demo.cms.encryptedData

Class EncryptedDataDemo

java.lang.Object

demo.cms.encryptedData.EncryptedDataDemo

public class EncryptedDataDemo
extends java.lang.Object

Demonstrates the usage of class EncryptedDataStream and EncryptedData for encrypting data using the CMS type EncryptedData.

Constructor Summary

Constructors

Constructor and Description
EncryptedDataDemo() Default constructor.

Method Summary

Modifier and Type	Method and Description
byte[]	createEncryptedData(byte[] message, iaik.asn1.structures.AlgorithmID pbeAlgorithm, char[] password) Creates a CMS EncryptedData message.
byte[]	createEncryptedDataStream(byte[] message, iaik.asn1.structures.AlgorithmID pbeAlgorithm, char[] password) Creates a CMS EncryptedDataStream message.
byte[]	getEncryptedData(byte[] encoding, char[] password) Decrypts the PBE-encrypted content of the given CMS EncryptedData object using the specified password and returns the decrypted (= original) message.
byte[]	getEncryptedDataStream(byte[] encoding, char[] password) Decrypts the PBE-encrypted content of the given CMS EncryptedData object using the specified password and returns the decrypted (= original) message.
static void	main(java.lang.String[] argv) Maim method.
void	start() Starts the tests.

Methods inherited from class java.lang.Object

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

Constructor Detail

EncryptedDataDemo

public EncryptedDataDemo()

Default constructor.

Method Detail

createEncryptedDataStream

public byte[] createEncryptedDataStream(byte[] message,
                                        iaik.asn1.structures.AlgorithmID pbeAlgorithm,
                                        char[] password)
                                 throws iaik.cms.CMSException,
                                        java.io.IOException

Creates a CMS EncryptedDataStream message.

The supplied content is PBE-encrypted using the specified password.

Parameters:

message - the message to be encrypted, as byte representation

pbeAlgorithm - the PBE algorithm to be used

password - the password

Returns:

the DER encoding of the EncryptedData object just created

Throws:

iaik.cms.CMSException - if the EncryptedData object cannot be created

java.io.IOException - if an I/O error occurs

getEncryptedDataStream

public byte[] getEncryptedDataStream(byte[] encoding,
                                     char[] password)
                              throws iaik.cms.CMSException,
                                     java.io.IOException

Decrypts the PBE-encrypted content of the given CMS EncryptedData object using the specified password and returns the decrypted (= original) message.

Parameters:

encoding - the EncryptedData object as DER encoded byte array

password - the password to decrypt the message

Returns:

the recovered message, as byte array

Throws:

iaik.cms.CMSException - if the message cannot be recovered

java.io.IOException - if an I/O error occurs

createEncryptedData

public byte[] createEncryptedData(byte[] message,
                                  iaik.asn1.structures.AlgorithmID pbeAlgorithm,
                                  char[] password)
                           throws iaik.cms.CMSException,
                                  java.io.IOException

Creates a CMS EncryptedData message.

The supplied content is PBE-encrypted using the specified password.

Parameters:

message - the message to be encrypted, as byte representation

pbeAlgorithm - the PBE algorithm to be used

password - the password

Returns:

the DER encoding of the EncryptedData object just created

Throws:

iaik.cms.CMSException - if the EncryptedData object cannot be created

java.io.IOException - if an I/O error occurs

getEncryptedData

public byte[] getEncryptedData(byte[] encoding,
                               char[] password)
                        throws iaik.cms.CMSException,
                               java.io.IOException

Decrypts the PBE-encrypted content of the given CMS EncryptedData object using the specified password and returns the decrypted (= original) message.

Parameters:

encoding - the DER encoded EncryptedData object

password - the password to decrypt the message

Returns:

the recovered message, as byte array

Throws:

iaik.cms.CMSException - if the message cannot be recovered

java.io.IOException - if an I/O error occurs

start

public void start()

Starts the tests.

main

public static void main(java.lang.String[] argv)
                 throws java.lang.Exception

Maim method.

Throws:

java.lang.Exception