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NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
gnutls_reauth(3) gnutls gnutls_reauth(3)
gnutls_reauth - API function
#include <gnutls/gnutls.h>
int gnutls_reauth(gnutls_session_t session, unsigned int flags);
gnutls_session_t session
is a gnutls_session_t type.
unsigned int flags
must be zero
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 advertise post-handshake auth, it always fails with
GNUTLS_E_INVALID_REQUEST. The verification of the received peers
certificate is delegated to the session 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_certificate_server_set_request() must be called setting
expectations for the received 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, certificate credentials must be set to the session prior to
calling this function.
GNUTLS_E_SUCCESS on a successful authentication, otherwise a negative
error code.
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
Copyright © 2001-2019 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
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https://www.gnutls.org/manual/
This page is part of the GnuTLS (GnuTLS Transport Layer Security
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gnutls 3.6.9 gnutls_reauth(3)