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gnutls_pubkey_verify_hash2(3) — Linux manual page

NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | SINCE | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON 

gnutls_pubkey_verify_hash2(3)     gnutls    gnutls_pubkey_verify_hash2(3)

NAME         top

       gnutls_pubkey_verify_hash2 - API function

SYNOPSIS         top

       #include <gnutls/abstract.h>

       int gnutls_pubkey_verify_hash2(gnutls_pubkey_t key,
       gnutls_sign_algorithm_t algo, unsigned int flags, const
       gnutls_datum_t * hash, const gnutls_datum_t * signature);

ARGUMENTS         top

       gnutls_pubkey_t key
                   Holds the public key

       gnutls_sign_algorithm_t algo
                   The signature algorithm used

       unsigned int flags
                   Zero or an OR list of gnutls_certificate_verify_flags

       const gnutls_datum_t * hash
                   holds the hash digest to be verified

       const gnutls_datum_t * signature
                   contains the signature

DESCRIPTION         top

       This function will verify the given signed digest, using the
       parameters from the public key. Note that unlike
       gnutls_privkey_sign_hash(), this function accepts a signature
       algorithm instead of a digest algorithm.  You can use
       gnutls_pk_to_sign() to get the appropriate value.

RETURNS         top

       In case of a verification failure GNUTLS_E_PK_SIG_VERIFY_FAILED is
       returned, and zero or positive code on success. For known to be
       insecure signatures this function will return
       GNUTLS_E_INSUFFICIENT_SECURITY unless the flag
       GNUTLS_VERIFY_ALLOW_BROKEN is specified.

SINCE         top

       3.0

REPORTING BUGS         top

       Report bugs to <bugs@gnutls.org>.
       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 bugs@gnutls.org.  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 man-pages@man7.org

gnutls                            3.8.10    gnutls_pubkey_verify_hash2(3)

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