demo.smime.ecc
Class SMimeEccDemo

java.lang.Object
  demo.smime.ecc.SMimeEccDemo

public class SMimeEccDemo
extends java.lang.Object

This class demonstrates the usage of the IAIK S/MIME implementation to create ECDSA (with SHA1, SHA224, SHA256, SHA384, SHA512, RIPEMD160) signed and/or ECDH based encrypted S/MIMEv3 messages and how to parse them and verify the signatures and decrypt the content, respectively.

Any keys/certificates required for this demo are read from a keystore file "cmsecc.keystore" located in your current working directory. If the keystore file does not exist you can create it by running the SetupCMSEccKeyStore program.

Additionally to iaik_cms.jar you also must have iaik_jce_(full).jar (IAIK-JCE, https://sic.tech/products/core-crypto-toolkits/jca-jce/), and iaik_eccelarate.jar (IAIK-ECCelerate^TM, https://sic.tech/products/core-crypto-toolkits/eccelerate/) in your classpath.

To run this demo the following packages are required:

• iaik_cms.jar
• iaik_jce(_full).jar (IAIK-JCE Core Crypto Library).
• iaik_eccelerate.jar (IAIK ECC Library).
• mail.jar (JavaMail API).
• activation.jar (Java Activation Framework; required for JDK versions < 1.6).

See Also:

SetupCMSEccKeyStore, SignedContent, EncryptedContent

Constructor Summary

SMimeEccDemo()
Default constructor.

Method Summary

javax.mail.Message	createEncryptedMessage(javax.mail.Session session, iaik.asn1.structures.AlgorithmID contentEA, int keyLength, iaik.asn1.structures.AlgorithmID keyEA, iaik.asn1.structures.AlgorithmID keyWrapAlgorithm, int kekLength) Creates an encrypted message.
javax.mail.Message	createMessage(javax.mail.Session session, java.lang.String subject) Creates a MIME message container with the given subject for the given session.
javax.mail.Message	createSignedAndEncryptedMessage(javax.mail.Session session, javax.activation.DataHandler dataHandler, boolean implicit, iaik.asn1.structures.AlgorithmID hashAlgorithm, iaik.asn1.structures.AlgorithmID signatureAlgorithm) Creates a signed and encrypted message.
javax.mail.Message	createSignedMessage(javax.mail.Session session, javax.activation.DataHandler dataHandler, boolean implicit, iaik.asn1.structures.AlgorithmID hashAlgorithm, iaik.asn1.structures.AlgorithmID signatureAlgorithm) Creates a signed message.
static void	main(java.lang.String[] argv) The main method.
void	start() Starts the demo.

Methods inherited from class java.lang.Object

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

Constructor Detail

SMimeEccDemo

public SMimeEccDemo()

Default constructor. Reads certificates and keys from the demo keystore.

Method Detail

start

public void start()
           throws java.io.IOException

Starts the demo.

Throws:

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

createMessage

public javax.mail.Message createMessage(javax.mail.Session session,
                                        java.lang.String subject)
                                 throws javax.mail.MessagingException

Creates a MIME message container with the given subject for the given session.

Parameters:

session - the mail session

subject - the subject of the message

Returns:

the MIME message with FROM, TO, DATE and SUBJECT headers (without content)

Throws:

javax.mail.MessagingException - if the message cannot be created

createSignedAndEncryptedMessage

public javax.mail.Message createSignedAndEncryptedMessage(javax.mail.Session session,
                                                          javax.activation.DataHandler dataHandler,
                                                          boolean implicit,
                                                          iaik.asn1.structures.AlgorithmID hashAlgorithm,
                                                          iaik.asn1.structures.AlgorithmID signatureAlgorithm)
                                                   throws javax.mail.MessagingException

Creates a signed and encrypted message.

Parameters:

session - the mail session

dataHandler - the content of the message to be signed and encrypted

implicit - whether to use implicit (application/pkcs7-mime) or explicit (multipart/signed) signing

hashAlgorithm - the hash algorithm to be used

signatureAlgorithm - the signature algorithm to be used

Returns:

the signed and encrypted message

Throws:

javax.mail.MessagingException - if an error occurs when creating the message

createSignedMessage

public javax.mail.Message createSignedMessage(javax.mail.Session session,
                                              javax.activation.DataHandler dataHandler,
                                              boolean implicit,
                                              iaik.asn1.structures.AlgorithmID hashAlgorithm,
                                              iaik.asn1.structures.AlgorithmID signatureAlgorithm)
                                       throws javax.mail.MessagingException

Creates a signed message.

Parameters:

session - the mail session

dataHandler - the content of the message to be signed

implicit - whether to use implicit (application/pkcs7-mime) or explicit (multipart/signed) signing

hashAlgorithm - the hash algorithm to be used

signatureAlgorithm - the signature algorithm to be used

Returns:

the signed message

Throws:

javax.mail.MessagingException - if an error occurs when creating the message

createEncryptedMessage

public javax.mail.Message createEncryptedMessage(javax.mail.Session session,
                                                 iaik.asn1.structures.AlgorithmID contentEA,
                                                 int keyLength,
                                                 iaik.asn1.structures.AlgorithmID keyEA,
                                                 iaik.asn1.structures.AlgorithmID keyWrapAlgorithm,
                                                 int kekLength)
                                          throws javax.mail.MessagingException

Creates an encrypted message.

Parameters:

session - the mail session

contentEA - the content encryption algorithm to be used

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

Returns:

the encrypted message

Throws:

javax.mail.MessagingException - if an error occurs when creating the message

main

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

The main method.

Throws:

java.lang.Exception