XmlEncryptor - An XML Encryption Demonstrator

Author: Ed Simon

XmlEncryptor demonstrates how to encrypt XML nodes within the DOM. In this version, the types of nodes that are encrypted are

• whole elements - (the element's tags and its contents)
• element content - just the content of an element
• attribute values - the values of specific attributes

To run XmlEncryptor,

1. Copy the XmlEncryptor.java and XmlEncryptionTest.xml files in a folder.
2. Install JCE 1.2.1 (or higher) from "http://java.sun.com" and the Xerces parser from "http://xml.apache.org".
3. Compile XmlEncryptor.java using the classpath illustrated here:

   javac -classpath d:\xerces-1_2_0\xerces.jar;d:\jce1.2.1\lib\jce1_2_1.jar;d:\jce1.2.1\lib\sunjce_provider.jar; XmlEncryptor.java
   

4. Run the XmlEncryptor program using the classpath illustrated here:

   java -cp .;d:\xerces-1_2_0\xerces.jar;d:\jce1.2.1\lib\jce1_2_1.jar;d:\jce1.2.1\lib\sunjce_provider.jar; XmlEncryptor
   

When run, XmlEncryptor creates two files: XmlEncryptionTestEncryptedNodes.xml and XmlEncryptionTestDecryptedNodes.xml.

• XmlEncryptionTestEncryptedNodes.xml shows the result of encrypting specific nodes in XmlEncryptionTest.xml
• XmlEncryptionTestDecryptedNodes.xml is the result of decrypting XmlEncryptionTestEncryptedNodes.xml's encrypted nodes. (XmlEncryptionTestDecryptedNodes.xml should be identical to XmlEncryptionTest.xml.)

Please see the source code of XmlEncryptor.java for descriptions of the coding details.

Note: XmlEncryptor is intended to serve solely as a point of discussion for the XML Encryption Work Group and will only be added to and maintained according to the needs of the Work Group.