test_crypto_random.js

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const { WeaveCrypto } = ChromeUtils.importESModule(

  "resource://services-crypto/WeaveCrypto.sys.mjs"

);

var cryptoSvc = new WeaveCrypto();

add_task(async function test_crypto_random() {

  if (this.gczeal) {

    _("Running crypto random tests with gczeal(2).");

    gczeal(2);

  // Test salt generation.

  var salt;

  salt = cryptoSvc.generateRandomBytes(0);

  Assert.equal(salt.length, 0);

  salt = cryptoSvc.generateRandomBytes(1);

  Assert.equal(salt.length, 4);

  salt = cryptoSvc.generateRandomBytes(2);

  Assert.equal(salt.length, 4);

  salt = cryptoSvc.generateRandomBytes(3);

  Assert.equal(salt.length, 4);

  salt = cryptoSvc.generateRandomBytes(4);

  Assert.equal(salt.length, 8);

  salt = cryptoSvc.generateRandomBytes(8);

  Assert.equal(salt.length, 12);

  // sanity check to make sure salts seem random

  var salt2 = cryptoSvc.generateRandomBytes(8);

  Assert.equal(salt2.length, 12);

  Assert.notEqual(salt, salt2);

  salt = cryptoSvc.generateRandomBytes(1024);

  Assert.equal(salt.length, 1368);

  salt = cryptoSvc.generateRandomBytes(16);

  Assert.equal(salt.length, 24);

  // Test random key generation

  var keydata, keydata2, iv;

  keydata = await cryptoSvc.generateRandomKey();

  Assert.equal(keydata.length, 44);

  keydata2 = await cryptoSvc.generateRandomKey();

  Assert.notEqual(keydata, keydata2); // sanity check for randomness

  iv = cryptoSvc.generateRandomIV();

  Assert.equal(iv.length, 24);

  if (this.gczeal) {

    gczeal(0);

});