gnutls_x509_crt_get_key_purpose_oid - API function

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

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This function will extract the key purpose OIDs of the Certificate specified by the given index. These are stored in the Extended Key Usage 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.

gnutls_x509_crt_get_key_purpose_oid - API function

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

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.

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 3.8.9 gnutls_x509_crt_get_key_purpose_oid(3)