<?php

// Function to create HMAC-SHA256 hash with a secret
function createHash($text, $secret) {
    // Generate HMAC-SHA256 hash
    $hash = hash_hmac('sha256', $text, $secret);

    return $hash;
}

// Example usage
$textToHash = "Hello, World!";
$secretsFile = "secrets.txt";
$knownHash = 'known_hash'; // Replace with your actual known hash

// Read potential secrets from the file into an array
$potentialSecrets = file($secretsFile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);

if ($potentialSecrets === false) {
    die("Unable to read secrets file.");
}

foreach ($potentialSecrets as $secretKey) {
    $hashedText = createHash($textToHash, $secretKey);

    echo "Original Text: $textToHash\n";
    echo "Secret Key: $secretKey\n";
    echo "Hashed Text: $hashedText\n";

    // Check if the hash matches the known hash
    if ($hashedText === $knownHash) {
        echo "Match found! Corresponding Secret: $secretKey\n";
    }

    echo "-----------------------------\n";
}

?>