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Edit File : x509.7ssl \| Size : 6.53 KB
.\" Automatically generated by Pod::Man 4.11 (Pod::Simple 3.35) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \(-- will .\" give an unbreakable dash, \(PI will give pi, \(L" will give a left .\" double quote, and \(R" will give a right double quote. \(C+ will .\" give a nicer C++. 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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" x509 \- X.509 certificate handling .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/x509.h> .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" An X.509 certificate is a structured grouping of information about an individual, a device, or anything one can imagine. An X.509 \s-1CRL\s0 (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 \s-1RFC3280\s0 from \s-1PKIX.\s0 In OpenSSL, the type X509 is used to express such a certificate, and the type X509_CRL is used to express a \s-1CRL.\s0 .PP A related structure is a certificate request, defined in PKCS#10 from \&\s-1RSA\s0 Security, Inc, also reflected in \s-1RFC2896.\s0 In OpenSSL, the type X509_REQ is used to express such a certificate request. .PP 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 attribute), X509_EXTENSION (to express a certificate extension) and a few more. .PP Finally, there's the supertype X509_INFO, which can contain a \s-1CRL,\s0 a certificate and a corresponding private key. .PP \&\fBX509_\fR\fI\s-1XXX\s0\fR, \fBd2i_X509_\fR\fI\s-1XXX\s0\fR, and \fBi2d_X509_\fR\fI\s-1XXX\s0\fR functions handle X.509 certificates, with some exceptions, shown below. .PP \&\fBX509_CRL_\fR\fI\s-1XXX\s0\fR, \fBd2i_X509_CRL_\fR\fI\s-1XXX\s0\fR, and \fBi2d_X509_CRL_\fR\fI\s-1XXX\s0\fR functions handle X.509 CRLs. .PP \&\fBX509_REQ_\fR\fI\s-1XXX\s0\fR, \fBd2i_X509_REQ_\fR\fI\s-1XXX\s0\fR, and \fBi2d_X509_REQ_\fR\fI\s-1XXX\s0\fR functions handle PKCS#10 certificate requests. .PP \&\fBX509_NAME_\fR\fI\s-1XXX\s0\fR functions handle certificate names. .PP \&\fBX509_ATTRIBUTE_\fR\fI\s-1XXX\s0\fR functions handle certificate attributes. .PP \&\fBX509_EXTENSION_\fR\fI\s-1XXX\s0\fR functions handle certificate extensions. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBX509_NAME_ENTRY_get_object\fR\\|(3), \&\fBX509_NAME_add_entry_by_txt\fR\\|(3), \&\fBX509_NAME_add_entry_by_NID\fR\\|(3), \&\fBX509_NAME_print_ex\fR\\|(3), \&\fBX509_NAME_new\fR\\|(3), \&\fBd2i_X509\fR\\|(3), \&\fBd2i_X509_ALGOR\fR\\|(3), \&\fBd2i_X509_CRL\fR\\|(3), \&\fBd2i_X509_NAME\fR\\|(3), \&\fBd2i_X509_REQ\fR\\|(3), \&\fBd2i_X509_SIG\fR\\|(3), \&\fBX509v3\fR\\|(3), \&\fBcrypto\fR\\|(7) .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2003\-2021 The OpenSSL Project Authors. All Rights Reserved. .PP Licensed under the OpenSSL license (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>. Back

Edit File : x509.7ssl | Size : 6.53 KB

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.\" ========================================================================
.\"
.IX Title "X509 7"
.TH X509 7 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
x509 \- X.509 certificate handling
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/x509.h>
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
An X.509 certificate is a structured grouping of information about
an individual, a device, or anything one can imagine.  An X.509 \s-1CRL\s0
(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 \s-1RFC3280\s0 from \s-1PKIX.\s0
In OpenSSL, the type X509 is used to express such a certificate, and
the type X509_CRL is used to express a \s-1CRL.\s0
.PP
A related structure is a certificate request, defined in PKCS#10 from
\&\s-1RSA\s0 Security, Inc, also reflected in \s-1RFC2896.\s0  In OpenSSL, the type
X509_REQ is used to express such a certificate request.
.PP
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 attribute), X509_EXTENSION (to express a certificate
extension) and a few more.
.PP
Finally, there's the supertype X509_INFO, which can contain a \s-1CRL,\s0 a
certificate and a corresponding private key.
.PP
\&\fBX509_\fR\fI\s-1XXX\s0\fR, \fBd2i_X509_\fR\fI\s-1XXX\s0\fR, and \fBi2d_X509_\fR\fI\s-1XXX\s0\fR functions
handle X.509 certificates, with some exceptions, shown below.
.PP
\&\fBX509_CRL_\fR\fI\s-1XXX\s0\fR, \fBd2i_X509_CRL_\fR\fI\s-1XXX\s0\fR, and \fBi2d_X509_CRL_\fR\fI\s-1XXX\s0\fR
functions handle X.509 CRLs.
.PP
\&\fBX509_REQ_\fR\fI\s-1XXX\s0\fR, \fBd2i_X509_REQ_\fR\fI\s-1XXX\s0\fR, and \fBi2d_X509_REQ_\fR\fI\s-1XXX\s0\fR
functions handle PKCS#10 certificate requests.
.PP
\&\fBX509_NAME_\fR\fI\s-1XXX\s0\fR functions handle certificate names.
.PP
\&\fBX509_ATTRIBUTE_\fR\fI\s-1XXX\s0\fR functions handle certificate attributes.
.PP
\&\fBX509_EXTENSION_\fR\fI\s-1XXX\s0\fR functions handle certificate extensions.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBX509_NAME_ENTRY_get_object\fR\|(3),
\&\fBX509_NAME_add_entry_by_txt\fR\|(3),
\&\fBX509_NAME_add_entry_by_NID\fR\|(3),
\&\fBX509_NAME_print_ex\fR\|(3),
\&\fBX509_NAME_new\fR\|(3),
\&\fBd2i_X509\fR\|(3),
\&\fBd2i_X509_ALGOR\fR\|(3),
\&\fBd2i_X509_CRL\fR\|(3),
\&\fBd2i_X509_NAME\fR\|(3),
\&\fBd2i_X509_REQ\fR\|(3),
\&\fBd2i_X509_SIG\fR\|(3),
\&\fBX509v3\fR\|(3),
\&\fBcrypto\fR\|(7)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2003\-2021 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (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>.

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