<!DOCTYPE html>
<html>
<head>
<title>bigint-crypto-utils</title>
<meta charset="UTF-8" />
</head>
<body>
<div id="status">Still computing in background...</div>
<p>Look for the results in the JS console (Developer Tools)</p>
<script type="module">
import * as bigintCryptoUtils from '../dist/bundles/esm.js'
/* A BigInt with value 666 can be declared calling the bigint constructor as
BigInt('666') or with the shorter 666n.
Notice that you can also pass a number to the constructor, e.g. BigInt(666).
However, it is not recommended since values over 2**53 - 1 won't be safe but
no warning will be raised.
*/
const a = BigInt('5')
const b = BigInt('2')
const n = 19n
console.log(bigintCryptoUtils.modPow(a, b, n)) // prints 6
console.log(bigintCryptoUtils.modInv(2n, 5n)) // prints 3
console.log(bigintCryptoUtils.modInv(BigInt('3'), BigInt('5'))) // prints 2
console.log(bigintCryptoUtils.randBetween(2n ** 256n)) // Prints a cryptographically secure random number between 1 and 2**256 bits.
async function primeTesting() {
// Output of a probable prime of 2048 bits
console.log(await bigintCryptoUtils.prime(2048))
// Testing if a number is a probable prime (Miller-Rabin)
const number = 13139188972124309083000292697519085211422620620787723340749020496498012413131881656428777288953095338604061035790562501399090389032827482643578651715752317n
const isPrime = await bigintCryptoUtils.isProbablyPrime(number)
if (isPrime) {
console.log(`${number} is prime`)
} else {
console.log(`${number} is composite`)
}
}
primeTesting().then(() => {
document.getElementById(
"status"
).innerHTML = 'Done!'
})
</script>
</body>
</html>