I found some requirements. It`s simple. All this links was found on first page of google with request "password requirements".



Analysis of requirements to be continued.



Samples:

https://admin.cs.vt.edu/password.html



Password must be atleast 7 characters long and contain atleast one of each of the following:

Uppercase letter

Lowercase letter

Special character or Number.



The characters " (double quote) and ' (single quote) are not allowed in passwords.



Password may not contain in full or partial your username.



You can not use a password that you have used in your past 5 password changes.



http://servicedesk.calpoly.edu/comp...q/password.html



Suggestions for creating an acceptable, secure password:

Don’t use 3 or more alphabetic characters in a row (such as Acfh or rtU)

Don’t use 3 or more numeric characters in a row (such as 391 or 4421)

Choose a password with at least 3 character types

Use special characters in your password

Think of a phrase such as ‘Learn by Doing; for Cal Poly.’ Substitute characters, numbers and special characters for the first letter of each word in the phrase. For example: L-bd;4Cp.

Remember to use a unique password.

Save your password in a secure and private location.

Applicants: You will need this password periodically throughout the application process. Please do not loose your passwords.

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What are the password rules/requirements? Why can’t I use whatever I want for my password?



The rules help you choose a password that can’t easily be guessed by other people or easily “cracked” by automated means.



Password Length

Minimum of 8 characters

Maximum length of 40 characters

What It Must Contain



It must contain at least one character from three of the following lists in the first 8 characters of the password:

Uppercase Alphabetic (A-Z)

Numbers (0-9)

Lower case Alphabetic (a-z)

These Special Characters are allowed:

! “ $ % & , ( ) * + - . / ; : < = > ? [ \ ] ^ _ { | } ~

These are not allowed:

# @ and the space character

What It Cannot Contain

Any words of 3 or more characters, including foreign words

Any groups of 3 or more characters of the same character type

Any names, person, places, or things found in a common dictionary

Any of your names (first, middle, last), any current Cal Poly username

Your previously used password (the system remembers your last password)

Repetitive characters (sequences)



www.lss.ku.edu/docs/Password-Requirements.pdf



A password must meet the following requirements:

• The password must be at least 8 characters long

• The password must contain at least one non-alpha character (a number, period,

space, comma etc)

• The password must contain at least one uppercase and one lowercase letter



http://helpdesk.wisc.edu/page.php?id=4529



SFS Password Requirements

Password must be at least 6 characters in length (maximum is 32).

Password must contain the following :

At least one numeric character (0-9)

At least on special character ! @ # $ % ^ & * ( ) - _ = + \\ |[ ] {} ; : / ? . > <

At least one Uppercase alpha character (A-Z)

At least one Lowercase alpha character (a-z)

Password must be changed every 180 days.

Password can not be reused.

Account will be locked after 5 unsuccessful logon attempts.