tree d9f3b1e68e5f58f252822c76af6b3dff3e2b11f4
parent a028c5bbd82d1d46a4fae5b374dfe7077cc5527a
author Hanno Becker <hanno.becker@arm.com> 1549370946 +0000
committer Hanno Becker <hanno.becker@arm.com> 1551191889 +0000

Introduce helper to check for no-CRT notification from client

This commit introduces a server-side static helper function
`ssl_srv_check_client_no_crt_notification()`, which checks if
the message we received during the incoming certificate state
notifies the server of the lack of certificate on the client.

For SSLv3, such a notification comes as a specific alert,
while for all other TLS versions, it comes as a `Certificate`
handshake message with an empty CRT list.