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gnutls_x509_crt_get_key_purpose_oid(gnutgnutls_x509_crt_get_key_purpose_oid(3)

NAME
       gnutls_x509_crt_get_key_purpose_oid - API function

SYNOPSIS
       #include <gnutls/x509.h>

       int   gnutls_x509_crt_get_key_purpose_oid(gnutls_x509_crt_t  cert,  un-
       signed indx, void * oid, size_t * oid_size, unsigned int * critical);

ARGUMENTS
       gnutls_x509_crt_t cert
                   should contain a gnutls_x509_crt_t type

       unsigned indx
                   This specifies which OID to return.  Use  (0)  to  get  the
                   first one.

       void * oid  a pointer to a buffer to hold the OID (may be null)

       size_t * oid_size
                   initially holds the size of  oid

       unsigned int * critical
                   output flag to indicate criticality of extension

DESCRIPTION
       This  function  will  extract  the  key purpose OIDs of the Certificate
       specified by the given index.  These are stored in the Extended Key Us-
       age  extension  (2.5.29.37)  See  the GNUTLS_KP_* definitions for human
       readable names.

       If  oid is null then only the size will be filled.  The   oid  returned
       will  be  null  terminated, although  oid_size will not account for the
       trailing null.

RETURNS
       GNUTLS_E_SHORT_MEMORY_BUFFER if the provided buffer is not long enough,
       and  in that case the *oid_size will be updated with the required size.
       On success 0 is returned.

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                               3.7gnutls_x509_crt_get_key_purpose_oid(3)

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