Class LLPasswordAlgorithmPBKDF2HmacSHA256

java.lang.Object

com.io7m.looseleaf.security.LLPasswordAlgorithmPBKDF2HmacSHA256

All Implemented Interfaces:

LLPasswordAlgorithmType

public final class LLPasswordAlgorithmPBKDF2HmacSHA256
extends Object
implements LLPasswordAlgorithmType

The PBKDF2 hashing algorithm using a SHA-256 HMAC.

Method Summary

Modifier and Type	Method	Description
boolean	check(String expectedHash, String receivedPassword, byte[] salt)	Check if the given plain text password matches the expected hash.
static LLPasswordAlgorithmType	create()	Create an algorithm with a strong iteration count and key length.
static LLPasswordAlgorithmType	create(int iterationCount, int keyLength)	Create an algorithm with the given iteration count and key length.
LLPassword	createHashed(String passwordText, byte[] salt)	Create a hashed password.
String	identifier()

Methods inherited from class Object

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

Methods inherited from interface LLPasswordAlgorithmType

createHashed

Method Details

create

public static LLPasswordAlgorithmType create(int iterationCount,
 int keyLength)

Create an algorithm with the given iteration count and key length.

Parameters:

iterationCount - The iteration count

keyLength - The key length

Returns:

An algorithm

create

public static LLPasswordAlgorithmType create()

Create an algorithm with a strong iteration count and key length.

Returns:

An algorithm

check

public boolean check(String expectedHash,
 String receivedPassword,
 byte[] salt)
              throws LLPasswordException

Description copied from interface: LLPasswordAlgorithmType

Check if the given plain text password matches the expected hash.

Specified by:

check in interface LLPasswordAlgorithmType

Parameters:

expectedHash - The expected hexadecimal uppercase hash

receivedPassword - The received plain text password

salt - The salt value

Returns:

true if the password matches

Throws:

LLPasswordException - On com.io7m.looseleaf.cmdline.internal errors such as missing algorithm support

createHashed

public LLPassword createHashed(String passwordText,
 byte[] salt)
                        throws LLPasswordException

Description copied from interface: LLPasswordAlgorithmType

Create a hashed password.

Specified by:

createHashed in interface LLPasswordAlgorithmType

Parameters:

passwordText - The plain text password

salt - A random salt value

Returns:

A hashed password

Throws:

LLPasswordException - On com.io7m.looseleaf.cmdline.internal errors such as missing algorithm support

identifier

public String identifier()

Specified by:

identifier in interface LLPasswordAlgorithmType

Returns:

The password algorithm identifier