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.\&quot;
.IX Title &quot;CRL 1&quot;
.TH CRL 1 &quot;2023-09-11&quot; &quot;1.1.1w&quot; &quot;OpenSSL&quot;
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.SH &quot;NAME&quot;
openssl\-crl, crl \- CRL utility
.SH &quot;SYNOPSIS&quot;
.IX Header &quot;SYNOPSIS&quot;
\&amp;\fBopenssl\fR \fBcrl\fR
[\fB\-help\fR]
[\fB\-inform PEM|DER\fR]
[\fB\-outform PEM|DER\fR]
[\fB\-text\fR]
[\fB\-in filename\fR]
[\fB\-out filename\fR]
[\fB\-nameopt option\fR]
[\fB\-noout\fR]
[\fB\-hash\fR]
[\fB\-issuer\fR]
[\fB\-lastupdate\fR]
[\fB\-nextupdate\fR]
[\fB\-CAfile file\fR]
[\fB\-CApath dir\fR]
.SH &quot;DESCRIPTION&quot;
.IX Header &quot;DESCRIPTION&quot;
The \fBcrl\fR command processes \s-1CRL\s0 files in \s-1DER\s0 or \s-1PEM\s0 format.
.SH &quot;OPTIONS&quot;
.IX Header &quot;OPTIONS&quot;
.IP &quot;\fB\-help\fR&quot; 4
.IX Item &quot;-help&quot;
Print out a usage message.
.IP &quot;\fB\-inform DER|PEM\fR&quot; 4
.IX Item &quot;-inform DER|PEM&quot;
This specifies the input format. \fB\s-1DER\s0\fR format is \s-1DER\s0 encoded \s-1CRL\s0
structure. \fB\s-1PEM\s0\fR (the default) is a base64 encoded version of
the \s-1DER\s0 form with header and footer lines.
.IP &quot;\fB\-outform DER|PEM\fR&quot; 4
.IX Item &quot;-outform DER|PEM&quot;
This specifies the output format, the options have the same meaning and default
as the \fB\-inform\fR option.
.IP &quot;\fB\-in filename\fR&quot; 4
.IX Item &quot;-in filename&quot;
This specifies the input filename to read from or standard input if this
option is not specified.
.IP &quot;\fB\-out filename\fR&quot; 4
.IX Item &quot;-out filename&quot;
Specifies the output filename to write to or standard output by
default.
.IP &quot;\fB\-text\fR&quot; 4
.IX Item &quot;-text&quot;
Print out the \s-1CRL\s0 in text form.
.IP &quot;\fB\-nameopt option\fR&quot; 4
.IX Item &quot;-nameopt option&quot;
Option which determines how the subject or issuer names are displayed. See
the description of \fB\-nameopt\fR in \fBx509\fR\|(1).
.IP &quot;\fB\-noout\fR&quot; 4
.IX Item &quot;-noout&quot;
Don't output the encoded version of the \s-1CRL.\s0
.IP &quot;\fB\-hash\fR&quot; 4
.IX Item &quot;-hash&quot;
Output a hash of the issuer name. This can be use to lookup CRLs in
a directory by issuer name.
.IP &quot;\fB\-hash_old\fR&quot; 4
.IX Item &quot;-hash_old&quot;
Outputs the \*(L&quot;hash\*(R&quot; of the \s-1CRL\s0 issuer name using the older algorithm
as used by OpenSSL before version 1.0.0.
.IP &quot;\fB\-issuer\fR&quot; 4
.IX Item &quot;-issuer&quot;
Output the issuer name.
.IP &quot;\fB\-lastupdate\fR&quot; 4
.IX Item &quot;-lastupdate&quot;
Output the lastUpdate field.
.IP &quot;\fB\-nextupdate\fR&quot; 4
.IX Item &quot;-nextupdate&quot;
Output the nextUpdate field.
.IP &quot;\fB\-CAfile file\fR&quot; 4
.IX Item &quot;-CAfile file&quot;
Verify the signature on a \s-1CRL\s0 by looking up the issuing certificate in
\&amp;\fBfile\fR.
.IP &quot;\fB\-CApath dir\fR&quot; 4
.IX Item &quot;-CApath dir&quot;
Verify the signature on a \s-1CRL\s0 by looking up the issuing certificate in
\&amp;\fBdir\fR. This directory must be a standard certificate directory: that
is a hash of each subject name (using \fBx509 \-hash\fR) should be linked
to each certificate.
.SH &quot;NOTES&quot;
.IX Header &quot;NOTES&quot;
The \s-1PEM CRL\s0 format uses the header and footer lines:
.PP
.Vb 2
\&amp; \-\-\-\-\-BEGIN X509 CRL\-\-\-\-\-
\&amp; \-\-\-\-\-END X509 CRL\-\-\-\-\-
.Ve
.SH &quot;EXAMPLES&quot;
.IX Header &quot;EXAMPLES&quot;
Convert a \s-1CRL\s0 file from \s-1PEM\s0 to \s-1DER:\s0
.PP
.Vb 1
\&amp; openssl crl \-in crl.pem \-outform DER \-out crl.der
.Ve
.PP
Output the text form of a \s-1DER\s0 encoded certificate:
.PP
.Vb 1
\&amp; openssl crl \-in crl.der \-inform DER \-text \-noout
.Ve
.SH &quot;BUGS&quot;
.IX Header &quot;BUGS&quot;
Ideally it should be possible to create a \s-1CRL\s0 using appropriate options
and files too.
.SH &quot;SEE ALSO&quot;
.IX Header &quot;SEE ALSO&quot;
\&amp;\fBcrl2pkcs7\fR\|(1), \fBca\fR\|(1), \fBx509\fR\|(1)
.SH &quot;COPYRIGHT&quot;
.IX Header &quot;COPYRIGHT&quot;
Copyright 2000\-2018 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L&quot;License\*(R&quot;).  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
&lt;https://www.openssl.org/source/license.html&gt;.
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