gnutls_privkey_sign_hash2(3) — Linux manual page


gnutls_privkey_sign_hash2(3)     gnutls     gnutls_privkey_sign_hash2(3)

NAME         top

       gnutls_privkey_sign_hash2 - API function

SYNOPSIS         top

       #include <gnutls/abstract.h>

       int gnutls_privkey_sign_hash2(gnutls_privkey_t signer,
       gnutls_sign_algorithm_t algo, unsigned int flags, const
       gnutls_datum_t * hash_data, gnutls_datum_t * signature);

ARGUMENTS         top

       gnutls_privkey_t signer
                   Holds the signer's key

       gnutls_sign_algorithm_t algo
                   The signature algorithm used

       unsigned int flags
                   Zero or one of gnutls_privkey_flags_t

       const gnutls_datum_t * hash_data
                   holds the data to be signed

       gnutls_datum_t * signature
                   will contain newly allocated signature

DESCRIPTION         top

       This function will sign the given hashed data using the specified
       signature algorithm. This function is an enhancement of
       gnutls_privkey_sign_hash(), as it allows utilizing a alternative
       signature algorithm where possible (e.g, use an RSA key with

       The flags may be GNUTLS_PRIVKEY_SIGN_FLAG_TLS1_RSA.  In that case
       this function will ignore  hash_algo and perform a raw PKCS1
       signature.  Note that this flag is supported since 3.6.9.

       Note also that, not all algorithm support signing already hashed
       data. When signing with Ed25519, gnutls_privkey_sign_data2()
       should be used instead.

RETURNS         top

       On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a
       negative error value.

SINCE         top


REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001- 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 

COLOPHON         top

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gnutls                            3.7.8     gnutls_privkey_sign_hash2(3)