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gnutls_x509_crq_get_extension_info - API function
int gnutls_x509_crq_get_extension_info(gnutls_x509_crq_t crq, unsigned
indx, void * oid, size_t * sizeof_oid, unsigned int * critical);
should contain a gnutls_x509_crq_t type
Specifies which extension number to get. Use (0) to get the
void * oid a pointer to store the OID
size_t * sizeof_oid
initially holds the maximum size of oid , on return holds
actual size of oid .
unsigned int * critical
output variable with critical flag, may be NULL.
This function will return the requested extension OID in the
certificate, and the critical flag for it. The extension OID will be
stored as a string in the provided buffer. Use
gnutls_x509_crq_get_extension_data() to extract the data.
If the buffer provided is not long enough to hold the output, then *
sizeof_oid is updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative
error code in case of an error. If your have reached the last
extension available GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE will be
Report bugs to <firstname.lastname@example.org>.
Home page: https://www.gnutls.org
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