cryptopal

cryptopal.go

package cryptopal

import (
	"encoding/base64"
	"encoding/hex"
	"testing"
)

var input = "49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d"

var gold = "SSdtIGtpbGxpbmcgeW91ciBicmFpbiBsaWtlIGEgcG9pc29ub3VzIG11c2hyb29t"

var b64 = base64.RawURLEncoding

// challenge 1
func TestHex2Base64(t *testing.T) {
	t.Log("hex:", input)
	var decoded = make([]byte, hex.DecodedLen(len([]byte(input))))
	_, err := hex.Decode(decoded, []byte(input))
	if err != nil {
		t.Log(err)
		t.FailNow()
	}

	t.Log("plain:", string(decoded))
	bb := make([]byte, b64.EncodedLen(len(decoded)))
	b64.Encode(bb, decoded)
	if gold != string(bb) {
		t.Log("wanted:", gold)
		t.Log("got:", string(bb))
		t.FailNow()
	}
	t.Log("base64:", string(bb))
}