function scoreSingleByteXORStrings(array $strings, array $weights, $penalty = 0)
{
$topScores = [];
$topChars = [];
foreach ($strings as $pos => $string) {
$scores = scoreSingleByteXOR($string, $weights, $penalty);
arsort($scores);
$topScores[$pos] = current($scores);
$topChars[$pos] = key($scores);
}
return [$topScores, $topChars];
}
$char = $trial[$j];
if (isset($weights[$char])) {
$score += $weights[$char];
} else {
$score -= $penalty;
}
}
$scores[$i] = $score;
}
return $scores;
}
// don't output if we're included into another script.
if (!debug_backtrace()) {
$encrypted = hex2bin('454f42442e37696771343b31696b62353169624f4f303b3a343152');
$encryptedLen = strlen($encrypted);
$scores = scoreSingleByteXOR($encrypted, $englishLanguageWeights);
arsort($scores);
print "Highest scoring character codes:\n";
$i = 0;
foreach ($scores as $k => $v) {
print "{$k} - {$v}\n";
if (++$i === 3) {
break;
}
}
print "\nDecrypted strings:\n";
$i = 0;
foreach ($scores as $k => $v) {
$decypted = $encrypted ^ str_repeat(chr($k), $encryptedLen);
print "{$k}: {$decypted}\n";
if (++$i === 3) {
