SSL_get_extms_support(3ssl)

SSL_get_extms_support3ssl

Extended master secret support

Usage

 #include <openssl/ssl.h>
 int SSL_get_extms_support(SSL *ssl);

Overview

SSL_get_extms_support() indicates whether the current session used extended master secret.

This function is implemented as a macro.

Return values

SSL_get_extms_support() returns 1 if the current session used extended master secret, 0 if it did not and -1 if a handshake is currently in progress i.e. it is not possible to determine if extended master secret was used.

Releases

6 releases since Debian 9 (Stretch); the text changed 5 times.

  1. 9
  2. 10
  3. 11
  4. 12
  5. 13
  6. Arch

From openssl 3.6.5-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.