Package com.luna.common.encrypt

Class BCryptPasswordEncoder

java.lang.Object

com.luna.common.encrypt.BCryptPasswordEncoder

public class BCryptPasswordEncoder
extends Object

Implementation of PasswordEncoder that uses the BCrypt strong hashing function. Clients can optionally supply a "version" ($2a, $2b, $2y) and a "strength" (a.k.a. log rounds in BCrypt) and a SecureRandom instance. The larger the strength parameter the more work will have to be done (exponentially) to hash the passwords. The default value is 10.

Author:

Dave Syer

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	BCryptPasswordEncoder.BCryptVersion	Stores the default bcrypt version for use in configuration.

Constructor Summary

Constructors

Constructor	Description
BCryptPasswordEncoder()
BCryptPasswordEncoder(int strength)
BCryptPasswordEncoder(int strength, SecureRandom random)
BCryptPasswordEncoder(BCryptPasswordEncoder.BCryptVersion version)
BCryptPasswordEncoder(BCryptPasswordEncoder.BCryptVersion version, int strength)
BCryptPasswordEncoder(BCryptPasswordEncoder.BCryptVersion version, int strength, SecureRandom random)
BCryptPasswordEncoder(BCryptPasswordEncoder.BCryptVersion version, SecureRandom random)

Method Summary

Modifier and Type	Method	Description
String	encode(CharSequence rawPassword)
static void	main(String[] args)
boolean	matches(CharSequence rawPassword, String encodedPassword)
boolean	upgradeEncoding(String encodedPassword)

Methods inherited from class java.lang.Object

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

Constructor Details

BCryptPasswordEncoder

public BCryptPasswordEncoder()

BCryptPasswordEncoder

public BCryptPasswordEncoder(int strength)

Parameters:

strength - the log rounds to use, between 4 and 31

BCryptPasswordEncoder

public BCryptPasswordEncoder(BCryptPasswordEncoder.BCryptVersion version)

Parameters:

version - the version of bcrypt, can be 2a,2b,2y

BCryptPasswordEncoder

public BCryptPasswordEncoder(BCryptPasswordEncoder.BCryptVersion version,
 SecureRandom random)

Parameters:

version - the version of bcrypt, can be 2a,2b,2y

random - the secure random instance to use

BCryptPasswordEncoder

public BCryptPasswordEncoder(int strength,
 SecureRandom random)

Parameters:

strength - the log rounds to use, between 4 and 31

random - the secure random instance to use

BCryptPasswordEncoder

public BCryptPasswordEncoder(BCryptPasswordEncoder.BCryptVersion version,
 int strength)

Parameters:

version - the version of bcrypt, can be 2a,2b,2y

strength - the log rounds to use, between 4 and 31

BCryptPasswordEncoder

public BCryptPasswordEncoder(BCryptPasswordEncoder.BCryptVersion version,
 int strength,
 SecureRandom random)

Parameters:

version - the version of bcrypt, can be 2a,2b,2y

strength - the log rounds to use, between 4 and 31

random - the secure random instance to use

Method Details

main

public static void main(String[] args)

encode

public String encode(CharSequence rawPassword)

matches

public boolean matches(CharSequence rawPassword,
 String encodedPassword)

upgradeEncoding

public boolean upgradeEncoding(String encodedPassword)