1=pod
2
3=head1 NAME
4
5crl2pkcs7 - Create a PKCS#7 structure from a CRL and certificates.
6
7=head1 SYNOPSIS
8
9B<openssl> B<crl2pkcs7>
10[B<-inform PEM|DER>]
11[B<-outform PEM|DER>]
12[B<-in filename>]
13[B<-out filename>]
14[B<-certfile filename>]
15[B<-nocrl>]
16
17=head1 DESCRIPTION
18
19The B<crl2pkcs7> command takes an optional CRL and one or more
20certificates and converts them into a PKCS#7 degenerate "certificates
21only" structure.
22
23=head1 COMMAND OPTIONS
24
25=over 4
26
27=item B<-inform DER|PEM>
28
29This specifies the CRL input format. B<DER> format is DER encoded CRL
30structure.B<PEM> (the default) is a base64 encoded version of
31the DER form with header and footer lines.
32
33=item B<-outform DER|PEM>
34
35This specifies the PKCS#7 structure output format. B<DER> format is DER
36encoded PKCS#7 structure.B<PEM> (the default) is a base64 encoded version of
37the DER form with header and footer lines.
38
39=item B<-in filename>
40
41This specifies the input filename to read a CRL from or standard input if this
42option is not specified.
43
44=item B<-out filename>
45
46specifies the output filename to write the PKCS#7 structure to or standard
47output by default.
48
49=item B<-certfile filename>
50
51specifies a filename containing one or more certificates in B<PEM> format.
52All certificates in the file will be added to the PKCS#7 structure. This
53option can be used more than once to read certificates form multiple
54files.
55
56=item B<-nocrl>
57
58normally a CRL is included in the output file. With this option no CRL is
59included in the output file and a CRL is not read from the input file.
60
61=back
62
63=head1 EXAMPLES
64
65Create a PKCS#7 structure from a certificate and CRL:
66
67 openssl crl2pkcs7 -in crl.pem -certfile cert.pem -out p7.pem
68
69Creates a PKCS#7 structure in DER format with no CRL from several
70different certificates:
71
72 openssl crl2pkcs7 -nocrl -certfile newcert.pem
73	-certfile demoCA/cacert.pem -outform DER -out p7.der
74
75=head1 NOTES
76
77The output file is a PKCS#7 signed data structure containing no signers and
78just certificates and an optional CRL.
79
80This utility can be used to send certificates and CAs to Netscape as part of
81the certificate enrollment process. This involves sending the DER encoded output
82as MIME type application/x-x509-user-cert.
83
84The B<PEM> encoded form with the header and footer lines removed can be used to
85install user certificates and CAs in MSIE using the Xenroll control.
86
87=head1 SEE ALSO
88
89L<pkcs7(1)|pkcs7(1)>
90
91=cut
92