openssl-pkcs7.1

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.IX Title "OPENSSL-PKCS7 1ossl"
.TH OPENSSL-PKCS7 1ossl 2026-01-27 3.5.5 OpenSSL
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.SH NAME
openssl\-pkcs7 \- PKCS#7 command
.SH SYNOPSIS
.IX Header "SYNOPSIS"
\&\fBopenssl\fR \fBpkcs7\fR
[\fB\-help\fR]
[\fB\-inform\fR \fBDER\fR|\fBPEM\fR]
[\fB\-outform\fR \fBDER\fR|\fBPEM\fR]
[\fB\-in\fR \fIfilename\fR]
[\fB\-out\fR \fIfilename\fR]
[\fB\-print\fR]
[\fB\-print_certs\fR]
[\fB\-quiet\fR]
[\fB\-text\fR]
[\fB\-noout\fR]
[\fB\-engine\fR \fIid\fR]
[\fB\-provider\fR \fIname\fR]
[\fB\-provider\-path\fR \fIpath\fR]
[\fB\-provparam\fR \fI[name:]key=value\fR]
[\fB\-propquery\fR \fIpropq\fR]
.SH DESCRIPTION
.IX Header "DESCRIPTION"
This command processes PKCS#7 files.  Note that it only understands PKCS#7
v 1.5 as specified in IETF RFC 2315.  It cannot currently parse CMS as
described in IETF RFC 2630.
.SH OPTIONS
.IX Header "OPTIONS"
.IP \fB\-help\fR 4
.IX Item "-help"
Print out a usage message.
.IP "\fB\-inform\fR \fBDER\fR|\fBPEM\fR, \fB\-outform\fR \fBDER\fR|\fBPEM\fR" 4
.IX Item "-inform DER|PEM, -outform DER|PEM"
The input and formats; the default is \fBPEM\fR.
See \fBopenssl\-format\-options\fR\|(1) for details.
.Sp
The data is a PKCS#7 Version 1.5 structure.
.IP "\fB\-in\fR \fIfilename\fR" 4
.IX Item "-in filename"
This specifies the input filename to read from or standard input if this
option is not specified.
.IP "\fB\-out\fR \fIfilename\fR" 4
.IX Item "-out filename"
Specifies the output filename to write to or standard output by
default.
.IP \fB\-print\fR 4
.IX Item "-print"
Print out the full PKCS7 object.
.IP \fB\-print_certs\fR 4
.IX Item "-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.
.IP \fB\-quiet\fR 4
.IX Item "-quiet"
When used with \-print_certs, prints out just the PEM\-encoded 
certificates without any other output.
.IP \fB\-text\fR 4
.IX Item "-text"
Prints out certificate details in full rather than just subject and
issuer names.
.IP \fB\-noout\fR 4
.IX Item "-noout"
Don\*(Aqt output the encoded version of the PKCS#7 structure (or certificates
if \fB\-print_certs\fR is set).
.IP "\fB\-engine\fR \fIid\fR" 4
.IX Item "-engine id"
See "Engine Options" in \fBopenssl\fR\|(1).
This option is deprecated.
.IP "\fB\-provider\fR \fIname\fR" 4
.IX Item "-provider name"
.PD 0
.IP "\fB\-provider\-path\fR \fIpath\fR" 4
.IX Item "-provider-path path"
.IP "\fB\-provparam\fR \fI[name:]key=value\fR" 4
.IX Item "-provparam [name:]key=value"
.IP "\fB\-propquery\fR \fIpropq\fR" 4
.IX Item "-propquery propq"
.PD
See "Provider Options" in \fBopenssl\fR\|(1), \fBprovider\fR\|(7), and \fBproperty\fR\|(7).
.SH EXAMPLES
.IX Header "EXAMPLES"
Convert a PKCS#7 file from PEM to DER:
.PP
.Vb 1
\& openssl pkcs7 \-in file.pem \-outform DER \-out file.der
.Ve
.PP
Output all certificates in a file:
.PP
.Vb 1
\& openssl pkcs7 \-in file.pem \-print_certs \-out certs.pem
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBopenssl\fR\|(1),
\&\fBopenssl\-crl2pkcs7\fR\|(1)
.SH HISTORY
.IX Header "HISTORY"
The \fB\-engine\fR option was deprecated in OpenSSL 3.0.
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright 2000\-2022 The OpenSSL Project Authors. All Rights Reserved.
.PP
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
<https://www.openssl.org/source/license.html>.