com.microej.crypto.internal.pbekey

Class PBEKeyFactory

java.lang.Object

javax.crypto.SecretKeyFactorySpi

com.microej.crypto.internal.pbekey.PBEKeyFactory

public class PBEKeyFactory
extends SecretKeyFactorySpi

This class implements a key factory for PBE keys according to PKCS#5, meaning that the password must consist of printable ASCII characters (values 32 to 126 decimal inclusive) and only the low order 8 bits of each password character are used.

Author:

Jan Luehe

Constructor Summary

Constructors

Constructor and Description
PBEKeyFactory(String keytype) Simple constructor.

Method Summary

Modifier and Type	Method and Description
protected SecretKey	engineGenerateSecret(KeySpec keySpec) Generates a SecretKey object from the provided key specification (key material).
static boolean	isAlgorithmSupported(String algorithm) Checks if the algorithm is supported by the key factory.

Methods inherited from class java.lang.Object

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

Constructor Detail

PBEKeyFactory

public PBEKeyFactory(String keytype)

Simple constructor.

Parameters:

keytype - one of the supported key types.

Method Detail

engineGenerateSecret

protected SecretKey engineGenerateSecret(KeySpec keySpec)
                                  throws InvalidKeySpecException

Generates a SecretKey object from the provided key specification (key material).

Specified by:

engineGenerateSecret in class SecretKeyFactorySpi

Parameters:

keySpec - the specification (key material) of the secret key

Returns:

the secret key

Throws:

InvalidKeySpecException - if the given key specification is inappropriate for this key factory to produce a public key.

isAlgorithmSupported

public static boolean isAlgorithmSupported(String algorithm)

Checks if the algorithm is supported by the key factory.

Parameters:

algorithm - string that describes the algorithm.

Returns:

true if the algorithm is supported by the key factory, false otherwise.