Draft Transport Layer Security (TLS) Cached Information Extension
Transport Layer Security (TLS) handshakes often include fairly static
information, such as the server certificate and a list of trusted
Certification Authorities (CAs). This information can be of
considerable size, particularly if the server certificate is bundled
with a complete certificate path (including all intermediary
certificates up to the trust anchor public key).
This document defines an extension that omits the exchange of already
available information. The TLS client informs a server of cached
information, for example from a previous TLS handshake, allowing the
server to omit the already available information.