to path %s\n", file_name.c_str());
  int fd = open(file_name.c_str(), O_WRONLY | O_CREAT, 0666);
  if (fd < 0) {
    printf("open file fail %s\n", strerror(errno));
  }
  assert(fd >= 0);
  write(fd, str.c_str(), str.size());
  close(fd);
}

int main(int argc, char** argv) {
  std::string type = "ED25519";
  std::string path = "./";
  if (argc < 2) {
    printf("<path> [type](RSA|AES|ED25519(default))\n");
    exit(0);
  } else {
    path = argv[1];
    if (argc > 2) {
      type = argv[2];
    }
  }
  SignatureInfo::HashType hash_type;
  if (type == "RSA") {
    hash_type = SignatureInfo::RSA;
  } else if (type == "AES") {
    hash_type = SignatureInfo::CMAC_AES;
  } else if (type == "ED25519") {
    hash_type = SignatureInfo::ED25519;
  } else {
    printf("type invalid\n");
    exit(0);
  }

  SecretKey key = KeyGenerator::GeneratorKeys(hash_type);

  std::string str;
  assert(key.SerializeToString(&str));

  // Save private key and public key to files.
  KeyInfo pub_info, pri_info;
  pub_info.set_key(key.public_key());
  pub_info.set_hash_type(key.hash_type());

  pri_info.set_key(key.private_key());
  pri_info.set_hash_type(key.hash_type());

  WriteKey(pri_info, path + ".key.pri");
  WriteKey(pub_info, path + ".key.pub");
}