com.ibm.crypto.provider
Class MD2withRSA

java.lang.Object
  java.security.SignatureSpi
      java.security.Signature
          com.ibm.crypto.provider.MD2withRSA

public final class MD2withRSA

extends Signature

This class implements MD2 with RSA

Field Summary

Fields inherited from class java.security.Signature

SIGN, state, UNINITIALIZED, VERIFY

Fields inherited from class java.security.SignatureSpi

appRandom

Constructor Summary

MD2withRSA()
Construct a blank RSA object.

Method Summary

protected Object	engineGetParameter(String key) Have to implement Signature's abstract method engineGetParameter to be a concrete class.
protected void	engineInitSign(PrivateKey privateKey) Initialize the RSA object with a RSA private key.
protected void	engineInitVerify(PublicKey publicKey) Initialize the RSA object with a RSA public key.
protected void	engineSetParameter(String key, Object param) Have to implement Signature's abstract method engineSetParameter to be a concrete class.
protected byte[]	engineSign() Get message digest for all the data thus far updated, then sign the message digest.
protected void	engineUpdate(byte b) Update a byte to be signed or verified.
protected void	engineUpdate(byte[] data, int off, int len) Update an array of bytes to be signed or verified.
protected boolean	engineVerify(byte[] signature) Verify the signature (compare the result with the message digest).

Methods inherited from class java.security.Signature

clone, getAlgorithm, getInstance, getInstance, getInstance, getParameter, getParameters, getProvider, initSign, initSign, initVerify, initVerify, setParameter, setParameter, sign, sign, toString, update, update, update, verify, verify

Methods inherited from class java.security.SignatureSpi

engineGetParameters, engineInitSign, engineSetParameter, engineSign, engineVerify

Methods inherited from class java.lang.Object

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

Constructor Detail

MD2withRSA

public MD2withRSA()

Construct a blank RSA object. It must be initialized before being usable for signing or verifying.

Method Detail

engineSetParameter

protected void engineSetParameter(String key,
                                  Object param)

Have to implement Signature's abstract method engineSetParameter to be a concrete class.

engineGetParameter

protected Object engineGetParameter(String key)

Have to implement Signature's abstract method engineGetParameter to be a concrete class.

engineInitSign

protected void engineInitSign(PrivateKey privateKey)
                       throws InvalidKeyException

Initialize the RSA object with a RSA private key.

Parameters:

privateKey - the RSA private key

Throws:

InvalidKeyException - if the key is not a valid RSA private key.

engineInitVerify

protected void engineInitVerify(PublicKey publicKey)
                         throws InvalidKeyException

Initialize the RSA object with a RSA public key.

Parameters:

publicKey - the RSA public key

Throws:

InvalidKeyException - if the key is not a valid RSA public key.

engineUpdate

protected void engineUpdate(byte b)

Update a byte to be signed or verified.

Parameters:

b - the byte to updated.

engineUpdate

protected void engineUpdate(byte[] data,
                            int off,
                            int len)

Update an array of bytes to be signed or verified.

Parameters:

data - the bytes to be updated.

engineSign

protected byte[] engineSign()
                     throws SignatureException

Get message digest for all the data thus far updated, then sign the message digest.

Returns:

the signature.

Throws:

SignatureException - if the signature object was not properly initialized, or if another exception occurs.

engineVerify

protected boolean engineVerify(byte[] signature)
                        throws SignatureException

Verify the signature (compare the result with the message digest).

Throws:

SignatureException - if the signature object was not properly initialized, or if another exception occurs.