DES

console

cat /dev/urandom | head -c300000000 > random_test_data.bin

➜  zig-crypto git:(new-api) ✗ time openssl enc -des-ecb -in random_test_data.bin -out enc.bin -K 133457799BBCDFF1 -nopad
openssl enc -des-ecb -in src/random_test_data.bin -out enc.bin -K  -nopad  3.59s user 0.41s system 95% cpu 4.195 total

➜  zig-crypto git:(new-api) ✗ zig build-exe main.zig --release-fast --main-pkg-path .  && time ./des
78
./des  3.52s user 0.21s system 99% cpu 3.741 total

main.zig

pub fn main() !void {
    var keyLong: u64 = 0x133457799BBCDFF1;
    var keyBytes = mem.asBytes(&keyLong);
    mem.reverse(u8, keyBytes);
    const cipher = DES.init(keyBytes.*);

    var allocator = std.heap.page_allocator;
    const source = try std.fs.cwd().readFileAlloc(allocator, "src/random_test_data.bin", 1000 * 1000 * 1000 * 1000);
    defer allocator.free(source);

    var dest = try allocator.alloc(u8, source.len);
    defer allocator.free(dest);

    {
        var i: usize = 0;
        while (i < source.len) : (i += block_size) {
            cipher.crypt(.Encrypt, dest[i..(i + block_size)], source[i..(i + block_size)]);
        }
    }

    std.debug.warn("{}\n", .{dest[dest.len - 1]});
}