const Benchmark = require('benny')
-const { secureRandom } = require('./benchmark-utils')
+const {
+ secureRandom,
+ secureRandomWithRandomValues
+} = require('./benchmark-utils')
+const crypto = require('crypto')
-const maximum = Number.MAX_SAFE_INTEGER
+const maximum = 281474976710654
/**
* @param max
* @returns
*/
function getSecureRandomInteger (max = Number.MAX_SAFE_INTEGER, min = 0) {
+ if (max < min || max < 0 || min < 0) {
+ throw new RangeError('Invalid interval')
+ }
max = Math.floor(max)
- if (min) {
+ if (min != null && min !== 0) {
min = Math.ceil(min)
return Math.floor(secureRandom() * (max - min + 1)) + min
}
return Math.floor(secureRandom() * (max + 1))
}
+/**
+ * @param max
+ * @param min
+ * @returns
+ */
+function getSecureRandomIntegerWithRandomValues (
+ max = Number.MAX_SAFE_INTEGER,
+ min = 0
+) {
+ if (max < min || max < 0 || min < 0) {
+ throw new RangeError('Invalid interval')
+ }
+ max = Math.floor(max)
+ if (min != null && min !== 0) {
+ min = Math.ceil(min)
+ return Math.floor(secureRandomWithRandomValues() * (max - min + 1)) + min
+ }
+ return Math.floor(secureRandomWithRandomValues() * (max + 1))
+}
+
/**
* @param max
* @param min
* @returns
*/
function getRandomInteger (max = Number.MAX_SAFE_INTEGER, min = 0) {
+ if (max < min || max < 0 || min < 0) {
+ throw new RangeError('Invalid interval')
+ }
max = Math.floor(max)
- if (min) {
+ if (min != null && min !== 0) {
min = Math.ceil(min)
return Math.floor(Math.random() * (max - min + 1)) + min
}
Benchmark.add('Secure random integer generator', () => {
getSecureRandomInteger(maximum)
}),
- Benchmark.add('Random integer generator', () => {
+ Benchmark.add(
+ 'Secure random with getRandomValues() integer generator',
+ () => {
+ getSecureRandomIntegerWithRandomValues(maximum)
+ }
+ ),
+ Benchmark.add('Crypto random integer generator', (max = maximum, min = 0) => {
+ max = Math.floor(max)
+ if (min !== undefined && min !== 0) {
+ min = Math.ceil(min)
+ return Math.floor(crypto.randomInt(min, max + 1))
+ }
+ return Math.floor(crypto.randomInt(max + 1))
+ }),
+ Benchmark.add('Math random integer generator', () => {
getRandomInteger(maximum)
}),
Benchmark.cycle(),