From Wikipedia, the two requirements of this type of random number generator are: To generate a password, a cryptographically secure pseudo-random number generator (CPRNG) should be used.

If that one piece of information is known (or can be guessed), it is possible to reproduce their output and see the passwords that would have been generated. They are generally seeded with the current time. They are based on algorithms and not appropriate for generating passwords. Most random number generators on computers are psuedorandom. Here is what I learned in the process of creating that site about creating secure random passwords: Random Source I'm the author of the random password generating site. Unfortunately, you cannot use lastpass to protect your lastpass container, so you'll have to rely on your own password generating skills to remember that one! Generating a password that would take a modern machine a few million years to crack is not a difficult challenge - because while the people writing the crackers know how the generator works, the people writing the generator know how the crackers work too.Īs for lastpass, as far as I know your password container is encrypted and decrypted locally, so very, very little chance of that ever being compromised. Not dictionary words, long, with symbols, both cases of letters, numbers, so on.

Password cracking is a known, predictable thing, and you can use that to create passwords that are effective at resisting it. They're not truly pseudorandom (Or at least, any good generator, like you'd find in a proper password management application), but follow rules designed to create passwords that aren't random, but very hard to guess. It's random, it could come out as password1!

Lastpass random password