crl¶

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