org.bremersee.utils

Class PasswordUtils

java.lang.Object

org.bremersee.utils.PasswordUtils

public abstract class PasswordUtils
extends Object

Some methods to work with passwords.

Author:

Christian Bremer

Field Summary

Fields

Modifier and Type	Field and Description
static String[]	PARTIAL_REGEX_CHECKS An array with regular expressions to validate the quality of a password: PARTIAL_REGEX_CHECKS[0] : lower chars (a-z) PARTIAL_REGEX_CHECKS[1] : upper chars (A-Z) PARTIAL_REGEX_CHECKS[2] : numbers (0-9) PARTIAL_REGEX_CHECKS[3] : symbols ( {@code ~!

Method Summary

Modifier and Type	Method and Description
static String	createRandomClearPassword() Create a new random password (with symbols and a variable length greater than 14).
static String	createRandomClearPassword(boolean withSymbols) Create a new random password (with or without symbols and a variable length greater than 14).
static String	createRandomClearPassword(int length) Create a new random password with symbols and the specified length.
static String	createRandomClearPassword(int length, boolean withVariableLength, boolean withSymbols) Creates a new random password.
static double	getPasswordQuality(String clearPassword, Integer minLength) Calculates the quality of the password.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PARTIAL_REGEX_CHECKS

public static final String[] PARTIAL_REGEX_CHECKS

An array with regular expressions to validate the quality of a password:

• PARTIAL_REGEX_CHECKS[0] : lower chars (a-z)
• PARTIAL_REGEX_CHECKS[1] : upper chars (A-Z)
• PARTIAL_REGEX_CHECKS[2] : numbers (0-9)
• PARTIAL_REGEX_CHECKS[3] : symbols ( ~!@#$%^&*_-+=`|\(){}[]:;"'<>,.?/)

Method Detail

createRandomClearPassword

public static String createRandomClearPassword()

Create a new random password (with symbols and a variable length greater than 14).

Returns:

a new random password

createRandomClearPassword

public static String createRandomClearPassword(boolean withSymbols)

Create a new random password (with or without symbols and a variable length greater than 14).

Parameters:

withSymbols - with or without symbols?

Returns:

a new random password

createRandomClearPassword

public static String createRandomClearPassword(int length)

Create a new random password with symbols and the specified length.

Parameters:

length - the length of the password

Returns:

a new random password

createRandomClearPassword

public static String createRandomClearPassword(int length,
                                               boolean withVariableLength,
                                               boolean withSymbols)

Creates a new random password.

Parameters:

length - the minimum length of the password

withVariableLength - should the length be variable?

withSymbols - should the password contains symbols?

Returns:

the new random password

getPasswordQuality

public static double getPasswordQuality(String clearPassword,
                                        Integer minLength)

Calculates the quality of the password.

Parameters:

clearPassword - the clear password

minLength - the minimum length of the password (optional)

Returns:

a value between 0 (bad quality) and 1 (very good quality