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Title "X509_EXTENSION_SET_OBJECT 3ossl" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
X509_EXTENSION_set_object, X509_EXTENSION_set_critical, X509_EXTENSION_set_data, X509_EXTENSION_create_by_NID, X509_EXTENSION_create_by_OBJ, X509_EXTENSION_get_object, X509_EXTENSION_get_critical, X509_EXTENSION_get_data - extension utility functions Header "SYNOPSIS" .Vb 3 int X509_EXTENSION_set_object(X509_EXTENSION *ex, const ASN1_OBJECT *obj); int X509_EXTENSION_set_critical(X509_EXTENSION *ex, int crit); int X509_EXTENSION_set_data(X509_EXTENSION *ex, ASN1_OCTET_STRING *data); \& X509_EXTENSION *X509_EXTENSION_create_by_NID(X509_EXTENSION **ex, int nid, int crit, ASN1_OCTET_STRING *data); X509_EXTENSION *X509_EXTENSION_create_by_OBJ(X509_EXTENSION **ex, const ASN1_OBJECT *obj, int crit, ASN1_OCTET_STRING *data); \& ASN1_OBJECT *X509_EXTENSION_get_object(X509_EXTENSION *ex); int X509_EXTENSION_get_critical(const X509_EXTENSION *ex); ASN1_OCTET_STRING *X509_EXTENSION_get_data(X509_EXTENSION *ne); .Ve Header "DESCRIPTION" \fBX509_EXTENSION_set_object() sets the extension type of ex to obj. The \fBobj pointer is duplicated internally so obj should be freed up after use.

\fBX509_EXTENSION_set_critical() sets the criticality of ex to crit. If \fBcrit is zero the extension in non-critical otherwise it is critical.

\fBX509_EXTENSION_set_data() sets the data in extension ex to data. The \fBdata pointer is duplicated internally.

\fBX509_EXTENSION_create_by_NID() creates an extension of type nid, criticality crit using data data. The created extension is returned and written to *ex reusing or allocating a new extension if necessary so *ex should either be \s-1NULL\s0 or a valid X509_EXTENSION structure it must \fBnot be an uninitialised pointer.

\fBX509_EXTENSION_create_by_OBJ() is identical to X509_EXTENSION_create_by_NID() except it creates and extension using obj instead of a \s-1NID.\s0

\fBX509_EXTENSION_get_object() returns the extension type of ex as an \fB\s-1ASN1_OBJECT\s0 pointer. The returned pointer is an internal value which must not be freed up.

\fBX509_EXTENSION_get_critical() returns the criticality of extension ex it returns 1 for critical and 0 for non-critical.

\fBX509_EXTENSION_get_data() returns the data of extension ex. The returned pointer is an internal value which must not be freed up.

Header "NOTES" These functions manipulate the contents of an extension directly. Most applications will want to parse or encode and add an extension: they should use the extension encode and decode functions instead such as \fBX509_add1_ext_i2d() and X509_get_ext_d2i().

The data associated with an extension is the extension encoding in an \fB\s-1ASN1_OCTET_STRING\s0 structure.

Header "RETURN VALUES" \fBX509_EXTENSION_set_object() X509_EXTENSION_set_critical() and \fBX509_EXTENSION_set_data() return 1 for success and 0 for failure.

\fBX509_EXTENSION_create_by_NID() and X509_EXTENSION_create_by_OBJ() return an X509_EXTENSION pointer or \s-1NULL\s0 if an error occurs.

\fBX509_EXTENSION_get_object() returns an \s-1ASN1_OBJECT\s0 pointer.

\fBX509_EXTENSION_get_critical() returns 0 for non-critical and 1 for critical.

\fBX509_EXTENSION_get_data() returns an \s-1ASN1_OCTET_STRING\s0 pointer.

Header "SEE ALSO" \fBX509V3_get_d2i\|(3) Header "COPYRIGHT" Copyright 2015-2016 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.