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X509_NAME_add_entry_by_txt(3) OpenSSL X509_NAME_add_entry_by_txt(3)
NAME
X509_NAME_add_entry_by_txt, X509_NAME_add_entry_by_OBJ, X509_NAME_add_entry_by_NID,
X509_NAME_add_entry, X509_NAME_delete_entry - X509_NAME modification functions
SYNOPSIS
#include <openssl/x509.h>
int X509_NAME_add_entry_by_txt(X509_NAME *name, const char *field, int type, const unsigned char *bytes, int len, int loc, int set);
int X509_NAME_add_entry_by_OBJ(X509_NAME *name, ASN1_OBJECT *obj, int type, unsigned char *bytes, int len, int loc, int set);
int X509_NAME_add_entry_by_NID(X509_NAME *name, int nid, int type, unsigned char *bytes, int len, int loc, int set);
int X509_NAME_add_entry(X509_NAME *name,X509_NAME_ENTRY *ne, int loc, int set);
X509_NAME_ENTRY *X509_NAME_delete_entry(X509_NAME *name, int loc);
DESCRIPTION
X509_NAME_add_entry_by_txt(), X509_NAME_add_entry_by_OBJ() and
X509_NAME_add_entry_by_NID() add a field whose name is defined by a string field, an
object obj or a NID nid respectively. The field value to be added is in bytes of length
len. If len is -1 then the field length is calculated internally using strlen(bytes).
The type of field is determined by type which can either be a definition of the type of
bytes (such as MBSTRING_ASC) or a standard ASN1 type (such as V_ASN1_IA5STRING). The new
entry is added to a position determined by loc and set.
X509_NAME_add_entry() adds a copy of X509_NAME_ENTRY structure ne to name. The new entry
is added to a position determined by loc and set. Since a copy of ne is added ne must be
freed up after the call.
X509_NAME_delete_entry() deletes an entry from name at position loc. The deleted entry is
returned and must be freed up.
NOTES
The use of string types such as MBSTRING_ASC or MBSTRING_UTF8 is strongly recommended for
the type parameter. This allows the internal code to correctly determine the type of the
field and to apply length checks according to the relevant standards. This is done using
ASN1_STRING_set_by_NID().
If instead an ASN1 type is used no checks are performed and the supplied data in bytes is
used directly.
In X509_NAME_add_entry_by_txt() the field string represents the field name using
OBJ_txt2obj(field, 0).
The loc and set parameters determine where a new entry should be added. For almost all
applications loc can be set to -1 and set to 0. This adds a new entry to the end of name
as a single valued RelativeDistinguishedName (RDN).
loc actually determines the index where the new entry is inserted: if it is -1 it is
appended.
set determines how the new type is added. If it is zero a new RDN is created.
If set is -1 or 1 it is added to the previous or next RDN structure respectively. This
will then be a multivalued RDN: since multivalues RDNs are very seldom used set is almost
always set to zero.
EXAMPLES
Create an X509_NAME structure:
"C=UK, O=Disorganized Organization, CN=Joe Bloggs"
X509_NAME *nm;
nm = X509_NAME_new();
if (nm == NULL)
/* Some error */
if (!X509_NAME_add_entry_by_txt(nm, "C", MBSTRING_ASC,
"UK", -1, -1, 0))
/* Error */
if (!X509_NAME_add_entry_by_txt(nm, "O", MBSTRING_ASC,
"Disorganized Organization", -1, -1, 0))
/* Error */
if (!X509_NAME_add_entry_by_txt(nm, "CN", MBSTRING_ASC,
"Joe Bloggs", -1, -1, 0))
/* Error */
RETURN VALUES
X509_NAME_add_entry_by_txt(), X509_NAME_add_entry_by_OBJ(), X509_NAME_add_entry_by_NID()
and X509_NAME_add_entry() return 1 for success of 0 if an error occurred.
X509_NAME_delete_entry() returns either the deleted X509_NAME_ENTRY structure of NULL if
an error occurred.
BUGS
type can still be set to V_ASN1_APP_CHOOSE to use a different algorithm to determine field
types. Since this form does not understand multicharacter types, performs no length checks
and can result in invalid field types its use is strongly discouraged.
SEE ALSO
ERR_get_error(3), d2i_X509_NAME(3)
HISTORY
1.0.2k 2017-01-26 X509_NAME_add_entry_by_txt(3)
Generated by $Id: phpMan.php,v 4.55 2007/09/05 04:42:51 chedong Exp $ Author: Che Dong
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Under GNU General Public License
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