Regex for password policy

[frank_ratzlow]

Hi folks,

how can I merge these requirements into one regex?
string shall be comprised of chars from following sequences: A-Z; a-z;
0-9
string shall at least have 8 chars
at least one upper case letter should be contained (at any position)
at least one number should be contained (at any position)

Any idea?

TIA

Frank
(e-mail address removed)

 

[shakah]

Hi folks,

how can I merge these requirements into one regex?
string shall be comprised of chars from following sequences: A-Z; a-z;
0-9
string shall at least have 8 chars
at least one upper case letter should be contained (at any position)
at least one number should be contained (at any position)

Any idea?

TIA

Frank
(e-mail address removed)

Would multiple regex's work for you, maybe:

if( Pattern.matches("[A-Za-z0-9]{8,}", sPwd)
&& Pattern.matches(".*[A-Z].*", sPwd)
&& Pattern.matches(".*[0-9].*", sPwd)) {
// ...woo hoo!
}

 

[Ferenc Hechler]

Hi folks,

how can I merge these requirements into one regex?
string shall be comprised of chars from following sequences: A-Z; a-z;
0-9
string shall at least have 8 chars
at least one upper case letter should be contained (at any position)
at least one number should be contained (at any position)

Any idea?

TIA

Frank
(e-mail address removed)

Would multiple regex's work for you, maybe:

if( Pattern.matches("[A-Za-z0-9]{8,}", sPwd)
&& Pattern.matches(".*[A-Z].*", sPwd)
&& Pattern.matches(".*[0-9].*", sPwd)) {
// ...woo hoo!
}

there is no pattern for AND, but you can use "|" = OR.
So if you want to check what is not allowed you can do the following
"(.*[^a-zA-Z0-9].*)|(.{0,7})|([^A-Z]*)|([^0-9]*)"

feri

 

[SheikhG1900]

string shall at least have 8 chars
at least one upper case letter should be contained (at any position)
at least one number should be contained (at any position)

Answer
^(?=.*[A-Z])(?=.*\d)(.{8,})$

Reference
http://extremecodeworld.blogspot.com/2011/04/useful-regular-expression_22.html