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Securing communications is a challenging task. A first attempt at security involves learning basic cryptography, and applying encryption algorithms to make messages unintelligible to adversaries. However, rarely is the task of securing a message exchange so simple. When one steps back and contemplates how to secure the exchange of communications, one realizes that the challenge is fundamentally one of building a complete solution. For example, one must ensure that all entities involved have proper and authenticated cryptographic material, or one must ensure that one verifiably knows to whom one is communicating, or one must understand how the communication process takes place so as to make certain there are no vulnerabilities introduced by the communication process itself. This last issue, namely that security methods are often built without consideration to how communication takes place …