gnutls_x509_privkey_generate2(3) — Linux manual page

NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | RETURNS | REPORTING BUGS | COPYRIGHT | SEE ALSO | COLOPHON

gnutls_x509_privkey_generate2(3) gnutls gnutls_x509_privkey_generate2(3)

NAME         top

       gnutls_x509_privkey_generate2 - API function

SYNOPSIS         top

       #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);

ARGUMENTS         top

       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.

DESCRIPTION         top

       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().

RETURNS         top

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

REPORTING BUGS         top

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

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

       https://www.gnutls.org/manual/ 

COLOPHON         top

       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-3.7.1.tar.xz fetched from
       ⟨http://www.gnutls.org/download.html⟩ on 2021-04-01.  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                            3.7.1 gnutls_x509_privkey_generate2(3)