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rjz / crypto-aes-256-gcm-demo.js

Last active March 28, 2026 22:39

example using node.js crypto API with aes-256-gcm

	const buffer = require('buffer');
	const crypto = require('crypto');

	// Demo implementation of using `aes-256-gcm` with node.js's `crypto` lib.
	const aes256gcm = (key) => {
	const ALGO = 'aes-256-gcm';

	// encrypt returns base64-encoded ciphertext
	const encrypt = (str) => {
	// The `iv` for a given key must be globally unique to prevent