Section: OpenSSL (1)
Updated: 2000-02-08
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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.
print out the CRL in text form.
don't output the encoded version of the CRL.
output a hash of the issuer name. This can be use to lookup CRLs in a directory by issuer name.
output the issuer name.
output the lastUpdate field.
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)