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com.ongres.scram.common.bouncycastle.pbkdf2

public Class PKCS5S2ParametersGenerator

extends PBEParametersGenerator
Class Inheritance
Generator for PBE derived keys and ivs as defined by PKCS 5 V2.0 Scheme 2. This generator uses a SHA-1 HMac as the calculation function.

The document this implementation is based on can be found at RSA's PKCS5 Page

Field Summary

Modifier and TypeField and Description
private Mac
hMac

private byte[]
state

Inherited from com.ongres.scram.common.bouncycastle.pbkdf2.PBEParametersGenerator:
iterationCountpasswordsalt

Constructor Summary

AccessConstructor and Description
public
PKCS5S2ParametersGenerator(Digest digest)

Method Summary

Modifier and TypeMethod and Description
private void
F(byte[] S, int c, byte[] iBuf, byte[] out, int outOff)

private byte[]
generateDerivedKey(int dkLen)

public CipherParameters

Returns:

a KeyParameter object.
generateDerivedParameters(int
the size of the key we want (in bits)
keySize)

Implements abstract com.ongres.scram.common.bouncycastle.pbkdf2.PBEParametersGenerator.generateDerivedParameters.

Generate a key parameter derived from the password, salt, and iteration count we are currently initialised with.
Inherited from com.ongres.scram.common.bouncycastle.pbkdf2.PBEParametersGenerator:
getIterationCountgetPasswordgetSaltinitPKCS5PasswordToUTF8Bytes

Field Detail

hMacback to summary
private Mac hMac
stateback to summary
private byte[] state

Constructor Detail

PKCS5S2ParametersGeneratorback to summary
public PKCS5S2ParametersGenerator(Digest digest)

Method Detail

Fback to summary
private void F(byte[] S, int c, byte[] iBuf, byte[] out, int outOff)
generateDerivedKeyback to summary
private byte[] generateDerivedKey(int dkLen)
generateDerivedParametersback to summary
public CipherParameters generateDerivedParameters(int keySize)

Implements abstract com.ongres.scram.common.bouncycastle.pbkdf2.PBEParametersGenerator.generateDerivedParameters.

Generate a key parameter derived from the password, salt, and iteration count we are currently initialised with.

Parameters
keySize:int

the size of the key we want (in bits)

Returns:CipherParameters

a KeyParameter object.