# man > openssl-crl2pkcs7(1)

[_OPENSSL-CRL2PKCS7_(1SSL)](https://www.chedong.com/phpMan.php/man/OPENSSL-CRL2PKCS7/1SSL/markdown)                        OpenSSL                       [_OPENSSL-CRL2PKCS7_(1SSL)](https://www.chedong.com/phpMan.php/man/OPENSSL-CRL2PKCS7/1SSL/markdown)

## NAME
       openssl-crl2pkcs7 - Create a PKCS#7 structure from a CRL and certificates

## SYNOPSIS
       **openssl crl2pkcs7 **[**-help**] [**-inform DER**|**PEM**] [**-outform DER**|**PEM**] [**-in _**filename_] [**-out _**filename_]
       [**-certfile _**filename_] [**-nocrl**] [**-provider _**name_] [**-provider-path _**path_] [**-propquery _**propq_]

## DESCRIPTION
       This command takes an optional CRL and one or more certificates and converts them into a
       PKCS#7 degenerate "certificates only" structure.

## OPTIONS
### -help
           Print out a usage message.

### -inform DER
           The  input  format  of  the  CRL;  the default is **PEM**.  See [**openssl-format-options**(1)](https://www.chedong.com/phpMan.php/man/openssl-format-options/1/markdown) for
           details.

### -outform DER
           The   output   format   of   the   PKCS#7   object;   the   default    is    **PEM**.     See
           [**openssl-format-options**(1)](https://www.chedong.com/phpMan.php/man/openssl-format-options/1/markdown) for details.

### -in _
           This  specifies the input filename to read a CRL from or standard input if this option is
           not specified.

### -out _
           Specifies the output filename to write the PKCS#7 structure  to  or  standard  output  by
           default.

### -certfile _
           Specifies a filename containing one or more certificates in **PEM **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.

### -nocrl
           Normally a CRL is included in the output file. With this option no CRL is included in the
           output file and a CRL is not read from the input file.

### -provider _
### -provider-path _
### -propquery _
           See "Provider Options" in [**openssl**(1)](https://www.chedong.com/phpMan.php/man/openssl/1/markdown), [**provider**(7)](https://www.chedong.com/phpMan.php/man/provider/7/markdown), and [**property**(7)](https://www.chedong.com/phpMan.php/man/property/7/markdown).

## EXAMPLES
       Create a PKCS#7 structure from a certificate and CRL:

        openssl crl2pkcs7 -in crl.pem -certfile cert.pem -out p7.pem

       Creates a PKCS#7 structure in DER format with no CRL from several different certificates:

        openssl crl2pkcs7 -nocrl -certfile newcert.pem
               -certfile demoCA/cacert.pem -outform DER -out p7.der

## NOTES
       The output file is a PKCS#7 signed data structure containing no signers and just certificates
       and an optional CRL.

       This  command can be used to send certificates and CAs to Netscape as part of the certificate
       enrollment  process.  This  involves  sending  the  DER   encoded   output   as   MIME   type
       application/x-x509-user-cert.

       The  **PEM  **encoded  form  with the header and footer lines removed can be used to install user
       certificates and CAs in MSIE using the Xenroll control.

## SEE ALSO
       [**openssl**(1)](https://www.chedong.com/phpMan.php/man/openssl/1/markdown), [**openssl-pkcs7**(1)](https://www.chedong.com/phpMan.php/man/openssl-pkcs7/1/markdown)

## COPYRIGHT
       Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.

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

3.0.13                                       2026-07-29                      [_OPENSSL-CRL2PKCS7_(1SSL)](https://www.chedong.com/phpMan.php/man/OPENSSL-CRL2PKCS7/1SSL/markdown)