Package eu.webtoolkit.jwt.auth

Class BCryptHashFunction

java.lang.Object

eu.webtoolkit.jwt.auth.HashFunction

eu.webtoolkit.jwt.auth.BCryptHashFunction

public class BCryptHashFunction
extends HashFunction

A cryptograhpic hash function implemented using BCrypt. This hash function can be used for creating password hashes.

Constructor Summary

Constructors

Constructor	Description
BCryptHashFunction()

Method Summary

Modifier and Type	Method	Description
String	compute(String msg, String salt)	Computes the hash of a message + salt.
String	getName()	Returns the name for this hash function.
static void	main(String[] args)
boolean	verify(String msg, String salt, String hash)	Verifies a message with the salted hash.

Methods inherited from class java.lang.Object

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

Constructor Details

BCryptHashFunction

public BCryptHashFunction()

Method Details

getName

public String getName()

Returns the name for this hash function. Returns "BCrypt".

Specified by:

getName in class HashFunction

compute

public String compute(String msg,
 String salt)

Description copied from class: HashFunction

Computes the hash of a message + salt.

The message is usually an ASCII or UTF-8 string.

The salt and the computed hash are encoded in printable characters. This is usually ASCII-encoded or could be Base64-encoded.

Specified by:

compute in class HashFunction

verify

public boolean verify(String msg,
 String salt,
 String hash)

Description copied from class: HashFunction

Verifies a message with the salted hash.

The base implementation will recompute the hash of the message with the given salt, and compare it to the hash.

Some methods however store the salt and additional settings in the hash, and this information is thus needed to verify the message hash.

Overrides:

verify in class HashFunction

main

public static void main(String[] args)