Differences

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--- pgpfan:minimalist [2021/01/31 21:20] – Wording. Typos. b.walzer
+++ pgpfan:minimalist [2021/06/15 19:44] – Achieve something by not doing it. b.walzer
@@ Line 21: / Line 21: @@
   * A Signal session requires the storage and maintenance of a lot of state information.
   * Signal normally uses a server based "prekey" system to deal with the case where a client is offline and thus is unable to negotiate.
-  * Signal achieves [[pgpfan:repudiability|deniability]] with a triple Diffie-Hellman key exchange.
+  * Signal achieves partial [[pgpfan:repudiability|deniability]] with a triple Diffie-Hellman key exchange. OpenPGP achieves [[pgpfan:anonymous|complete deniability]] by not signing the message in the first place.
   * Supporting the Signal protocol in practice requires a separate system to store and protect past messages((Currently (2021) this invokes an entire database system (SQLite) with an encryption extension to protect the secrecy of the old messages.)). Since this is at odds with [[forward_secrecy|forward secrecy]] such a system will end up with a system to delete old messages.