main.cpp

// Hashing demo: use hashing::md5 and hashing::sha256 from separate translation units
#include <iostream>
#include <string>
#include <vector>

#include "hashing/md5.hpp"
#include "hashing/sha256.hpp"

int main() {
    try {
        using hashing::md5;
        using hashing::sha256;

        struct Test {
            std::string input;
            std::string expect_md5;
            std::string expect_sha256;
        };

        std::vector<Test> tests = {
            {"",
             "d41d8cd98f00b204e9800998ecf8427e",
             "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"},
            {"abc",
             "900150983cd24fb0d6963f7d28e17f72",
             "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"},
            {"The quick brown fox jumps over the lazy dog",
             "9e107d9d372bb6826bd81d3542a419d6",
             "d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592"}
        };

        bool all_ok = true;
        for (const auto& t : tests) {
            auto md5_hex = md5(t.input);
            auto sha_hex = sha256(t.input);
            bool ok_md5 = (md5_hex == t.expect_md5);
            bool ok_sha = (sha_hex == t.expect_sha256);
            all_ok = all_ok && ok_md5 && ok_sha;

            std::cout << "Input: '" << t.input << "'\n";
            std::cout << "  MD5    = " << md5_hex << (ok_md5 ? " (OK)" : " (MISMATCH)") << "\n";
            std::cout << "  SHA256 = " << sha_hex << (ok_sha ? " (OK)" : " (MISMATCH)") << "\n\n";
        }

        if (!all_ok) {
            std::cerr << "One or more test vectors failed." << std::endl;
            return 1;
        }

        std::cout << "All hash tests passed." << std::endl;
        return 0;
    } catch (const std::exception& ex) {
        std::cerr << "Error: " << ex.what() << std::endl;
        return 2;
    }
}