Open ahoarau opened 6 months ago
Minimal example how to calculate sha-256 hash of a file:
#include <iostream>
#include <fstream>
#include <milo/primitive/codec/apie.h>
#include <milo/primitive/codec/base.h>
#include <milo/primitive/hash/apie.h>
#include <milo/primitive/hash/sha.h>
int main(int argc, char **argv)
{
if (argc < 2)
{
std::cerr << "Error. Missing path argument.";
return -1;
}
auto buffer = std::vector<char>(8192, 0);
auto fstream = std::ifstream(argv[1], std::ifstream::binary);
if (!fstream.is_open())
{
std::cerr << "Error. Could not open the file.\n";
return -1;
}
auto hash = milo::primitive::hash::apie<milo::primitive::hash::sha_2_256<>>{};
while (!fstream.eof())
{
fstream.read(buffer.data(), buffer.size());
hash.update(buffer.data(), fstream.gcount());
}
auto digest = hash.digest();
std::cout << milo::primitive::codec::encode<milo::primitive::codec::base_16<>, std::string>(digest) << std::endl;
return 0;
}
Excellent 👌 what do you think about adding MD5 next to all the sha ?
Will consider it, meanwhile if speed is your concern note that on relatively new x86-64
cpus, 2017 and later, sha-160
and sha-256
can be hardware accelerated and in this library they are.
Hi, It's not clear to me if we can use milo to hash files on the disk. Also, I would very much appreciate an MD5 hashing function. Best,