gnutls_pubkey_verify_hash2(3)       gnutls       gnutls_pubkey_verify_hash2(3)

NAME
       gnutls_pubkey_verify_hash2 - API function

SYNOPSIS
       #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
       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
       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
       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
       3.0

REPORTING BUGS
       Report bugs to <bugs@gnutls.org>.
       Home page: https://www.gnutls.org


COPYRIGHT
       Copyright (C) 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
       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/

gnutls                               3.8.5       gnutls_pubkey_verify_hash2(3)