Package com.io7m.looseleaf.security

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 java.lang.Object

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

Methods inherited from interface com.io7m.looseleaf.security.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