Random bytes and numbers

Generate random bytes and numbers in Node.js and modern browsers with security in mind.

This small set of functions takes security serious and applies workarounds for JavaScript-specific quirks.

How to install

npm install random-bytes-numbers

How to use

Node.js:

var random_bytes_numbers = require('random-bytes-numbers')

// Do stuff

Browser:

requirejs(['random-bytes-numbers'], function (random_bytes_numbers) {
    // Do stuff
})

List of exported functions

• random_bytes()
• random_int()
• random()

API

random_bytes_numbers.random_bytes(size : number) : Uint8Array

Generate random bytes of specified size.

random_bytes_numbers.random_int(min : number, max : number) : number

Generate random integer from range [min, max]. max - min should be less or equal than Number.MAX_SAFE_INTEGER, which is 53bits.

random_bytes_numbers.random() : number

Replacement for Math.random() that can be used for cryptographic operations, returns number from range [0, 1).

Contribution

Feel free to create issues and send pull requests (for big changes create an issue first and link it from the PR), they are highly appreciated!

When reading LiveScript code make sure to configure 1 tab to be 4 spaces (GitHub uses 8 by default), otherwise code might be hard to read.

License

Free Public License 1.0.0 / Zero Clause BSD License

https://opensource.org/licenses/FPL-1.0.0

https://tldrlegal.com/license/bsd-0-clause-license