DOKK / manpages / debian 11 / libtasn1-6-dev / asn1_object_id_der.3.en
asn1_object_id_der(3) libtasn1 asn1_object_id_der(3)

asn1_object_id_der - API function

#include <libtasn1.h>

int asn1_object_id_der(const char * str, unsigned char * der, int * der_len, unsigned flags);

An object identifier in numeric, dot format.
buffer to hold the returned encoding (may be NULL).
initially the size of der ; will hold the final size.
must be zero

Creates the DER encoding of the provided object identifier.

ASN1_SUCCESS if DER encoding was OK, ASN1_VALUE_NOT_VALID if str is not a valid OID, ASN1_MEM_ERROR if the der vector isn't big enough and in this case der_len will contain the length needed.

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The full documentation for libtasn1 is maintained as a Texinfo manual. If the info and libtasn1 programs are properly installed at your site, the command

info libtasn1

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http://www.gnu.org/software/libtasn1/manual/
4.16.0 libtasn1