crl - CRL utility
openssl crl [-inform PEM|DER] [-outform PEM|DER] [-text] [-in filename] [-out filename] [-noout] [-hash] [-issuer] [-lastupdate] [-nextupdate] [-CAfile file] [-CApath dir]
The crl command processes CRL files in DER or PEM format.
-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.
The PEM CRL format uses the header and footer lines:
-----BEGIN X509 CRL----- -----END X509 CRL-----
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
Ideally it should be possible to create a CRL using appropriate options and files too.
crl2pkcs7(1), ca(1), x509(1)