Developer's Daily | Unix by Example |
main | java | perl | unix | dev directory | web log |
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 |
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. |
?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) |