Brute force password cipher.

Method parameters: bruteForce(user_name, salt, hashed_password, min, max)

Tests(password + salt):

1. min = 3, max = 7, 0000000 + s - to test if method creates max digits

2. min = 3, max = 7, 0000009 + s - to test if method reaches 9 for a digit

3. min = 3, max = 7, 0000010 + s - to test if method changes previous digit after reaching 9

4. min = 3, max = 7, 0000090 + s - to test if method reaches 9 on new digit

5. min = 3, max = 7, 9000000 + s - to test if method reaches 9 for final digit

6. min = 3, max = 7, 9999999 + s - to test if method reaches 9 on all digits

7. min = 3, max = 7, 100 + s - to test if method changes can find min-digit number

8 min = 3, max = 7, 9999 + s - to test if method changes finds password not of min or max size