* @oid: holds an Object Identified in null terminated string
* @indx: In case multiple same OIDs exist in the RDN, this specifies which to send. Use zero to get the first one.
* @raw_flag: If non zero returns the raw DER data of the DN part.
- * @buf: a pointer to a structure to hold the name (may be null)
+ * @buf: a pointer where the DN part will be copied (may be null).
* @sizeof_buf: initially holds the size of @buf
*
* This function will extract the part of the name of the Certificate