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ASN1_STRING_TABLE_ADD(3) Library Functions Manual ASN1_STRING_TABLE_ADD(3)

ASN1_STRING_TABLE_add, ASN1_STRING_TABLE_get, ASN1_STRING_TABLE_cleanupmaintain the global ASN.1 string table

#include <openssl/asn1.h>

ASN1_STRING_TABLE_add(int nid, long minsize, long maxsize, unsigned long mask, unsigned long flags);

ASN1_STRING_TABLE_get(int nid);


The ASN.1 string table is a unique global object. Each entry is of the type ASN1_STRING_TABLE and contains information about one NID object. Some entries are predefined according to RFC 3280 appendix A.1.

The function () changes the existing entry for nid or, if there is none, allocates a new entry. Each field of the entry is modified according to the function argument of the same name. The minsize and maxsize arguments overwrite the existing fields unless they are -1. The mask argument always overwrites the existing field. The bits set in the flags argument are OR'ed into the existing field. No useful flags are currently defined, so passing 0 is recommended.

The function () retrieves the entry for nid.

The function () removes and frees all entries except the predefined ones.

The ASN1_STRING_TABLE_add() function returns 1 if successful; otherwise 0 is returned and an error code can be retrieved with ERR_get_error(3).

ASN1_STRING_TABLE_get() returns a valid ASN1_STRING_TABLE structure or NULL if nothing is found.

ASN1_OBJECT_new(3), OBJ_nid2obj(3)

ASN1_STRING_TABLE_add(), ASN1_STRING_TABLE_get(), and ASN1_STRING_TABLE_cleanup() first appeared in OpenSSL 0.9.5 and have been available since OpenBSD 2.7.

Most aspects of the semantics considerably differ from OpenSSL.

June 14, 2019 OpenBSD-current