In
telecommunication, a
password length parameter is a basic parameter the value of which affects
password strength against
brute force attack and so is a contributor to
computer security.
One use of the password length parameters is in the expression
, where
is the probability that a password can be guessed in its lifetime,
is the maximum lifetime a password can be used to
log into a
system
A system is a group of Interaction, interacting or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its environment (systems), environment, is described by its boundaries, ...
,
is the number of guesses per unit of
time, and
is the number of unique algorithm-generated passwords (the 'password space').
The degree of password security is determined by the probability that a password can be guessed in its lifetime.
See also
*
Key stretching
*
Password cracking
In cryptanalysis and computer security, password cracking is the process of recovering passwords from data that has been stored in or transmitted by a computer system in scrambled form. A common approach (brute-force attack) is to repeatedly try ...
References
Computer network security
Password authentication
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