void DigestFilePair::calculate( const fs::path file ) {
fs::ifstream file_stream( file );
CryptoPP::FileSource fsource( file_stream, true );
CryptoPP::SHA512 sha;
byte digest[sha.DigestSize()];
byte *data = new byte[ fsource.MaxRetrievable() ];
size_t size = fsource.Get( data, fsource.MaxRetrievable() );
sha.CalculateDigest( digest, data, size );
std::stringstream ss;
for(int i = 0; i < sha.DigestSize(); i++)
ss << std::hex << std::setw(2) << std::setfill('0') << (int) digest[i];
delete[] data;
_digest = ss.str();
_file = file;
}
std::string hash_sha512(std::string input)
{
CryptoPP::SHA512 sha;
unsigned char* buffer = new unsigned char[sha.DigestSize()];
unsigned char* inputbytes = new unsigned char[input.size()];
memcpy(inputbytes, input.c_str(), input.size());
sha.CalculateDigest(buffer, inputbytes, input.size());
char* hashedbytes = new char[sha.DigestSize()];
memcpy(hashedbytes, buffer, sha.DigestSize());
std::string hashed(hashedbytes, sha.DigestSize());
delete[] buffer;
delete[] inputbytes;
delete[] hashedbytes;
return hashed;
}