A STRONG PASSWORD GENERATOR GENERATOR
A STRONG PASSWORD GENERATOR SOFTWARE
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Some users develop mnemonic phrases that have the random letters as the initial of each word.

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The strongest method for generating passwords is to select sufficient characters at random, but such passwords are generally the most difficult to remember - those passwords are generated by the online password generator. Passphrases and password-authenticated key agreement methods have been used to address this limitation. However, beware that even strong-looking passwords, and especially human-chosen passwords, are not equivalent to a strong encryption key, and should generally not be used as such. Also note that, having been published in this article as password examples, these are no longer good choices: examples from publicly accessible discussions about passwords are obviously good candidates for inclusion in a dictionary to be used for a dictionary attack. In such cases, adding another letter or number or two may offer equivalent security. Note that some systems do not allow symbols like #, and ! in passwords and they may be hard to find on some country-specific keyboards.

They are unlikely to be in any password cracking word list and are sufficiently long to make direct brute force search impractical in some systems. These passwords are longer and use combinations of lower and upper case letters, digits and symbols. Examples of stronger passwords would be tastywheeT34, and #23kLLflux. But note that even a 'strong' password may still be stolen, tricked, or extorted from a user, collected from a keyboard logger, overheard by tapping some communications medium, or copied from a Post-It note or Rolodex.Д®xamples of weak passwords include admin, 1234, susan, password, rover and 12/3/75 which might be easily guessed (the last being likely to be a personally significant date readily discoverable with a little research), and would certainly be found with an automated dictionary search attack in a system that permitted such action. For example, passwords generally are not suitable for use as encryption keys. In a cryptgraphic context, the terms can have considerable precision.

The necessary quality of the password depends on how well the password system limits attempts to guess a user's password, whether by a person who knows the user well, or a computer trying millions of possibilities. 'Weak' and 'strong' have meaning only with regard to specific password systems. So a student's password might not be worth more than a few seconds of computer time, whilst a password controlling access to a large bank's electronic money transfer system might be worth many weeks of computer time. The length of time deemed to be 'too long' will vary with the attacker, with the attacker's resources, with the ease with which a password can be tried, and with the importance of the password to the attacker. A strong password would be sufficiently long, random, or otherwise producible only by the user who chose it, so that 'guessing' for it will require too long a time. Computers are now fast enough to try all alphabetic passwords shorter than 7 characters, for example.ДЄ weak password would be one that was short or was a default, or which could be rapidly guessed by searching a subset of all possible passwords such as words in the dictionary, proper names, words based on the user name or common variations on these themes.

A too short password, perhaps chosen for ease of typing, is vulnerable if an attacker can obtain the cryptographic hash of the password.

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In tests on live systems, dictionary attacks are so routinely successful that software implementing this kind of attack is available for many systems. Dictionaries (often in computer-readable form) are available for many languages, and there exist lists of commonly-chosen passwords.

A password is vulnerable if it can be found in a list.

Personal data about individuals are now available from various sources, many on-line, and can often be obtained by someone using social engineering techniques, such as posing as an opinion surveyor.

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A password might be guessable if a user chooses an easily-discovered piece of personal information as a password (such as a student ID number, a boy- or girlfriend's name, a birthday, a telephone number, or a license plate number).

Lists of default passwords are available on the Internet.

Many users do not change the default password that comes with many computer security systems.Studies of production computer systems have for decades consistently shown that about 40% of all user-chosen passwords are readily guessed. Likelihood that a password can be guessed

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Password generator Factors in the security

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