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This commit is contained in:
Pascal Engélibert 2025-04-06 00:03:47 +02:00
commit 616c17501a
11 changed files with 1142 additions and 243 deletions
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38
src/challenge.html
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@ -8,10 +8,42 @@
<body>
<h1>Fighting crawlers</h1>
<script type="text/javascript">
/*setTimeout(function() {
document.cookie = "mesozoa=1234; max-age=3600";
const target_zeros = 15;
const sha256 = async (input) => {
const input_buf = new TextEncoder().encode(input);
const output_buf = await window.crypto.subtle.digest("SHA-256", input_buf);
return new Uint8Array(output_buf);
};
function verify_hash(hash) {
return Math.clz32((hash[0] << 24) | (hash[1] << 16) | (hash[2] << 8) | hash[3]) >= target_zeros;
}
function get_cookie(name) {
const value = "; "+document.cookie;
const parts = value.split("; "+name+"=");
return parts.pop().split(";").shift();
}
function submit_proof(proof) {
document.cookie = "mesozoa-proof="+proof+"; domain=127.0.0.1; path=/; max-age=3600; samesite=strict";
window.location.reload();
}, 1000);*/
}
function timeout(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
async function pow(seed, nonce) {
var stop = nonce + 1000;
for(; nonce < stop; nonce ++) {
if(verify_hash(await sha256(("00000000"+nonce).slice(-8)+seed))) {
console.log(await sha256(("00000000"+nonce).slice(-8)+seed));
console.log(("00000000"+nonce).slice(-8));
submit_proof(("00000000"+nonce).slice(-8));
return;
}
}
setTimeout(function() {
pow(seed, nonce);
}, 0);
}
pow(get_cookie("mesozoa-challenge"), 0);
</script>
</body>
</html>