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📖 NAME

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

🚀 Quick Reference

Use Case	Command	Description
📄 Create PKCS#7 from cert + CRL (PEM)	openssl crl2pkcs7 -in crl.pem -certfile cert.pem -out p7.pem	Convert a CRL and one certificate into a PKCS#7 signed-data structure
📦 Create PKCS#7 in DER, no CRL, multiple certs	openssl crl2pkcs7 -nocrl -certfile newcert.pem -certfile demoCA/cacert.pem -outform DER -out p7.der	Build a DER-encoded PKCS#7 containing only certificates (no CRL)
❓ Show help message	openssl crl2pkcs7 -help	Print usage information for the command

📋 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|PEM

The input format of the CRL; the default is PEM. See openssl-format-options(1) for details.

📤 -outform DER|PEM

The output format of the PKCS#7 object; the default is PEM. See openssl-format-options(1) for details.

📄 -in filename

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

💾 -out filename

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

🔗 -certfile filename

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 name

🔌 -provider-path path

🔌 -propquery propq

See "Provider Options" in openssl(1), provider(7), and property(7).

📚 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)
• openssl-pkcs7(1)

©️ 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.

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3.0.2   2026-06-02   OPENSSL-CRL2PKCS7(1SSL)

📖 NAME 🚀 Quick Reference 📋 SYNOPSIS 📝 DESCRIPTION ⚙️ OPTIONS 📚 EXAMPLES 📌 NOTES 🔗 SEE ALSO ©️ COPYRIGHT