Run results for: Math.random vs crypto.getRandom

Run details:

User agent: Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Mobile Safari/537.36

Browser: Chrome Mobile 91

Operating system: Android 6.0

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
Math.random()	8489242.0 Ops/sec
crypto.getRandomValues()	699887.5 Ops/sec

Tests:

Math.random()
Math.random()
crypto.getRandomValues()
crypto.getRandomValues(new Uint32Array(1))[0] / 4294967296