random.getValues() API does not seem to work as advertised in NodeJS

[wu-lee]

I'm using the library from node v8.11.0 / npm v5.8.0 on Ubuntu Linux 16.04.

I have a test case here: https://github.com/wu-lee/asmcrypto-test

Essentially, it installs the latest version (0.22.0) from NPM, and tries to generate a random number, in a number of ways, but things do not work as described in the documentation. The docs could be more clear about the requirements, and the status of getRandomValues

• there is no random.getValues function I can discover
• random.seed seems to exist but has no documentation of the argument requirements (type, length, etc.)
• getRandomValues seems to exist, but is undocumented, and does not respect skipSystemRNGWarning

(See comments below.)

Hope this helps.

const asmCrypto = require('asmcrypto.js');

function trycatch(cb) {
    try { return cb() } catch (e) { console.error("failed: " + e.message) };
}

const array = new Uint32Array(10);

trycatch(() => asmCrypto.random.getValues(array)); // getValues is not a function

trycatch(() => asmCrypto.getRandomValues(array)); // No strong PRNG available

asmCrypto.random.skipSystemRNGWarning = true;

trycatch(() => asmCrypto.getRandomValues(array)); // No strong PRNG available

asmCrypto.random.allowWeak = true;

trycatch(() => asmCrypto.getRandomValues(array)); // Succeeds, but still prints the warning

[alippai]

I removed all random generation related code from 2.0.0 as I'm not familiar with this field.