[완료] c/c++ 에서 256bits(32bytes)짜리 key를 생성하려면 어떻게 하는게 좋을까요?

byte[] Salt = Encoding.ASCII.GetBytes(Password.Length.ToString());
PasswordDeriveBytes SecretKey = new PasswordDeriveBytes(Password, Salt);
ICryptoTransform Encryptor = RijndaelCipher.CreateEncryptor(SecretKey.GetBytes(32), SecretKey.GetBytes(16));

#include <iostream>
 
#define CRYPTOPP_DEFAULT_NO_DLL
#include <cryptopp/dll.h>
#ifdef CRYPTOPP_WIN32_AVAILABLE
#include <windows.h>
#endif
#include <cryptopp/md5.h>
 
USING_NAMESPACE(CryptoPP)
USING_NAMESPACE(std)
const int MAX_PHRASE_LENGTH=250;
 
int main(int argc, char *argv[]) {
 
    CryptoPP::MD5 hash;
    byte digest[ CryptoPP::MD5::DIGESTSIZE ];
    std::string message = "Hello World!";
 
    hash.CalculateDigest( digest, (const byte*)message.c_str(), message.length());
 
    CryptoPP::HexEncoder encoder;
    std::string output;
    encoder.Attach( new CryptoPP::StringSink( output ) );
    encoder.Put( digest, sizeof(digest) );
    encoder.MessageEnd();
 
    std::cout << "Input string: " << message << std::endl;
    std::cout << "MD5: " << output << std::endl;
 
    return 0;
}