Notes on X3DH
Published:
Some notes on X3DH (Extended Triple Diffie-Hellman).
Introduction to the Diffie-Hellman key exchange
Published:
The Diffie-Hellman (DH) key exchange (and variants thereof) is widely used in many protocols (such as TLS, SSH, IKE (IPSec), Signal, etc.) to bootstrap some symmetric key material which may then be used to secure communication channel between two parties. This introduction focuses on the different ways the DH key exchange is used in practice in several protocols (especially TLS) and the impact of these different approaches on the security. This is intended as a prelude for the upcoming next episodes about how TLS works.
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