This document introduces the term “static (elliptic curve) Diffie-Hellman ephemeral”,
generally written as “static (EC)DHE”, to refer to long-lived finite field or elliptic curve
Diffie-Hellman keys or key pairs that will be used with the TLS 1.3 ephemeral ciphersuites
to negotiate traffic keys for multiple TLS sessions.
For clarity, this document also introduces the term “ephemeral (elliptic curve) Diffie-
Hellman ephemeral”, generally written as “ephemeral (EC)DHE”, to denote finite field or
elliptic curve Diffie-Hellman keys or key pairs that will be used with the TLS 1.3 ephemeral
ciphersuites to negotiate traffic keys for a single TLS sessions.
From Tim Polk:
1.1. Terminology
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This document introduces the term “static (elliptic curve) Diffie-Hellman ephemeral”, generally written as “static (EC)DHE”, to refer to long-lived finite field or elliptic curve Diffie-Hellman keys or key pairs that will be used with the TLS 1.3 ephemeral ciphersuites to negotiate traffic keys for multiple TLS sessions.
For clarity, this document also introduces the term “ephemeral (elliptic curve) Diffie- Hellman ephemeral”, generally written as “ephemeral (EC)DHE”, to denote finite field or elliptic curve Diffie-Hellman keys or key pairs that will be used with the TLS 1.3 ephemeral ciphersuites to negotiate traffic keys for a single TLS sessions.