Tag Info

New answers tagged

3

Computing entropy for a randomly chosen password can be broken down to a simple rule that can be used in virtually all cases, with some caveats. It's the log2() of the password character set space raised to the power of the password length. So, with a completely random password where all characters are independent, this is an easy calculation. E.G., For a ...


1

I would say that other character might confuse Oracle parser. You use SQL change the password: alter user xxx identified by pass; There are NO quotes around the password. So I would say it is for legacy reasons. Oracle has same restrictions also for identifier/table/column names. PS: password strength (entropy) is not primary determined by possible ...


0

Use a cryptographically secure random number generator to generate a random sequence. There are many available, built into different platforms. Many frameworks and languages provide wrappers to access these such as the openssl_random_pseudo_bytes function in PHP. You could generate your own. The article above suggests: A cryptographically secure hash of ...


1

Most random number generators just generate pseudorandom numbers. They create a series of numbers which appears random at first glance, but the numbers do follow an exact algorithm. To prevent them from generating the same series of numbers everytime they are used, they are initialized by seeding them with a start value. A good pseudorandom number generator ...



Top 50 recent answers are included