有偿求解密一个Js文件 - 全球主机交流论坛

function decrypt(data, key) {
const decryptionKey = key.split('').reverse().join('');
let decryptedData = CryptoJS.AES.decrypt({
ciphertext: data
}, decryptionKey, {
iv: decryptionKey,
padding: CryptoJS.pad.Pkcs7
}, true, 'utf8');
return decryptedData.toString(CryptoJS.enc.Utf8);
}
function webpSupportCheck() {
return new Promise((resolve, reject) => {
const webpImage = new Image();
webpImage.onload = webpImage.onerror = function () {
webpImage.onload = webpImage.onerror = null;
resolve(webpImage.width === 1);
};
webpImage.src = 'data:image/webp;base64,UklGRi4AAABXRUJQVlA4TCEAAAAvAUAAEB8wAiMw' +
'AgSSNtse/cXjxyCCmrYNWPwmHRH9jwMA';
});
}
function loadImage(url, element, retries = 0) {
const image = new Image();
image.crossOrigin = 'Anonymous';
image.onload = function () {
if (retries > 0) {
$(element).prev().find('.retry_img').remove();
}
$(element).attr('src', image.src);
$(element).removeClass('lazyload').addClass('loaded');
};
image.onerror = function () {
if (retries < 3) {
loadImage(url, element, retries + 1);
} else {
$(element).prev().find('.error-img').show();
$(element).prev().find('.retry_img').show();
}
};
image.src = url;
}
function handleImages() {
const lazyImages = document.querySelectorAll('img.lazy_img');
lazyImages.forEach(lazyImage => {
const dataHosts = lazyImage.getAttribute('data-img-hosts');
if (dataHosts) {
const hosts = dataHosts.split(',').map(host => atob(host));
const url = new URL(lazyImage.getAttribute('data-original'), window.location.origin);
url.hostname = hosts[Math.floor(Math.random() * hosts.length)];
loadImage(url.toString(), lazyImage);
} else {
loadImage(lazyImage.getAttribute('src'), lazyImage);
}
});
}
function main() {
const key = 'my2secret';
const data = '...'; // This should be the encrypted data to be decrypted.
const decryptedData = decrypt(data, key);
if (webpSupportCheck()) {
handleImages();
} else {
// Fallback for non-WebP support
}
}
main();

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