Package de.intarsys.tools.authenticate

Class PasswordTools

  • public class PasswordTools
extends java.lang.Object
    A tool class for handling passwords and authentication

    • Constructor Summary

      Constructors 
      Constructor Description
      PasswordTools()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static char[] createRandom​(int length)
      Create a random password of length length.
      static byte[] decrypt​(byte[] bytes)
      Decrypt a byte array which was previously encrypted using encrypt.
      static char[] decrypt​(java.lang.String value)
      Decrypt a string which was previously encrypted using encrypt.
      static byte[] encrypt​(byte[] bytes)
      Encrypt a clear text array of bytes.
      static java.lang.String encrypt​(char[] value)
      Encrypt a clear text array of chars.
      static java.lang.String hash​(char[] password)
      A one way hash for a clear text password.
      static void initialize​(byte[] salt, char[] passphrase)
      Initialize the PasswordTools.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • PasswordTools

        public PasswordTools()

    • Method Detail

      • createRandom

        public static char[] createRandom​(int length)
        Create a random password of length length.
        Parameters:
        length -
        Returns:
        A new random password.

      • decrypt

        public static byte[] decrypt​(byte[] bytes)
        Decrypt a byte array which was previously encrypted using encrypt. Provided the same salt and passphrase are used for initialization, this method returns the original unencrypted input.
        Parameters:
        bytes -
        Returns:
        The decrypted representation of bytes

      • decrypt

        public static char[] decrypt​(java.lang.String value)
        Decrypt a string which was previously encrypted using encrypt. Provided the same salt and passphrase are used for initialization, this method returns the original unencrypted input.
        Parameters:
        value -
        Returns:
        The decrypted representation of value

      • encrypt

        public static byte[] encrypt​(byte[] bytes)
        Encrypt a clear text array of bytes. The result is the plain encrypted byte array.
        Parameters:
        bytes -
        Returns:
        The encrpyted representation of bytes

      • encrypt

        public static java.lang.String encrypt​(char[] value)
        Encrypt a clear text array of chars. The result is a Base64 encoded string version of the encrypted UTF-8 encoded input bytes.
        Parameters:
        value -
        Returns:
        An encrypted, invertible representation of value

      • hash

        public static java.lang.String hash​(char[] password)
        A one way hash for a clear text password.
        Parameters:
        password -
        Returns:
        A one way hash for a clear text password.

      • initialize

        public static void initialize​(byte[] salt,
                              char[] passphrase)
        Initialize the PasswordTools.
        Parameters:
        salt -
        passphrase -