com.atlassian.security.password

Class PKCS5S2PasswordHashGenerator

java.lang.Object

com.atlassian.security.password.PKCS5S2PasswordHashGenerator

All Implemented Interfaces:

PasswordHashGenerator

public final class PKCS5S2PasswordHashGenerator
extends Object
implements PasswordHashGenerator

Encodes passwords using PKCS 5 version 2, as published by RSA and implemented in BouncyCastle. The iteration count is 10000 and the provided salt must be exactly 16 bytes. The generated hash will be 256 bits (32 bytes) long.

Clients should not use this class directly, but pass an instance to DefaultPasswordEncoder.

This generator is safe for use on multiple threads because it creates a new instance of the underlying generator for each call to generateHash(byte[], byte[]).

See Also:

RSA specification, PKCS5S2ParametersGenerator

Constructor Summary

Constructors

Constructor and Description
PKCS5S2PasswordHashGenerator()

Method Summary

Modifier and Type	Method and Description
byte[]	generateHash(byte[] rawPassword, byte[] salt) Encodes the rawPassword bytes and salt according to their method specified by the implementation.
int	getRequiredSaltLength() Returns the required salt length for this hash generator, zero if this generator does not require a salt or -1 if the generator accepts salts of varying length.

Methods inherited from class java.lang.Object

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

Constructor Detail

PKCS5S2PasswordHashGenerator

public PKCS5S2PasswordHashGenerator()

Method Detail

generateHash

public byte[] generateHash(byte[] rawPassword,
                           byte[] salt)

Description copied from interface: PasswordHashGenerator

Encodes the rawPassword bytes and salt according to their method specified by the implementation. The encoded bytes should be returned without including the salt.

Specified by:

generateHash in interface PasswordHashGenerator

Parameters:

rawPassword - the password to be encoded

salt - a salt which may be used by some algorithms

Returns:

the encoded password bytes (without appending or prepending the salt)

getRequiredSaltLength

public int getRequiredSaltLength()

Description copied from interface: PasswordHashGenerator

Returns the required salt length for this hash generator, zero if this generator does not require a salt or -1 if the generator accepts salts of varying length.

Specified by:

getRequiredSaltLength in interface PasswordHashGenerator