NAME         top

       gnutls_x509_privkey_export_pkcs8 - API function

SYNOPSIS         top

       #include <gnutls/x509.h>

       int gnutls_x509_privkey_export_pkcs8(gnutls_x509_privkey_t key,
       gnutls_x509_crt_fmt_t format, const char * password, unsigned int
       flags, void * output_data, size_t * output_data_size);

ARGUMENTS         top

       gnutls_x509_privkey_t key
                   Holds the key

       gnutls_x509_crt_fmt_t format
                   the format of output params. One of PEM or DER.

       const char * password
                   the password that will be used to encrypt the key.

       unsigned int flags
                   an ORed sequence of gnutls_pkcs_encrypt_flags_t

       void * output_data
                   will contain a private key PEM or DER encoded

       size_t * output_data_size
                   holds the size of output_data (and will be replaced by
                   the actual size of parameters)

DESCRIPTION         top

       This function will export the private key to a PKCS8 structure.  Both
       RSA and DSA keys can be exported. For DSA keys we use PKCS 11
       definitions. If the flags do not specify the encryption cipher, then
       the default 3DES (PBES2) will be used.

       The  password can be either ASCII or UTF-8 in the default PBES2
       encryption schemas, or ASCII for the PKCS12 schemas.

       If the buffer provided is not long enough to hold the output, then
       *output_data_size is updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be

       If the structure is PEM encoded, it will have a header of "BEGIN
       ENCRYPTED PRIVATE KEY" or "BEGIN PRIVATE KEY" if encryption is not

RETURNS         top

       In case of failure a negative error code will be returned, and 0 on

REPORTING BUGS         top

       Report bugs to <>.
       Home page:

COPYRIGHT         top

       Copyright © 2001-2017 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

       This page is part of the GnuTLS (GnuTLS Transport Layer Security
       Library) project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this manual
       page, send it to  This page was obtained from the
       tarball gnutls-3.5.9.tar.xz fetched from 
       ⟨⟩ on 2017-03-13.  If you discover
       any rendering problems in this HTML version of the page, or you
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gnutls                              3.5.9gnutls_x509_privkey_export_pkcs8(3)