gnutls_dh_get_prime_bits(3) — Linux manual page

gnutls_dh_get_prime_bits(3)       gnutls      gnutls_dh_get_prime_bits(3)

NAME         top

       gnutls_dh_get_prime_bits - API function

SYNOPSIS         top

       #include <gnutls/gnutls.h>

       int gnutls_dh_get_prime_bits(gnutls_session_t session);

ARGUMENTS         top

       gnutls_session_t session
                   is a gnutls session

DESCRIPTION         top

       This function will return the bits of the prime used in the last
       Diffie-Hellman key exchange with the peer.  Should be used for
       both anonymous and ephemeral Diffie-Hellman.  Note that some
       ciphers, like RSA and DSA without DHE, do not use a Diffie-Hellman
       key exchange, and then this function will return 0.

RETURNS         top

       The Diffie-Hellman bit strength is returned, or 0 if no
       Diffie-Hellman key exchange was done, or a negative error code on
       failure.

REPORTING BUGS         top

       Report bugs to <[email protected]>.
       Home page: https://www.gnutls.org

COPYRIGHT         top

       Copyright © 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         top

       The full documentation for gnutls is maintained as a Texinfo
       manual.  If the /usr/share/doc/gnutls/ directory does not contain
       the HTML form visit

       https://www.gnutls.org/manual/

COLOPHON         top

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at
       ⟨http://www.gnutls.org/⟩.  If you have a bug report for this
       manual page, send it to [email protected].  This page was obtained
       from the tarball fetched from
       ⟨https://www.gnupg.org/ftp/gcrypt/gnutls/⟩ on 2025-08-11.  If you
       discover any rendering problems in this HTML version of the page,
       or you believe there is a better or more up-to-date source for the
       page, or you have corrections or improvements to the information
       in this COLOPHON (which is not part of the original manual page),
       send a mail to [email protected]

gnutls                            3.8.10      gnutls_dh_get_prime_bits(3)

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