The ISAAC cipher: Difference between revisions

=={{header|Sidef}}==

{{trans|Perl}}

<lang ruby>require 'Math::Random::ISAAC';

func xor_isaac(key, msg) {

var rng = %s'Math::Random::ISAAC'.new(unpack('C*', key));

msg.chars»ord»()

»^« 256.of{ rng.irand % 95 + 32 }.last(msg.len).reverse

«%« '%02X' -> join;

}

var msg = 'a Top Secret secret';

var key = 'this is my secret key';

var enc = xor_isaac(key, msg);

var dec = xor_isaac(key, pack('H*', enc));

say "Message: #{msg}";

say "Key : #{key}";

say "XOR : #{enc}";

say "XOR dcr: #{pack('H*', dec)}";</lang>

{{out}}

<pre>

Message: a Top Secret secret

Key : this is my secret key

XOR : 1C0636190B1260233B35125F1E1D0E2F4C5422

XOR dcr: a Top Secret secret

</pre>