NAME
crl - CRL utility
SYNOPSIS
openssl crl [-inform PEM|DER] [-outform PEM|DER] [-text] [-in filename] [-out filename] [-noout] [-hash] [-issuer] [-lastupdate] [-nextupdate] [-CAfile file] [-CApath dir]
DESCRIPTION
The crl command processes CRL files in DER or PEM format.
COMMAND OPTIONS
-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. |
-noout | dont 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. |
-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.