4 ms·

What's wrong with seeding with time so long as you do it with nanoseconds?

• simias 5y ago
  That's not the case here, and even then why bother when modern operating systems have ways to easily get you good quality entropy? If you use a decent random library you won't have to bother reinventing the wheel. I had to generate a 20 char random key string in Rust the other day, I just wrote: rand::thread_rng() .sample_iter(&Alphanumeric) .take(20) .map(char::from) .collect() There. Uniform, decent entropy, explicit, simple.
• kadoban 5y ago
  You likely can't get a safe amount of entropy from the available resolution in time. For example, even assuming nanoseconds, that's only log(10^9) bits of entropy if you can guess what second (not that hard, may even be public). That's nowhere near enough. I'd also doubt that many ways you try to get a nanosecond resolution time actually have that resolution, there's probably discrete steps of lower resolution.