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The password's first character must be a letter, it must contain at least 4 characters and no more than 15 characters and no characters other than letters, numbers and the underscore may be used

Password expression. Password must be between 4 and 8 digits long and include at least one numeric digit.

Password matching expression. Password must be at least 4 characters, no more than 8 characters, and must include at least one upper case letter, one lower case letter, and one numeric digit.

Matches any string between 4 and 8 characters in length. Limits the length of a string. Useful to add to password regular expressions.

Will match a VBScript string and/or comment Ex: ' userinfo strUsername = "tomsve" iAge = 20 ' temp strPassword = "halloj" ...Would result in the following matches: ' userinfo "tomsve" ' temp "halloj" Good luck! Tom S. [email protected]

Password expresion that requires one lower case letter, one upper case letter, one digit, 6-13 length, and no spaces. This is merely an extension of a previously posted expression by Steven Smith ([email protected]) . The no spaces is new.

A general string validation to insure no malicious code is being passed through user input. General enough too allow email address, names, address, passwords, so on. Disallows ‘,\*&$<> or other characters that could cause issues.

Password matching expression. Match all alphanumeric character and predefined wild characters. Password must consists of at least 8 characters and not more than 15 characters.

matches a six character "password" that has to consist of numbers and letters with at least one letter in it.

This is an update of Paul Miller's RegEx. It will cut out literal <> but I haven't fully tested it, it's just a quick fix since his didn't work all that well. I also took out the \s. You could add this back in but I use this for very simple password verification, and I certainly have no use for spaces in my passwords.

I built this expression to test a string in ASP for valid username and password constraints. It can be adapted for any number of scenerios. For instance in this case, we needed to ensure the username someone wanted was not all numbers or all letters and was 6-15 characters in length with no special characters. This expression tests negatively for all number cases, then all letter cases, and lastly tests for only alphanumeric characters in the required range. In other words: the match must be alphanumeric with at least one number, one letter, and be between 6-15 character in length.

To detect non-alphanumeric characters (for new username/password validation, for instance): monkey(AT)greyledge.net 14-Oct-2003 11:26

This regex can be used to restrict passwords to a length of 8 to 20 aplhanumeric characters and select special characters. The password also can not start with a digit, underscore or special character and must contain at least one digit.

Password matching expression. Password must be at least 8 characters, no more than 15 characters, and must include at least one upper case letter, one lower case letter, and one numeric digit.

Password must contain at least one letter, at least one number, and be longer than six charaters.

THE Complex Password Filter Matching 3 of 4 Character catagories: 1.) at least 1 upper case character 2.) at least 1 lower case character 3.) at least 1 numerical character 4.) at least 1 special character It also enforces a min and max length and works for .Net and script Regex implimentations.

This RegExp is degigned to mach SQL OLEDB Connection String to the Named Groups Properties useful for .Net MATCH EXAMPLE(the submition field is too short):Provider="SQLOLEDB.1";Data Source=(local);Initial Catalog=master;User ID=sa;Password="SA_PASS";Connection TimeOut=90

This is User Name & Password validation expression. It does not allow blank spaces as well as special characters like $#%@&*(){}+

Password validator Requires 6-20 characters including at least 1 upper or lower alpha, and 1 digit. It should disallow just about everything else, inluding extended characters.

This regular expression match can be used for validating strong password. It expects atleast 1 small-case letter, 1 Capital letter, 1 digit, 1 special character and the length should be between 6-10 characters. The sequence of the characters is not important. This expression follows the above 4 norms specified by microsoft for a strong password.