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|
=pod
=head1 NAME
openssl-pkcs7 - PKCS#7 utility
=head1 SYNOPSIS
B<openssl> B<pkcs7>
[B<-help>]
[B<-inform> B<DER>|B<PEM>]
[B<-outform> B<DER>|B<PEM>]
[B<-in> I<filename>]
[B<-out> I<filename>]
[B<-print_certs>]
[B<-text>]
[B<-noout>]
[B<-engine> I<id>]
=for comment ifdef engine
=head1 DESCRIPTION
This command processes PKCS#7 files in DER or PEM format.
=head1 OPTIONS
=over 4
=item B<-help>
Print out a usage message.
=item B<-inform> B<DER>|B<PEM>
This specifies the input format. B<DER> format is DER encoded PKCS#7
v1.5 structure.B<PEM> (the default) is a base64 encoded version of
the DER form with header and footer lines.
=item B<-outform> B<DER>|B<PEM>
This specifies the output format, the options have the same meaning and default
as the B<-inform> option.
=item B<-in> I<filename>
This specifies the input filename to read from or standard input if this
option is not specified.
=item B<-out> I<filename>
Specifies the output filename to write to or standard output by
default.
=item B<-print_certs>
Prints out any certificates or CRLs contained in the file. They are
preceded by their subject and issuer names in one line format.
=item B<-text>
Prints out certificates details in full rather than just subject and
issuer names.
=item B<-noout>
Don't output the encoded version of the PKCS#7 structure (or certificates
is B<-print_certs> is set).
=item B<-engine> I<id>
Specifying an engine (by its unique I<id> string) will cause this command
to attempt to obtain a functional reference to the specified engine,
thus initialising it if needed. The engine will then be set as the default
for all available algorithms.
=back
=head1 EXAMPLES
Convert a PKCS#7 file from PEM to DER:
openssl pkcs7 -in file.pem -outform DER -out file.der
Output all certificates in a file:
openssl pkcs7 -in file.pem -print_certs -out certs.pem
=head1 NOTES
The PEM PKCS#7 format uses the header and footer lines:
-----BEGIN PKCS7-----
-----END PKCS7-----
For compatibility with some CAs it will also accept:
-----BEGIN CERTIFICATE-----
-----END CERTIFICATE-----
=head1 RESTRICTIONS
There is no option to print out all the fields of a PKCS#7 file.
This PKCS#7 routines only understand PKCS#7 v 1.5 as specified in RFC2315 they
cannot currently parse, for example, the new CMS as described in RFC2630.
=head1 SEE ALSO
L<openssl(1)>,
L<openssl-crl2pkcs7(1)>
=head1 COPYRIGHT
Copyright 2000-2019 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the Apache License 2.0 (the "License"). You may not use
this file except in compliance with the License. You can obtain a copy
in the file LICENSE in the source distribution or at
L<https://www.openssl.org/source/license.html>.
=cut
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