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)