from small one page howto to huge articles all in one place
 

search text in:





Poll
Which kernel version do you use?





poll results

Last additions:
using iotop to find disk usage hogs

using iotop to find disk usage hogs

words:

887

views:

186343

userrating:

average rating: 1.7 (102 votes) (1=very good 6=terrible)


May 25th. 2007:
Words

486

Views

250360

why adblockers are bad


Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

words:

161

views:

137535

userrating:

average rating: 1.4 (42 votes) (1=very good 6=terrible)


April, 26th. 2006:

Druckversion
You are here: manpages





SSL_CTX_use_psk_identity_hint

Section: OpenSSL (3)
Updated: 2017-05-25
Index Return to Main Contents
 

NAME

SSL_CTX_use_psk_identity_hint, SSL_use_psk_identity_hint, SSL_CTX_set_psk_server_callback, SSL_set_psk_server_callback - set PSK identity hint to use  

SYNOPSIS

 #include <openssl/ssl.h>

 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *hint);
 int SSL_use_psk_identity_hint(SSL *ssl, const char *hint);

 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx,
        unsigned int (*callback)(SSL *ssl, const char *identity,
        unsigned char *psk, int max_psk_len));
 void SSL_set_psk_server_callback(SSL *ssl,
        unsigned int (*callback)(SSL *ssl, const char *identity,
        unsigned char *psk, int max_psk_len));

 

DESCRIPTION

SSL_CTX_use_psk_identity_hint() sets the given NULL-terminated PSK identity hint hint to SSL context object ctx. SSL_use_psk_identity_hint() sets the given NULL-terminated PSK identity hint hint to SSL connection object ssl. If hint is NULL the current hint from ctx or ssl is deleted.

In the case where PSK identity hint is NULL, the server does not send the ServerKeyExchange message to the client.

A server application must provide a callback function which is called when the server receives the ClientKeyExchange message from the client. The purpose of the callback function is to validate the received PSK identity and to fetch the pre-shared key used during the connection setup phase. The callback is set using functions SSL_CTX_set_psk_server_callback() or SSL_set_psk_server_callback(). The callback function is given the connection in parameter ssl, NULL-terminated PSK identity sent by the client in parameter identity, and a buffer psk of length max_psk_len bytes where the pre-shared key is to be stored.  

RETURN VALUES

SSL_CTX_use_psk_identity_hint() and SSL_use_psk_identity_hint() return 1 on success, 0 otherwise.

Return values from the server callback are interpreted as follows:

0
PSK identity was not found. An ``unknown_psk_identity'' alert message will be sent and the connection setup fails.
>0
PSK identity was found and the server callback has provided the PSK successfully in parameter psk. Return value is the length of psk in bytes. It is an error to return a value greater than max_psk_len.

If the PSK identity was not found but the callback instructs the protocol to continue anyway, the callback must provide some random data to psk and return the length of the random data, so the connection will fail with decryption_error before it will be finished completely.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES





Support us on Content Nation
rdf newsfeed | rss newsfeed | Atom newsfeed
- Powered by LeopardCMS - Running on Gentoo -
Copyright 2004-2020 Sascha Nitsch Unternehmensberatung GmbH
Valid XHTML1.1 : Valid CSS : buttonmaker
- Level Triple-A Conformance to Web Content Accessibility Guidelines 1.0 -
- Copyright and legal notices -
Time to create this page: 20.2 ms