Updated: 2025/Nov/16

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SSL_get0_group_name(3)              OpenSSL             SSL_get0_group_name(3)


NAME
       SSL_get0_group_name - get name of the group that was used for the key
       agreement of the current TLS session establishment

SYNOPSIS
        #include <openssl/ssl.h>

        const char *SSL_get0_group_name(SSL *s);

DESCRIPTION
       SSL_get0_group_name() returns the name of the group that was used for
       the key agreement of the current TLS session establishment.

RETURN VALUES
       If non-NULL, SSL_get0_group_name() returns the name of the group that
       was used for the key agreement of the current TLS session
       establishment.  If SSL_get0_group_name() returns NULL, an error
       occurred; possibly no TLS session has been established. See also
       SSL_get_negotiated_group(3).

       Note that the return value is valid only during the lifetime of the SSL
       object ssl.

SEE ALSO
       ssl(7), SSL_get_negotiated_group(3)

HISTORY
       This function was added in OpenSSL 3.2.

COPYRIGHT
       Copyright 2023-2025 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (the "License").  You may not use
       this file except in compliance with the License.  You can obtain a copy
       in the file LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>.

3.5.1                             2025-07-01            SSL_get0_group_name(3)