crl2pkcs7.pod revision 59191 
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<pkcs7>
10[B<-inform PEM|DER>]
11[B<-outform PEM|DER>]
12[B<-in filename>]
13[B<-out filename>]
14[B<-print_certs>]
15
16=head1 DESCRIPTION
17
18The B<crl2pkcs7> command takes an optional CRL and one or more
19certificates and converts them into a PKCS#7 degenerate "certificates
20only" structure.
21
22=head1 COMMAND OPTIONS
23
24=over 4
25
26=item B<-inform DER|PEM>
27
28This specifies the CRL input format. B<DER> format is DER encoded CRL
29structure.B<PEM> (the default) is a base64 encoded version of
30the DER form with header and footer lines.
31
32=item B<-outform DER|PEM>
33
34This specifies the PKCS#7 structure output format. B<DER> format is DER
35encoded PKCS#7 structure.B<PEM> (the default) is a base64 encoded version of
36the DER form with header and footer lines.
37
38=item B<-in filename>
39
40This specifies the input filename to read a CRL from or standard input if this
41option is not specified.
42
43=item B<-out filename>
44
45specifies the output filename to write the PKCS#7 structure to or standard
46output by default.
47
48=item B<-certfile filename>
49
50specifies a filename containing one or more certificates in B<PEM> format.
51All certificates in the file will be added to the PKCS#7 structure. This
52option can be used more than once to read certificates form multiple
53files.
54
55=item B<-nocrl>
56
57normally a CRL is included in the output file. With this option no CRL is
58included in the output file and a CRL is not read from the input file.
59
60=back
61
62=head1 EXAMPLES
63
64Create a PKCS#7 structure from a certificate and CRL:
65
66 openssl crl2pkcs7 -in crl.pem -certfile cert.pem -out p7.pem
67
68Creates a PKCS#7 structure in DER format with no CRL from several
69different certificates:
70
71 openssl crl2pkcs7 -nocrl -certfile newcert.pem 
72	-certfile demoCA/cacert.pem -outform DER -out p7.der
73
74=head1 NOTES
75
76The output file is a PKCS#7 signed data structure containing no signers and
77just certificates and an optional CRL.
78
79This utility can be used to send certificates and CAs to Netscape as part of
80the certificate enrollment process. This involves sending the DER encoded output
81as MIME type application/x-x509-user-cert.
82
83The B<PEM> encoded form with the header and footer lines removed can be used to
84install user certificates and CAs in MSIE using the Xenroll control.
85
86=head1 SEE ALSO
87
88L<pkcs7(1)|pkcs7(1)>
89
90=cut
91