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SPAC (Secure Privacy, Authenticity, and Confidentiality): Privacy Given Strongest Authenticity and Confidentiality

Implementer informative

Maintainer: Samuel M. Smith · 2023-06-17 · checked 2026-10-15

A 76-slide deck by Samuel M. Smith dated 2023/06/17 presenting SPAC (Secure Privacy, Authenticity, and Confidentiality), a strawman protocol design that starts from the PAC theorem and ToIP (Trust over IP) design goals. It covers strong authenticity and IND-CCA2 confidentiality, ESSR (encrypt sender, sign receiver) messages, relationship graphs, direct and intermediated protocol forms, and privacy threats.

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