Manual Reference Pages - X509_NAME_ADD_ENTRY (3)
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
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);
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
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
X509_NAME_delete_entry() deletes an entry from name at position
loc. The deleted entry is returned and must be freed up.
The use of string types such as MBSTRING_ASC or MBSTRING_UTF8
is strongly recommened 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
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.
Create an X509_NAME structure:
C=UK, O=Disorganized Organization, CN=Joe Bloggs
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 */
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.
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.
|1.0.1s ||X509_NAME_ADD_ENTRY_BY_TXT (3) ||2016-03-01 |
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