openssl-pkcs7 (1)

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NAME

openssl-pkcs7, pkcs7 - PKCS#7 utility

SYNOPSIS

openssl pkcs7 [-help] [-inform PEM|DER] [-outform PEM|DER] [-in filename] [-out filename] [-print_certs] [-text] [-noout] [-engine id]

DESCRIPTION

The pkcs7 command processes PKCS#7 files in or format.

OPTIONS

-help

Print out a usage message.

-inform DER|PEM

This specifies the input format.

DER

format is

DER

encoded PKCS#7 v1.5 structure.

PEM

(the default) is a base64 encoded version of the

DER

form with header and footer lines.

-outform DER|PEM

This specifies the output format, the options have the same meaning as the -inform option.

-in filename

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

-out filename

specifies the output filename to write to or standard output by default.

-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.

-text

prints out certificates details in full rather than just subject and issuer names.

-noout

don't output the encoded version of the PKCS#7 structure (or certificates is -print_certs is set).

-engine id

specifying an engine (by its unique id string) will cause pkcs7 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.

EXAMPLES

Convert a PKCS#7 file from to

 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

NOTES

The 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-----

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

they cannot currently parse, for example, the new as described in

SEE ALSO

crl2pkcs7(1)

COPYRIGHT

Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the ``License''). You may not use this file except in compliance with the License. You can obtain a copy in the file

in the source distribution or at <www.openssl.org/source/license.html>.