pkcs7.pod revision 325337 
1=pod
2
3=head1 NAME
4
5openssl-pkcs7,
6pkcs7 - PKCS#7 utility
7
8=head1 SYNOPSIS
9
10B<openssl> B<pkcs7>
11[B<-inform PEM|DER>]
12[B<-outform PEM|DER>]
13[B<-in filename>]
14[B<-out filename>]
15[B<-print_certs>]
16[B<-text>]
17[B<-noout>]
18[B<-engine id>]
19
20=head1 DESCRIPTION
21
22The B<pkcs7> command processes PKCS#7 files in DER or PEM format.
23
24=head1 COMMAND OPTIONS
25
26=over 4
27
28=item B<-inform DER|PEM>
29
30This specifies the input format. B<DER> format is DER encoded PKCS#7
31v1.5 structure.B<PEM> (the default) is a base64 encoded version of
32the DER form with header and footer lines.
33
34=item B<-outform DER|PEM>
35
36This specifies the output format, the options have the same meaning as the 
37B<-inform> option.
38
39=item B<-in filename>
40
41This specifies the input filename to read from or standard input if this
42option is not specified.
43
44=item B<-out filename>
45
46specifies the output filename to write to or standard output by
47default.
48
49=item B<-print_certs>
50
51prints out any certificates or CRLs contained in the file. They are
52preceded by their subject and issuer names in one line format.
53
54=item B<-text>
55
56prints out certificates details in full rather than just subject and
57issuer names.
58
59=item B<-noout>
60
61don't output the encoded version of the PKCS#7 structure (or certificates
62is B<-print_certs> is set).
63
64=item B<-engine id>
65
66specifying an engine (by its unique B<id> string) will cause B<pkcs7>
67to attempt to obtain a functional reference to the specified engine,
68thus initialising it if needed. The engine will then be set as the default
69for all available algorithms.
70
71=back
72
73=head1 EXAMPLES
74
75Convert a PKCS#7 file from PEM to DER:
76
77 openssl pkcs7 -in file.pem -outform DER -out file.der
78
79Output all certificates in a file:
80
81 openssl pkcs7 -in file.pem -print_certs -out certs.pem
82
83=head1 NOTES
84
85The PEM PKCS#7 format uses the header and footer lines:
86
87 -----BEGIN PKCS7-----
88 -----END PKCS7-----
89
90For compatibility with some CAs it will also accept:
91
92 -----BEGIN CERTIFICATE-----
93 -----END CERTIFICATE-----
94
95=head1 RESTRICTIONS
96
97There is no option to print out all the fields of a PKCS#7 file.
98
99This PKCS#7 routines only understand PKCS#7 v 1.5 as specified in RFC2315 they 
100cannot currently parse, for example, the new CMS as described in RFC2630.
101
102=head1 SEE ALSO
103
104L<crl2pkcs7(1)|crl2pkcs7(1)>
105
106=cut
107