NAME¶

gnutls_x509_privkey_generate - API function

SYNOPSIS¶

#include <gnutls/x509.h>

int gnutls_x509_privkey_generate(gnutls_x509_privkey_t key, gnutls_pk_algorithm_t algo, unsigned int bits, unsigned int flags);

ARGUMENTS¶

gnutls_x509_privkey_t key

an initialized key

gnutls_pk_algorithm_t algo

is one of the algorithms in gnutls_pk_algorithm_t.

unsigned int bits

the size of the parameters to generate

unsigned int flags

Must be zero or flags from gnutls_privkey_flags_t.

DESCRIPTION¶

This function will generate a random private key. Note that this function must be called on an initialized private key.

The flag GNUTLS_PRIVKEY_FLAG_PROVABLE instructs the key generation process to use algorithms like Shawe-Taylor (from FIPS PUB186-4) which generate provable parameters out of a seed for RSA and DSA keys. See gnutls_x509_privkey_generate2() for more information.

Note that when generating an elliptic curve key, the curve can be substituted in the place of the bits parameter using the GNUTLS_CURVE_TO_BITS() macro. The input to the macro is any curve from gnutls_ecc_curve_t.

For DSA keys, if the subgroup size needs to be specified check the GNUTLS_SUBGROUP_TO_BITS() macro.

It is recommended to do not set the number of bits directly, use gnutls_sec_param_to_pk_bits() instead .

See also gnutls_privkey_generate(), gnutls_x509_privkey_generate2().

RETURNS¶

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

REPORTING BUGS¶

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

COPYRIGHT¶

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¶

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/