File Encryption Plugin 2.0

Be aware of the risk : the certificate must be available and backuped ! If it is lost, the content of the ciphered file is lost.

Be aware of the limitation : someone accessing to the total file system might get the certificate and decipher the files anyway.

Be aware of the limitation : All processing on document content will be desactivated (like index, viewer, pdf convert, ...)

Besides : ciphering files may cause performance issues. Keep it for little sensible files, not for big videos or zip files.

Encryption policy

The algorythme used to cipher/decipher the files is AES 256 CBC.

Download the JCE Unlimited Strength Policy Files for your JDK at the Oracle Java SE Download Page.

Add in %JDK_HOME%/jre/lib/security the following jars :

• local_policy.jar
• US_export_policy.jar

Servlet Filter to decipher the files

Manually edit and modify the WEB-INF/web.xml file to add the content of WEB-INF/web.xml.jcmsplugin.fileencryption.delta .

Create the certificate

Create a PKCS#12 (PKCS#12 on Wikipedia) file with a private key optionnaly protected by a password.

To create a PKCS#12, you may find resources on Google such that this on.

Note that a PKCS#12 must be generated by a CA. You may either create your own auto-signed CA, or by a PKCS#12 at a known CA.

The following tutorial is a good introduction to cryptograph with Bouncy Castle (in french).

Configure the plugin

In the plugin administration interface, set the path in the file system to the PKCS#12 file and optionnaly the password, and restart the webapp.

In the plugin's properties, you can also limit documents that are cipher-able by file extension.