WARNING: This is a port of the argon2 version 1.0, which is vulnerable to some tradeoff attacks. Issue #2 was created to track the progress. Up until this is fixed, using pzduniak/argon is not recommended. This library was written to allow usage of libargon2 in Go on Windows. Recently I have made some changes to the tvdburgt/go-argon2 bindings so that it works in such environment. Link's here.

Go conversion of the libargon2 library. Exports a simple API with only several features. Unwrapped round function is taken from magical/argon2, licensed under the MIT license.

Please note: due to the nature of the conversion, its performance might be lower than of the bindings. Also the memory clearing is NOT ported and depends on the GC.

go get github.com/pzduniak/argon2

Tests were ran on a 2015 Macbook Pro Retina 15". The conversion is ~3.5 times slower.

➜  argon2 git:(master) ✗ go test -bench=.
testing: warning: no tests to run
PASS
BenchmarkBConversion	     100	  14687543 ns/op	 4318704 B/op	     351 allocs/op
BenchmarkBBindings  	     300	   4093711 ns/op	     320 B/op	       3 allocs/op
BenchmarkMConversion	     100	  14622942 ns/op	 4318704 B/op	     351 allocs/op
BenchmarkMMagical   	     100	  14668521 ns/op	 4196464 B/op	       7 allocs/op
ok  	github.com/pzduniak/argon2	6.099s

package main

import (
	"encoding/hex"
	"fmt"

	"github.com/pzduniak/argon2"
)

func main() {
	var (
		password = []byte("password")
		salt     = []byte("testsalt123")
	)

	output, err := argon2.Key(password, salt, 3, 4, 4096, 32, argon2.Argon2i)
	if err != nil {
		fmt.Println(err)
		return
	}

	fmt.Println(hex.EncodeToString(output))
}