+++ /dev/null
-// Password strength meter
-function passwordStrength(password1, username, password2) {
- var shortPass = 1, badPass = 2, goodPass = 3, strongPass = 4, mismatch = 5, symbolSize = 0, natLog, score;
-
- // password 1 != password 2
- if ( (password1 != password2) && password2.length > 0)
- return mismatch
-
- //password < 4
- if ( password1.length < 4 )
- return shortPass
-
- //password1 == username
- if ( password1.toLowerCase() == username.toLowerCase() )
- return badPass;
-
- if ( password1.match(/[0-9]/) )
- symbolSize +=10;
- if ( password1.match(/[a-z]/) )
- symbolSize +=26;
- if ( password1.match(/[A-Z]/) )
- symbolSize +=26;
- if ( password1.match(/[^a-zA-Z0-9]/) )
- symbolSize +=31;
-
- natLog = Math.log( Math.pow(symbolSize, password1.length) );
- score = natLog / Math.LN2;
-
- if (score < 40 )
- return badPass
-
- if (score < 56 )
- return goodPass
-
- return strongPass;
-}