gnutls_privkey_sign_hash2(3) gnutls gnutls_privkey_sign_hash2(3)
NAME
gnutls_privkey_sign_hash2 - API function
SYNOPSIS
#include <gnutls/abstract.h>
int gnutls_privkey_sign_hash2(gnutls_privkey_t signer, gnutls_sign_al-
gorithm_t algo, unsigned int flags, const gnutls_datum_t * hash_data,
gnutls_datum_t * signature);
ARGUMENTS
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
This function will sign the given hashed data using the specified sig-
nature algorithm. This function is an enhancement of
gnutls_privkey_sign_hash(), as it allows utilizing a alternative signa-
ture algorithm where possible (e.g, use an RSA key with RSA-PSS).
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
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative er-
ror value.
SINCE
3.6.0
REPORTING BUGS
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
COPYRIGHT
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 no-
tice 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 3.7.3 gnutls_privkey_sign_hash2(3)
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