Run results for: Simple string compare vs SHA-1 hash

Run details:

User agent: Mozilla/5.0 (Android 14; Mobile; rv:121.0) Gecko/121.0 Firefox/121.0

Browser: Firefox Mobile 121

Operating system: Android

Device Platform: Mobile

Date tested: 10 months ago

Test name	Executions per second
===	168.7 Ops/sec
SHA-1	39.1 Ops/sec

Script Preparation code:

let s10MB = "0123456789".repeat(1000*1000);
var strings10MB = Array.from(Array(20)).map(o=>s10MB + String.fromCharCode(32+~~(Math.random()*96)));

function hashString(input) {
    var encoder = new TextEncoder();
    return crypto.subtle.digest('SHA-1', encoder.encode(input)).then(function (hashBuffer) {
      var hashArray = Array.from(new Uint8Array(hashBuffer));
      return hashArray.map(byte => byte.toString(16).padStart(2, '0')).join('');
    });
}

Tests:

===
const s1 = strings10MB[~~(strings10MB.length*Math.random())]; const s2 = strings10MB[~~(strings10MB.length*Math.random())]; const b = s1 === s2;
SHA-1
const s1 = strings10MB[~~(strings10MB.length*Math.random())]; const s2 = strings10MB[~~(strings10MB.length*Math.random())]; const hash1 = hashString(s1); const hash2 = hashString(s2); const b = hash1 === hash2;

Run results for: Simple string compare vs SHA-1 hash

Worst case large string comparison.

===

SHA-1