1gnutls_x509_crt_get_key_purpose_oid(3g)nutlgsnutls_x509_crt_get_key_purpose_oid(3)
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NAME

6       gnutls_x509_crt_get_key_purpose_oid - API function
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SYNOPSIS

9       #include <gnutls/x509.h>
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11       int   gnutls_x509_crt_get_key_purpose_oid(gnutls_x509_crt_t  cert,  un‐
12       signed indx, void * oid, size_t * oid_size, unsigned int * critical);
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ARGUMENTS

15       gnutls_x509_crt_t cert
16                   should contain a gnutls_x509_crt_t type
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18       unsigned indx
19                   This specifies which OID to return.  Use  (0)  to  get  the
20                   first one.
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22       void * oid  a pointer to a buffer to hold the OID (may be null)
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24       size_t * oid_size
25                   initially holds the size of  oid
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27       unsigned int * critical
28                   output flag to indicate criticality of extension
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DESCRIPTION

31       This  function  will  extract  the  key purpose OIDs of the Certificate
32       specified by the given index.  These are stored in the Extended Key Us‐
33       age  extension  (2.5.29.37)  See  the GNUTLS_KP_* definitions for human
34       readable names.
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36       If  oid is null then only the size will be filled.  The   oid  returned
37       will  be  null  terminated, although  oid_size will not account for the
38       trailing null.
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RETURNS

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

46       Report bugs to <bugs@gnutls.org>.
47       Home page: https://www.gnutls.org
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51       Copyright © 2001- Free Software Foundation, Inc., and others.
52       Copying and distribution of this file, with  or  without  modification,
53       are  permitted in any medium without royalty provided the copyright no‐
54       tice and this notice are preserved.
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SEE ALSO

57       The full documentation for gnutls is maintained as  a  Texinfo  manual.
58       If  the /usr/share/doc/gnutls/ directory does not contain the HTML form
59       visit
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61       https://www.gnutls.org/manual/
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63gnutls                               3.7.g2nutls_x509_crt_get_key_purpose_oid(3)
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