Yeah my question was whether the CRYSTALS-KYBER key exchange is based upon a similar ["secret paint mixing"](https://en.wikipedia.org/wiki/Diffie–Hellman_key_exchange#/media/File:Diffie-Hellman_Key_Exchange.svg) technique as DH or whether my knowledge of how existing crypto systems work is totally useless in this realm

shyfire

Diffie Hellman isn't a public key encryption scheme, it's a 

 protocol using public key cryptography. These algos are an alternative to RSA or elliptic curve. Why they have separate encryption and signing algorithms I can only guess. They list one of the schemes as a key establishment protocol a.k.a. key exchange, which leads you to believe its optimized for a very small amount of data, perhaps less than a few hundred bytes for establishing a symmetric key which is immune to quantum

bitcoin

NIST Announces 4 Post-Quantum Cryptography Candidates to be Standardized, Plus New Fourth-Round Candidates

CypherPoet

Diffie Hellman isn't a public key encryption scheme, it's a [key exchange](https://en.m.wikipedia.org/wiki/Key_exchange) protocol using public key cryptography. These algos are an alternative to RSA or elliptic curve. Why they have separate encryption and signing algorithms I can only guess. They list one of the schemes as a key establishment protocol a.k.a. key exchange, which leads you to believe its optimized for a very small amount of data, perhaps less than a few hundred bytes for establishing a symmetric key which is immune to quantum