Secure password generator

What length of the password you want to have (the longer the safer).

The value must be between 15 and 100:

Choose how big the class of characters you want to use.

(The bigger the class is the more secure password is.)

1. letters and digits 2. [1] AND '_' 3. [2] AND !, @, #, $, %, ^, &, *, (, ), {, }, [, ], :, ", ;, ', <, >, ?, ,, ., /, -, +, =, \, |