Random Number Generation Development Tutorials, Guides & Insights

• crypto.randomBytes:
• Library: crypto.randomBytes is part of Node.js’s built-in crypto module. It requires no additional dependencies and is readily available in any Node.js environment.
• Usage: The function takes a single argument specifying the number of bytes to generate and returns a Buffer object containing the random bytes.
• Example:

    const crypto = require('crypto');
    const randomBytes = crypto.randomBytes(32);
    console.log(randomBytes.toString('hex')); // Prints a 32-byte random hex string

function generateUUID() {
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
        const r = Math.random() * 16 | 0;
        const v = c === 'x' ? r : (r & 0x3 | 0x8);
        return v.toString(16);
    });
}
const uuid = generateUUID();
console.log('Generated UUID:', uuid);