NAME
    crl2pkcs7 - Create a PKCS#7 structure from a CRL and certificates.

SYNOPSIS
    openssl crl2pkcs7 [-inform PEM|DER] [-outform PEM|DER] [-in filename]
    [-out filename] [-certfile filename] [-nocrl]

DESCRIPTION
    The crl2pkcs7 command takes an optional CRL and one or more certifi-
    cates and converts them into a PKCS#7 degenerate "certificates only"
    structure.

COMMAND OPTIONS
    -inform DER|PEM
   This specifies the CRL 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 PKCS#7 structure output format. DER format is
   DER encoded PKCS#7 structure.PEM (the default) is a base64 encoded
   version of the DER form with header and footer lines.

    -in filename
   This specifies the input filename to read a CRL from or standard
   input if this option is not specified.

    -out filename
   specifies the output filename to write the PKCS#7 structure to or
   standard output by default.

    -certfile filename
   specifies a filename containing one or more certificates in PEM
   format. All certificates in the file will be added to the PKCS#7
   structure. This option can be used more than once to read certifi-
   cates form multiple files.

    -nocrl
   normally a CRL is included in the output file. With this option no
   CRL is included in the output file and a CRL is not read from the
   input file.

EXAMPLES
    Create a PKCS#7 structure from a certificate and CRL:

 openssl crl2pkcs7 -in crl.pem -certfile cert.pem -out p7.pem

    Creates a PKCS#7 structure in DER format with no CRL from several dif-
    ferent certificates:

 openssl crl2pkcs7 -nocrl -certfile newcert.pem
     -certfile demoCA/cacert.pem -outform DER -out p7.der

NOTES
    The output file is a PKCS#7 signed data structure containing no signers
    and just certificates and an optional CRL.

    This utility can be used to send certificates and CAs to Netscape as
    part of the certificate enrollment process. This involves sending the
    DER encoded output as MIME type application/x-x509-user-cert.

    The PEM encoded form with the header and footer lines removed can be
    used to install user certificates and CAs in MSIE using the Xenroll
    control.

SEE ALSO
   pkcs7(1)