crl.1ssl man page

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.

Command 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 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 versions before 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 -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)

Info

2016-12-02 1.1.0c OpenSSL