Run results for: Math.random vs crypto.getRandom sizes

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.193 Safari/537.36

Browser: Chrome 86

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
Math.random()	5914280.0 Ops/sec
crypto.getRandomValues()	149095.0 Ops/sec
crypto.getRandomValues() UINT	163912.2 Ops/sec
crypto.getRandomValues() UINT8	157811.9 Ops/sec

Tests:

Math.random()
Math.random()
crypto.getRandomValues()
crypto.getRandomValues(new Uint32Array(1))[0] / 4294967296
crypto.getRandomValues() UINT
crypto.getRandomValues(new Int32Array(1))[0] / 4294967296
crypto.getRandomValues() UINT8
crypto.getRandomValues(new Uint8Array(1))[0] / 4294967296