com.absio.crypto.kdf

Class PBKDF2

java.lang.Object

com.absio.crypto.kdf.PBKDF2

public class PBKDF2
extends Object

This a class to perform defined PBKDF2 key generation. It performs key generation using the SDK enums MacAlgorithm and AESKeyStrength for the operation specification.

Constructor Summary

Constructors

Constructor and Description
PBKDF2(MacAlgorithm macAlgorithm, AESKeyStrength keyStrength, String encoding) Create an instance with the given MacAlgorithm, AESKeyStrength and encoding.

Method Summary

Modifier and Type	Method and Description
byte[]	generateDerivedKey(String password, byte[] salt, int iterationCount) Generate the derived PBKDF2 key using the password, salt and iteration count.

Methods inherited from class java.lang.Object

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

Constructor Detail

PBKDF2

public PBKDF2(MacAlgorithm macAlgorithm,
              AESKeyStrength keyStrength,
              String encoding)
       throws NoSuchAlgorithmException

Create an instance with the given MacAlgorithm, AESKeyStrength and encoding.

Parameters:

macAlgorithm - the name of the MAC algorithm to use

keyStrength - the key strength for determining the key size in bytes

encoding - the encoding to use

Throws:

NoSuchAlgorithmException - thrown if the MAC algorithm is not supported

Method Detail

generateDerivedKey

public byte[] generateDerivedKey(String password,
                                 byte[] salt,
                                 int iterationCount)
                          throws InvalidKeyException,
                                 UnsupportedEncodingException

Generate the derived PBKDF2 key using the password, salt and iteration count. NOTE: this uses the classes MacAlgorithm, AESKeyStrength and encoding as operational parameters

Parameters:

password - the password

salt - the salt

iterationCount - the iteration count

Returns:

the derived PBDKF2 key

Throws:

InvalidKeyException - thrown if an error occurred while deriving the key

UnsupportedEncodingException - thrown if the provided encoding is not supported