TRANSPARENT ENCRYPTION AND DECRYPTION WITH ALGORITHM INDEPENDENT CRYPTOGRAPHIC ENGINE THAT ALLOWS FOR CONTAINERIZATION OF ENCRYPTED FILES

摘要

Cryptographic methods and system are disclosed. The cryptographic methods provide transparent encryption and decryption of documents in an electronic document management system (330). The cryptographic system adds a software module to an electronic document management system which traps file I/O events and performs cryptographic functions on the relevant documents before passing control back to the electronic document management system. The encryption process allows a portion of a document to be encrypted, placed in a container, and then be represented by an object linking and embedding ("OLE") container object or other representation supported by the file.