!!! Overview
[{$pagename}] is defined in [RFC 5869] which specifies a simple HMAC-based [HMAC] [KDF], named [HKDF], which can be used as a building block in various protocols and applications, and is already used in several IETF protocols, including [IKEv2], [PANA], and [EAP-AKA]

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]