Using Flexbuilder to create an AIR app connected to Saleforce.com, how can I encrypt the local datastore?

I have created an Adobe AIR application that interfaces with Salesforce.com. The only drawback I have is that the data that is synced to the desktop is not encrypted. I can encrypt a database that I create locally, however, I am trying to encrypt the database that is created and maintained by t开发者_开发知识库he flexforforce toolkit. Thanks for any suggestions.

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J_A_X is correct, without access to the underlying code communicating to the database, it would be damn near impossible, however it appears the situation has changed.

AFAICT SalesBuilder is using a locally encrypted air database: http://coenraets.org/blog/2008/11/salesbuilder-15-with-new-air-15-database-encryption/. It appears the source code is available for this application, and thus a possibily that you might be able to pull the libraries this is using? Or perhaps the libraries you are using are in fact already encrypting the database?