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gnutls_reauth(3) gnutls gnutls_reauth(3) NAME gnutls_reauth - API function SYNOPSIS #include <gnutls/gnutls.h> int gnutls_reauth(gnutls_session_t session, unsigned int flags); ARGUMENTS gnutls_session_t session is a gnutls_session_t type. unsigned int flags must be zero DESCRIPTION This function performs the post-handshake authentication for TLS 1.3. The post-handshake authentication is initiated by the server by calling this function. Clients respond when GNUTLS_E_REAUTH_REQUEST has been seen while receiving data. The non-fatal errors expected by this function are: GNUTLS_E_INTERRUPTED, GNUTLS_E_AGAIN, as well as GNUTLS_E_GOT_APPLICATION_DATA when called on server side. The former two interrupt the authentication procedure due to the transport layer being interrupted, and the latter because there were pending data prior to peer initiating the re-authentication. The server should read/process that data as unauthenticated and retry calling gnutls_reauth(). When this function is called under TLS1.2 or earlier or the peer didn't ad- vertise post-handshake auth, it always fails with GNUTLS_E_INVALID_REQUEST. The verification of the received peers certificate is delegated to the ses- sion or credentials verification callbacks. A server can check whether post handshake authentication is supported by the client by checking the session flags with gnutls_session_get_flags(). Prior to calling this function in server side, the function gnutls_certifi- cate_server_set_request() must be called setting expectations for the re- ceived certificate (request or require). If none are set this function will return with GNUTLS_E_INVALID_REQUEST. Note that post handshake authentication is available irrespective of the initial negotiation type (PSK or certificate). In all cases however, cer- tificate credentials must be set to the session prior to calling this func- tion. RETURNS GNUTLS_E_SUCCESS on a successful authentication, otherwise a negative error code. REPORTING BUGS Report bugs to <bugs@gnutls.org>. Home page: https://www.gnutls.org COPYRIGHT Copyright (C) 2001-2023 Free Software Foundation, Inc., and others. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. SEE ALSO The full documentation for gnutls is maintained as a Texinfo manual. If the /usr/local/share/doc/gnutls/ directory does not contain the HTML form visit https://www.gnutls.org/manual/ gnutls 3.8.13 gnutls_reauth(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | REPORTING BUGS | COPYRIGHT | SEE ALSO
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