1gnutls_x509_crt_get_key_purpose_oid(3g)nutlgsnutls_x509_crt_get_key_purpose_oid(3)
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6 gnutls_x509_crt_get_key_purpose_oid - This function returns the Cer‐
7 tificate's key purpose OIDs
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10 #include <gnutls/x509.h>
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12 int gnutls_x509_crt_get_key_purpose_oid(gnutls_x509_crt_t cert, int
13 indx, void * oid, size_t * sizeof_oid, unsigned int * critical);
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16 gnutls_x509_crt_t cert
17 should contain a gnutls_x509_crt_t structure
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19 int indx This specifies which OID to return. Use zero 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 * sizeof_oid
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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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
33 Usage 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.
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39 GNUTLS_E_SHORT_MEMORY_BUFFER if the provided buffer is not long enough,
40 and in that case the *sizeof_oid will be updated with the required
41 size. On success 0 is returned.
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44 Report bugs to <bug-gnutls@gnu.org>. GnuTLS home page:
45 http://www.gnu.org/software/gnutls/ General help using GNU software:
46 http://www.gnu.org/gethelp/
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49 Copyright © 2008 Free Software Foundation.
50 Copying and distribution of this file, with or without modification,
51 are permitted in any medium without royalty provided the copyright
52 notice and this notice are preserved.
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55 The full documentation for gnutls is maintained as a Texinfo manual.
56 If the info and gnutls programs are properly installed at your site,
57 the command
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59 info gnutls
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61 should give you access to the complete manual.
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65gnutls 2.8.g6nutls_x509_crt_get_key_purpose_oid(3)