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.\" ========================================================================
.\"
.IX Title "CRL2PKCS7 1"
.TH CRL2PKCS7 1 "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.
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.nh
.SH "NAME"
openssl\-crl2pkcs7, crl2pkcs7 \- Create a PKCS#7 structure from a CRL and certificates
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
\&\fBopenssl\fR \fBcrl2pkcs7\fR
[\fB\-help\fR]
[\fB\-inform PEM|DER\fR]
[\fB\-outform PEM|DER\fR]
[\fB\-in filename\fR]
[\fB\-out filename\fR]
[\fB\-certfile filename\fR]
[\fB\-nocrl\fR]
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
The \fBcrl2pkcs7\fR command takes an optional \s-1CRL\s0 and one or more
certificates and converts them into a PKCS#7 degenerate \*(L"certificates
only\*(R" structure.
.SH "OPTIONS"
.IX Header "OPTIONS"
.IP "\fB\-help\fR" 4
.IX Item "-help"
Print out a usage message.
.IP "\fB\-inform DER|PEM\fR" 4
.IX Item "-inform DER|PEM"
This specifies the \s-1CRL\s0 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. The default format is \s-1PEM.\s0
.IP "\fB\-outform DER|PEM\fR" 4
.IX Item "-outform DER|PEM"
This specifies the PKCS#7 structure output format. \fB\s-1DER\s0\fR format is \s-1DER\s0
encoded PKCS#7 structure.\fB\s-1PEM\s0\fR (the default) is a base64 encoded version of
the \s-1DER\s0 form with header and footer lines. The default format is \s-1PEM.\s0
.IP "\fB\-in filename\fR" 4
.IX Item "-in filename"
This specifies the input filename to read a \s-1CRL\s0 from or standard input if this
option is not specified.
.IP "\fB\-out filename\fR" 4
.IX Item "-out filename"
Specifies the output filename to write the PKCS#7 structure to or standard
output by default.
.IP "\fB\-certfile filename\fR" 4
.IX Item "-certfile filename"
Specifies a filename containing one or more certificates in \fB\s-1PEM\s0\fR format.
All certificates in the file will be added to the PKCS#7 structure. This
option can be used more than once to read certificates from multiple
files.
.IP "\fB\-nocrl\fR" 4
.IX Item "-nocrl"
Normally a \s-1CRL\s0 is included in the output file. With this option no \s-1CRL\s0 is
included in the output file and a \s-1CRL\s0 is not read from the input file.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
Create a PKCS#7 structure from a certificate and \s-1CRL:\s0
.PP
.Vb 1
\& openssl crl2pkcs7 \-in crl.pem \-certfile cert.pem \-out p7.pem
.Ve
.PP
Creates a PKCS#7 structure in \s-1DER\s0 format with no \s-1CRL\s0 from several
different certificates:
.PP
.Vb 2
\& openssl crl2pkcs7 \-nocrl \-certfile newcert.pem
\&        \-certfile demoCA/cacert.pem \-outform DER \-out p7.der
.Ve
.SH "NOTES"
.IX Header "NOTES"
The output file is a PKCS#7 signed data structure containing no signers and
just certificates and an optional \s-1CRL.\s0
.PP
This utility can be used to send certificates and CAs to Netscape as part of
the certificate enrollment process. This involves sending the \s-1DER\s0 encoded output
as \s-1MIME\s0 type application/x\-x509\-user\-cert.
.PP
The \fB\s-1PEM\s0\fR encoded form with the header and footer lines removed can be used to
install user certificates and CAs in \s-1MSIE\s0 using the Xenroll control.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBpkcs7\fR\|(1)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2000\-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>.