Class DnieCipherImpl

java.lang.Object

javax.crypto.CipherSpi

es.gob.jmulticard.jse.provider.rsacipher.DnieCipherImpl

public final class DnieCipherImpl
extends CipherSpi

RSA cipher implementation. Supports RSA en/decryption and signing/verifying using PKCS#1 v1.5 padding and without padding (raw RSA). Note that raw RSA is supported mostly for completeness and should only be used in rare cases. Objects should be instantiated by calling Cipher.getInstance() using the following algorithm names: . "RSA/ECB/PKCS1Padding" (or "RSA") for PKCS#1 padding. The mode (blocktype) is selected based on the en/decryption mode and public/private key used . "RSA/ECB/NoPadding" for rsa RSA. We only do one RSA operation per doFinal() call. If the application passes more data via calls to update() or doFinal(), we throw an IllegalBlockSizeException when doFinal() is called (see JCE API spec). Bulk encryption using RSA does not make sense and is not standardized. Note: RSA keys should be at least 512 bits long

Since:

1.5

Author:

Andreas Sterbenz

Constructor Summary

Constructors

Constructor	Description
DnieCipherImpl()	Construye un cifrador RSA para el DNIe.

Method Summary

Modifier and Type	Method	Description
protected byte[]	engineDoFinal(byte[] inData, int inOfs, int inLen)
protected int	engineDoFinal(byte[] inData, int inOfs, int inLen, byte[] out, int outOfs)
protected int	engineGetBlockSize()
protected byte[]	engineGetIV()
protected int	engineGetKeySize(Key key)
protected int	engineGetOutputSize(int inputLen)
protected AlgorithmParameters	engineGetParameters()
protected void	engineInit(int opmode, Key key, AlgorithmParameters params, SecureRandom rnd)
protected void	engineInit(int opmode, Key key, SecureRandom rnd)
protected void	engineInit(int opmode, Key key, AlgorithmParameterSpec params, SecureRandom rnd)
protected void	engineSetMode(String cipherMode)
protected void	engineSetPadding(String paddingName)
protected Key	engineUnwrap(byte[] wrappedKey, String algorithm, int type)
protected byte[]	engineUpdate(byte[] inData, int inOfs, int inLen)
protected int	engineUpdate(byte[] inData, int inOfs, int inLen, byte[] out, int outOfs)
protected byte[]	engineWrap(Key key)

Methods inherited from class CipherSpi

engineDoFinal, engineUpdate, engineUpdateAAD, engineUpdateAAD

Methods inherited from class Object

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

Constructor Details

DnieCipherImpl

public DnieCipherImpl()

Construye un cifrador RSA para el DNIe.

Method Details

engineSetMode

protected void engineSetMode(String cipherMode)
                      throws NoSuchAlgorithmException

Specified by:

engineSetMode in class CipherSpi

Throws:

NoSuchAlgorithmException

engineSetPadding

protected void engineSetPadding(String paddingName)
                         throws NoSuchPaddingException

Specified by:

engineSetPadding in class CipherSpi

Throws:

NoSuchPaddingException

engineGetBlockSize

protected int engineGetBlockSize()

Specified by:

engineGetBlockSize in class CipherSpi

engineGetOutputSize

protected int engineGetOutputSize(int inputLen)

Specified by:

engineGetOutputSize in class CipherSpi

engineGetIV

protected byte[] engineGetIV()

Specified by:

engineGetIV in class CipherSpi

engineGetParameters

protected AlgorithmParameters engineGetParameters()

Specified by:

engineGetParameters in class CipherSpi

engineInit

protected void engineInit(int opmode,
 Key key,
 SecureRandom rnd)
                   throws InvalidKeyException

Specified by:

engineInit in class CipherSpi

Throws:

InvalidKeyException

engineInit

protected void engineInit(int opmode,
 Key key,
 AlgorithmParameterSpec params,
 SecureRandom rnd)
                   throws InvalidKeyException,
InvalidAlgorithmParameterException

Specified by:

engineInit in class CipherSpi

Throws:

InvalidKeyException

InvalidAlgorithmParameterException

engineInit

protected void engineInit(int opmode,
 Key key,
 AlgorithmParameters params,
 SecureRandom rnd)
                   throws InvalidKeyException,
InvalidAlgorithmParameterException

Specified by:

engineInit in class CipherSpi

Throws:

InvalidKeyException

InvalidAlgorithmParameterException

engineUpdate

protected byte[] engineUpdate(byte[] inData,
 int inOfs,
 int inLen)

Specified by:

engineUpdate in class CipherSpi

engineUpdate

protected int engineUpdate(byte[] inData,
 int inOfs,
 int inLen,
 byte[] out,
 int outOfs)

Specified by:

engineUpdate in class CipherSpi

engineDoFinal

protected byte[] engineDoFinal(byte[] inData,
 int inOfs,
 int inLen)
                        throws BadPaddingException,
IllegalBlockSizeException

Specified by:

engineDoFinal in class CipherSpi

Throws:

BadPaddingException

IllegalBlockSizeException

engineDoFinal

protected int engineDoFinal(byte[] inData,
 int inOfs,
 int inLen,
 byte[] out,
 int outOfs)
                     throws ShortBufferException,
BadPaddingException,
IllegalBlockSizeException

Specified by:

engineDoFinal in class CipherSpi

Throws:

ShortBufferException

BadPaddingException

IllegalBlockSizeException

engineWrap

protected byte[] engineWrap(Key key)
                     throws InvalidKeyException,
IllegalBlockSizeException

Overrides:

engineWrap in class CipherSpi

Throws:

InvalidKeyException

IllegalBlockSizeException

engineUnwrap

protected Key engineUnwrap(byte[] wrappedKey,
 String algorithm,
 int type)
                    throws InvalidKeyException,
NoSuchAlgorithmException

Overrides:

engineUnwrap in class CipherSpi

Throws:

InvalidKeyException

NoSuchAlgorithmException

engineGetKeySize

protected int engineGetKeySize(Key key)
                        throws InvalidKeyException

Overrides:

engineGetKeySize in class CipherSpi

Throws:

InvalidKeyException