Anti-virus method for scrambled digital content

摘要

In accordance with an aspect of the invention, a technique for software virus prevention is to scramble code segments to produce a different layout (but equivalent function) on different machines.
A virtual disk design offers a mechanism to map from logical content hash to physical disk block. Given a means to convert between machine-specific code layout and a canonical form, the content mapping scheme disclosed herein may be used to retrieve an equivalent copy of a code block from local media that can be canonicalized and re-scrambled for use on a virtual machine.