demo.smime.basic

Class CMSStreamDemo

java.lang.Object

demo.smime.basic.CMSStreamDemo

public class CMSStreamDemo
extends java.lang.Object

This class shows the usage of the SMimeSigned and SMimeEncrypted classes. These classes can be used to create/parse signed and/or encrypted CMS messages. This demo does not use the Jakarta Mail API.

See Also:

SMimeSigned, SMimeEncrypted

Constructor Summary

Constructors

Constructor and Description
CMSStreamDemo() Empty default constructor.

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.String[] argv) The main method.
void	setupCertificates() Reads the required keys and certificates from the demo keystore.
void	start() Starts the demo.
void	testSMimeAuthEncrypted(iaik.asn1.structures.AlgorithmID contentEA, iaik.asn1.structures.AlgorithmID keyWrapAlg, int keyLength, int recipientIndex) Uses class SMimeAuthEncrypted to authenticated encrypt some data, encode it, and finally parses the encoding to decrypt and recover the original content.
void	testSMimeEncrypted(iaik.asn1.structures.AlgorithmID contentEA, iaik.asn1.structures.AlgorithmID keyWrapAlg, int keyLength, int recipientIndex) Uses class SMimeEncrypted to encrypt some data, encode it, and finally parses the encoding to decrypt and recover the original content.
void	testSMimeSigned(int mode) Uses class SMimeSigned to sign some data, encode it, and finally parses the encoding to verify the signature.
void	testSMimeSignedAndAuthEncrypted(iaik.asn1.structures.AlgorithmID contentEA, iaik.asn1.structures.AlgorithmID keyWrapAlg, int keyLength, int recipientIndex) Uses class SMimeSigned and class SMimeAuthEncrypted to sign and authenticated encrypt some data, encode it, and finally parses the encoding to decrypt and recover the original content and verify the signature.
void	testSMimeSignedAndEncrypted(iaik.asn1.structures.AlgorithmID contentEA, iaik.asn1.structures.AlgorithmID keyWrapAlg, int keyLength, int recipientIndex) Uses class SMimeSigned and class SMimeEncrypted to sign and encrypt some data, encode it, and finally parses the encoding to decrypt and recover the original content and verify the signature.

Methods inherited from class java.lang.Object

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

Constructor Detail

CMSStreamDemo

public CMSStreamDemo()

Empty default constructor.

Method Detail

setupCertificates

public void setupCertificates()
                       throws java.lang.Exception

Reads the required keys and certificates from the demo keystore.

Throws:

java.lang.Exception - if some error occurs when reading from the keystore

testSMimeEncrypted

public void testSMimeEncrypted(iaik.asn1.structures.AlgorithmID contentEA,
                               iaik.asn1.structures.AlgorithmID keyWrapAlg,
                               int keyLength,
                               int recipientIndex)
                        throws java.lang.Exception

Uses class SMimeEncrypted to encrypt some data, encode it, and finally parses the encoding to decrypt and recover the original content.

Parameters:

contentEA - the content encryption algorithm to be used

keyWrapAlg - the key wrap algorithm to be used for encrypting the temporary content encryption key

keyLength - the length of the content encryption key to be created and used

recipientIndex - the index into the recipientInfos field indicating for which recipient the message shall be decrypted

Throws:

java.lang.Exception - if some error occurs

testSMimeSigned

public void testSMimeSigned(int mode)
                     throws java.lang.Exception

Uses class SMimeSigned to sign some data, encode it, and finally parses the encoding to verify the signature.

Parameters:

mode - either implicit or explicit to indicate whether the content shall be included in the signature or transmitted out-of-band

Throws:

java.lang.Exception - if some error occurs

testSMimeAuthEncrypted

public void testSMimeAuthEncrypted(iaik.asn1.structures.AlgorithmID contentEA,
                                   iaik.asn1.structures.AlgorithmID keyWrapAlg,
                                   int keyLength,
                                   int recipientIndex)
                            throws java.lang.Exception

Uses class SMimeAuthEncrypted to authenticated encrypt some data, encode it, and finally parses the encoding to decrypt and recover the original content.

Parameters:

contentEA - the content-authenticated encryption algorithm to be used

keyWrapAlg - the key wrap algorithm to be used for encrypting the temporary content encryption key

keyLength - the length of the content encryption key to be created and used

recipientIndex - the index into the recipientInfos field indicating for which recipient the message shall be decrypted

Throws:

java.lang.Exception - if some error occurs

testSMimeSignedAndEncrypted

public void testSMimeSignedAndEncrypted(iaik.asn1.structures.AlgorithmID contentEA,
                                        iaik.asn1.structures.AlgorithmID keyWrapAlg,
                                        int keyLength,
                                        int recipientIndex)
                                 throws java.lang.Exception

Uses class SMimeSigned and class SMimeEncrypted to sign and encrypt some data, encode it, and finally parses the encoding to decrypt and recover the original content and verify the signature.

Parameters:

contentEA - the content encryption algorithm to be used

keyWrapAlg - the key wrap algorithm to be used for encrypting the temporary content encryption key

keyLength - the length of the content encryption key to be created and used

recipientIndex - the index into the recipientInfos field indicating for which recipient the message shall be decrypted

Throws:

java.lang.Exception - if some error occurs

testSMimeSignedAndAuthEncrypted

public void testSMimeSignedAndAuthEncrypted(iaik.asn1.structures.AlgorithmID contentEA,
                                            iaik.asn1.structures.AlgorithmID keyWrapAlg,
                                            int keyLength,
                                            int recipientIndex)
                                     throws java.lang.Exception

Uses class SMimeSigned and class SMimeAuthEncrypted to sign and authenticated encrypt some data, encode it, and finally parses the encoding to decrypt and recover the original content and verify the signature.

Parameters:

contentEA - the content-authenticated encryption algorithm to be used

keyWrapAlg - the key wrap algorithm to be used for encrypting the temporary content encryption key

keyLength - the length of the content encryption key to be created and used

recipientIndex - the index into the recipientInfos field indicating for which recipient the message shall be decrypted

Throws:

java.lang.Exception - if some error occurs

start

public void start()

Starts the demo.

main

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

The main method. Reads the certificates and the private key and then starts the demos.

Throws:

java.io.IOException