CRL 1 2000-07-16 0.9.9-dev OpenSSL

### NAME

crl - CRL utility

### LIBRARY

libcrypto, -lcrypto

### 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 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.

### 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

openssl_crl2pkcs7(1), openssl_ca(1), openssl_x509(1)