com.entrust.toolkit.xencrypt.algorithms

Class EncryptionAlgorithmImplRSA

java.lang.Object

com.entrust.toolkit.xencrypt.algorithms.EncryptionAlgorithmImplRSA

All Implemented Interfaces:

EncryptionAlgorithm

public final class EncryptionAlgorithmImplRSA
extends java.lang.Object
implements EncryptionAlgorithm

Implements the EncryptionAlgorithm interface, making the Toolkit's RSA implementations available for use in XML encryption.

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(byte[] toBeDecrypted) Decrypts a byte array.
byte[]	encrypt(byte[] toBeEncrypted) Encrypts a byte array.
byte[]	getEncoded() This method is required to implement the EncryptionAlgorithm interface, but it pertains to symmetric ciphers, so here it does nothing.
java.lang.String	getIVparameters() This method is required to implement the EncryptionAlgorithm interface, but asymmetric ciphers have no IV parameters, so this method does nothing.
URI	getURI() Gets the algorithm identifier, which is a URI.
void	initDecrypt(byte[] keyBytes, byte[] iv) This method is required to implement the EncryptionAlgorithm interface, but it does nothing, since RSA is an asymmetric cipher.
void	initEncrypt() This method is required to implement the EncryptionAlgorithm interface, but it does nothing, since RSA is an asymmetric cipher.
void	setPrivateKey(java.security.PrivateKey decryptionKey) Sets the private key to be used for decrypting.
void	setPublicKey(java.security.PublicKey encryptionKey) Sets the public key to be used for encryption.
void	setURI(URI uri) Sets the algorithm identifier, which is a URI.

Methods inherited from class java.lang.Object

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

Method Detail

initEncrypt

public void initEncrypt()

This method is required to implement the EncryptionAlgorithm interface, but it does nothing, since RSA is an asymmetric cipher.

Specified by:

initEncrypt in interface EncryptionAlgorithm

initDecrypt

public void initDecrypt(byte[] keyBytes,
                        byte[] iv)

This method is required to implement the EncryptionAlgorithm interface, but it does nothing, since RSA is an asymmetric cipher.

Specified by:

initDecrypt in interface EncryptionAlgorithm

Parameters:

keyBytes - the key material for a secret key

iv - initialization vector to be used in the decryption operation

getEncoded

public byte[] getEncoded()

This method is required to implement the EncryptionAlgorithm interface, but it pertains to symmetric ciphers, so here it does nothing.

Specified by:

getEncoded in interface EncryptionAlgorithm

Returns:

null

See Also:

EncryptionAlgorithm

getURI

public URI getURI()

Gets the algorithm identifier, which is a URI.

Specified by:

getURI in interface EncryptionAlgorithm

Returns:

the algorithm identifier

See Also:

XMLEConstants.ALGORITHM_RSA, XMLEConstants.ALGORITHM_RSA_OAEP

setURI

public void setURI(URI uri)
            throws EncryptionAlgorithmException

Sets the algorithm identifier, which is a URI.

Specified by:

setURI in interface EncryptionAlgorithm

Parameters:

uri - a URI reference that identifies the algorithm.

Throws:

EncryptionAlgorithmException

See Also:

XMLEConstants.ALGORITHM_RSA, XMLEConstants.ALGORITHM_RSA_OAEP

getIVparameters

public java.lang.String getIVparameters()

This method is required to implement the EncryptionAlgorithm interface, but asymmetric ciphers have no IV parameters, so this method does nothing.

Specified by:

getIVparameters in interface EncryptionAlgorithm

Returns:

null

decrypt

public byte[] decrypt(byte[] toBeDecrypted)
               throws EncryptionAlgorithmException

Decrypts a byte array.

Specified by:

decrypt in interface EncryptionAlgorithm

Parameters:

toBeDecrypted - a byte[] containing data to be decrypted

Returns:

a byte[] that contains the decrypted plaintext

Throws:

EncryptionAlgorithmException

encrypt

public byte[] encrypt(byte[] toBeEncrypted)
               throws EncryptionAlgorithmException

Encrypts a byte array.

Specified by:

encrypt in interface EncryptionAlgorithm

Parameters:

toBeEncrypted - a byte[] containing plaintext to be encrypted

Returns:

a byte[] that contains the encryption of the plaintext

Throws:

EncryptionAlgorithmException

setPrivateKey

public void setPrivateKey(java.security.PrivateKey decryptionKey)
                   throws EncryptionAlgorithmException

Sets the private key to be used for decrypting.

Specified by:

setPrivateKey in interface EncryptionAlgorithm

Parameters:

decryptionKey - the private key to be used for decrypting

Throws:

EncryptionAlgorithmException

See Also:

PrivateKey

setPublicKey

public void setPublicKey(java.security.PublicKey encryptionKey)
                  throws EncryptionAlgorithmException

Sets the public key to be used for encryption.

The key must be an instance of class java.security.interfaces.RSAPublicKey.

Specified by:

setPublicKey in interface EncryptionAlgorithm

Parameters:

encryptionKey - the public key to be used for encrypting

Throws:

EncryptionAlgorithmException

See Also:

PublicKey