x509
Section: OpenSSL (3)
Updated: 2017-05-25
Index
Return to Main Contents
NAME
x509 - X.509 certificate handling
SYNOPSIS
#include <openssl/x509.h>
DESCRIPTION
A X.509 certificate is a structured grouping of information about
an individual, a device, or anything one can imagine. A X.509
CRL
(certificate revocation list) is a tool to help determine if a
certificate is still valid. The exact definition of those can be
found in the X.509 document from ITU-T, or in
RFC3280 from
PKIX.
In OpenSSL, the type X509 is used to express such a certificate, and
the type X509_CRL is used to express a
CRL.
A related structure is a certificate request, defined in PKCS#10 from
RSA Security, Inc, also reflected in RFC2896. In OpenSSL, the type
X509_REQ is used to express such a certificate request.
To handle some complex parts of a certificate, there are the types
X509_NAME (to express a certificate name), X509_ATTRIBUTE (to express
a certificate attributes), X509_EXTENSION (to express a certificate
extension) and a few more.
Finally, there's the supertype X509_INFO, which can contain a CRL, a
certificate and a corresponding private key.
X509_..., d2i_X509_... and i2d_X509_... handle X.509
certificates, with some exceptions, shown below.
X509_CRL_..., d2i_X509_CRL_... and i2d_X509_CRL_...
handle X.509 CRLs.
X509_REQ_..., d2i_X509_REQ_... and i2d_X509_REQ_...
handle PKCS#10 certificate requests.
X509_NAME_... handle certificate names.
X509_ATTRIBUTE_... handle certificate attributes.
X509_EXTENSION_... handle certificate extensions.
SEE ALSO
X509_NAME_ENTRY_get_object(3),
X509_NAME_add_entry_by_txt(3),
X509_NAME_add_entry_by_NID(3),
X509_NAME_print_ex(3),
X509_NAME_new(3),
d2i_X509(3),
d2i_X509_ALGOR(3),
d2i_X509_CRL(3),
d2i_X509_NAME(3),
d2i_X509_REQ(3),
d2i_X509_SIG(3),
crypto(3),
x509v3(3)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- SEE ALSO
-
|
|
- Running on 
-
:
: 