Dymo: Tracking Dynamic Code Identity

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Executive Summary

Code identity is a primitive that allows an entity to recognize a known, trusted application as it executes. This primitive supports trusted computing mechanisms such as sealed storage and remote attestation. Unfortunately, there is a generally acknowledged limitation in the implementation of current code identity mechanisms in that they are fundamentally static. That is, code identity is captured at program load-time and, thus, does not reflect the dynamic nature of executing code as it changes over the course of its run-time.

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