com.ibm.crypto.ibmjcehybrid.provider

Class HmacMD2Hybrid

java.lang.Object

javax.crypto.MacSpi

com.ibm.crypto.ibmjcehybrid.provider.HmacMD2Hybrid

All Implemented Interfaces:

java.lang.Cloneable

public final class HmacMD2Hybrid
extends javax.crypto.MacSpi

This class is a facade for the HmacMD2Hybrid Message Authentication Code (MAC) algorithm.

Constructor Summary

Constructors

Constructor and Description
HmacMD2Hybrid() Creates a new instance of the HmacMD2Hybrid class.

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
protected byte[]	engineDoFinal() Completes the HMAC computation and resets the HMAC for further use, maintaining the secret key that the HMAC was initialized with.
protected int	engineGetMacLength() Returns the length of the HMAC in bytes.
protected void	engineInit(java.security.Key key, java.security.spec.AlgorithmParameterSpec params) Initializes this mac with a key and a set of algorithm parameters.
protected void	engineReset() Resets the HMAC for further use, maintaining the secret key that the HMAC was initialized with.
protected void	engineUpdate(byte input) Processes the given byte.
protected void	engineUpdate(byte[] input, int offset, int len) Processes the first len bytes in input, starting at offset.

Methods inherited from class javax.crypto.MacSpi

engineUpdate

Methods inherited from class java.lang.Object

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

Constructor Detail

HmacMD2Hybrid

public HmacMD2Hybrid()

Creates a new instance of the HmacMD2Hybrid class.

Method Detail

engineGetMacLength

protected int engineGetMacLength()

Returns the length of the HMAC in bytes.

Specified by:

engineGetMacLength in class javax.crypto.MacSpi

Returns:

the HMAC length in bytes.

engineInit

protected void engineInit(java.security.Key key,
                          java.security.spec.AlgorithmParameterSpec params)
                   throws java.security.InvalidKeyException,
                          java.security.InvalidAlgorithmParameterException

Initializes this mac with a key and a set of algorithm parameters.

Specified by:

engineInit in class javax.crypto.MacSpi

Parameters:

key - the encryption key

params - the algorithm parameters

Throws:

java.security.InvalidKeyException - if the given key is inappropriate for initializing this mac

java.security.InvalidAlgorithmParameterException - if the given algorithm parameters are inappropriate for this mac

engineUpdate

protected void engineUpdate(byte input)

Processes the given byte.

Specified by:

engineUpdate in class javax.crypto.MacSpi

Parameters:

input - the input byte to be processed.

engineUpdate

protected void engineUpdate(byte[] input,
                            int offset,
                            int len)

Processes the first len bytes in input, starting at offset.

Specified by:

engineUpdate in class javax.crypto.MacSpi

Parameters:

input - the input buffer.

offset - the offset in input where the input starts.

len - the number of bytes to process.

engineDoFinal

protected byte[] engineDoFinal()

Completes the HMAC computation and resets the HMAC for further use, maintaining the secret key that the HMAC was initialized with.

Specified by:

engineDoFinal in class javax.crypto.MacSpi

Returns:

the HMAC result.

engineReset

protected void engineReset()

Resets the HMAC for further use, maintaining the secret key that the HMAC was initialized with.

Specified by:

engineReset in class javax.crypto.MacSpi

clone

public java.lang.Object clone()

Overrides:

clone in class javax.crypto.MacSpi