The ISAAC cipher: Difference between revisions

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

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

msg.chars»ord»() » \

-> »^« 256.of{ rng.irand % 95 + 32 }.last(msg.len).reverseflip \

-> «%« '%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>