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A random password generator is a software program or hardware device that takes input from a random or pseudo-random number generator and automatically generates a password. Random passwords can be generated manually, using simple sources of randomness such as dice or coins, or they can be generated using a computer.
The strength of random passwords depends on the actual entropy of the underlying number generator; however, these are often not truly random, but pseudorandom. Many publicly available password generators use random number generators found in programming libraries that offer limited entropy.
Built-in password generator User Interface of the password generator. KeePass features a built-in password generator that generates random passwords. Random seeding can be done through user input (mouse movement and random keyboard input). Plugins. KeePass has a plugin architecture.
Diceware is a method for creating passphrases, passwords, and other cryptographic variables using ordinary dice as a hardware random number generator. For each word in the passphrase, five rolls of a six-sided die are required.
Password generator security. Some password managers may include a password generator. Generated passwords may be guessable if the password manager uses a weak method of randomly generating a "seed" that all passwords generated by this program.
Time-based one-time password (TOTP) is a computer algorithm that generates a one-time password (OTP) using the current time as a source of uniqueness. As an extension of the HMAC-based one-time password algorithm (HOTP), it has been adopted as Internet Engineering Task Force (IETF) standard RFC 6238 .