passlen(3)						     Library Functions Manual							passlen(3)

NAME

       passlen - Determines minimum password length (Enhanced Security)

LIBRARY

       Security Library - libsecurity.so

SYNOPSIS

       #include <sys/types.h> #include <sys/security.h> #include <prot.h>
       int passlen(	 time_t life_dur,      time_t login_delay,	int alphabet_size);

PARAMETERS

       Specifies  the  password  lifetime duration for an account (in seconds).  Specifies the amount of time (in seconds) between login attempts.
       Specifies the number of distinct characters that can be used in a password.

DESCRIPTION

       The passlen() function takes the password lifetime duration life_dur for an account and the login_delay between login attempts, both values
       in  seconds,  and  the  alphabet_size of distinct characters, and returns the minimum password length according to the algorithm in the DoD
       Password Management Guideline (the Green Book).	The parameter that specifies the probability of guessing a password is fixed to the  value
       of 1 chance in a million.

NOTES

       If  the	life_dur  or  prob_guess parameters change in the protected password database for this account (or for the system default if those
       values are used in an account), it is a good idea to invalidate the password in case the new parameters require a longer  minimum  password
       length.

       Programs using this function must be compiled with -lsecurity.  delim off

RELATED INFORMATION

       Functions: randomword(3), exp(3), floor(3).

       Commands: passwd(1).  delim off

																	passlen(3)