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