randomfill randomfill from node that works in the browser. In node you just get crypto.randomBytes, but in the browser it uses .crypto/msCrypto.getRandomValues var randomFill = require('randomfill');var bufrandomFill.randomFillSync(16);//get 16 random bytesrandomFill.randomFill(16, function (err, resp) { // resp is 16 random bytes});