The invention provides for encrypting electronic information such as a document so that only users with permission may access the document in decrypted form. The process of encrypting the information includes selecting a set of policies as to who may access the information and under what conditions....http://www.google.se/patents/US6289450?utm_source=gb-gplus-sharePatent US6289450 - Information security architecture for encrypting documents for remote access while maintaining access control
