I couldn't exactly understand the 1st query.

This is for the 2nd query;

Positive Scenarios:

1. Enter and check pwd field with min value(8)with a 
special char and a cap letter.
2. Enter and check pwd field with max value(13)including a 
special char and a cap letter.
3. Enter values between 8 to 13 including a special char 
and a cap letter.

Negative Scenario:

1. Enter blank data in the pwd field.
2. Enter invalid data(only special char or only numbers).
3. Enter data more than the max value of 13.
4. Enter data excluding special char and cap letter.

 There r still lots of combinations that we could check 
like; 

1. Check if data entered in pwd field is encrypted or not.
2. Copy and paste in a text editor file and see if data is 
still encrypted or not.

We should make sure that, invalid data should throw a 
validation error. 

Hope this is useful!!