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NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON |
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gnutls_x509_privkey_generate2(3) gnutls gnutls_x509_privkey_generate2(3)
gnutls_x509_privkey_generate2 - API function
#include <gnutls/x509.h>
int gnutls_x509_privkey_generate2(gnutls_x509_privkey_t key,
gnutls_pk_algorithm_t algo, unsigned int bits, unsigned int
flags, const gnutls_keygen_data_st * data, unsigned data_size);
gnutls_x509_privkey_t key
a key
gnutls_pk_algorithm_t algo
is one of the algorithms in gnutls_pk_algorithm_t.
unsigned int bits
the size of the modulus
unsigned int flags
Must be zero or flags from gnutls_privkey_flags_t.
const gnutls_keygen_data_st * data
Allow specifying gnutls_keygen_data_st types such as
the seed to be used.
unsigned data_size
The number of data available.
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. On DSA keys the PQG parameters are generated
using the seed, while on RSA the two primes. To specify an
explicit seed (by default a random seed is used), use the data
with a GNUTLS_KEYGEN_SEED type.
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.
To export the generated keys in memory or in files it is
recommended to use the PKCS8 form as it can handle all key types,
and can store additional parameters such as the seed, in case of
provable RSA or DSA keys. Generated keys can be exported in
memory using gnutls_privkey_export_x509(), and then with
gnutls_x509_privkey_export2_pkcs8().
If key generation is part of your application, avoid setting the
number of bits directly, and instead use
gnutls_sec_param_to_pk_bits(). That way the generated keys will
adapt to the security levels of the underlying GnuTLS library.
See also gnutls_privkey_generate2().
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a
negative error value.
Report bugs to <bugs@gnutls.org>.
Home page: https://www.gnutls.org
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.
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/
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 gnutls-3.8.5.tar.xz fetched from
⟨http://www.gnutls.org/download.html⟩ on 2024-06-14. 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 3.8.5 gnutls_x509_privkey_generate2(3)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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