- NAME
- SYNOPSIS
- DESCRIPTION
- OPTIONS
- NOTES
- EXAMPLES
- BUGS
- SEE ALSO
- COPYRIGHT

# NAME

openssl-crl, crl - CRL utility

# SYNOPSIS

openssl crl [-help] [-inform PEM|DER] [-outform PEM|DER] [-text] [-in filename] [-out filename] [-nameopt option] [-noout] [-hash] [-issuer] [-lastupdate] [-nextupdate] [-CAfile file] [-CApath dir]

# DESCRIPTION

The crl command processes CRL files in DER or PEM format.

# OPTIONS

-help

  Print out a usage message.

-inform DER|PEM

  This specifies the input format. DER format is DER encoded CRL structure. PEM (the default) is a base64 encoded version of the DER form with header and footer lines.

-outform DER|PEM

  This specifies the output format, the options have the same meaning and default as the -inform option.

-in filename

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

-out filename

  Specifies the output filename to write to or standard output by default.

-text

  Print out the CRL in text form.

-nameopt option

  Option which determines how the subject or issuer names are displayed. See the description of -nameopt in x509(1).

-noout

  Don't output the encoded version of the CRL.

-hash

  Output a hash of the issuer name. This can be use to lookup CRLs in a directory by issuer name.

-hash_old

  Outputs the "hash" of the CRL issuer name using the older algorithm as used by OpenSSL before version 1.0.0.

-issuer

  Output the issuer name.

-lastupdate

  Output the lastUpdate field.

-nextupdate

  Output the nextUpdate field.

-CAfile file

  Verify the signature on a CRL by looking up the issuing certificate in file.

-CApath dir

  Verify the signature on a CRL by looking up the issuing certificate in dir. This directory must be a standard certificate directory: that is a hash of each subject name (using x509 -hash) should be linked to each certificate.

# NOTES

The PEM CRL format uses the header and footer lines:

    -----BEGIN X509 CRL-----
    -----END X509 CRL-----

# EXAMPLES

Convert a CRL file from PEM to DER:

    openssl crl -in crl.pem -outform DER -out crl.der

Output the text form of a DER encoded certificate:

    openssl crl -in crl.der -inform DER -text -noout

# BUGS

Ideally it should be possible to create a CRL using appropriate options and files too.

# SEE ALSO

crl2pkcs7(1), ca(1), x509(1)

# COPYRIGHT

Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (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.