OPENSSL-NSEQ(1) | OpenSSL | OPENSSL-NSEQ(1)

# NAME

openssl-nseq - create or examine a Netscape certificate sequence

# SYNOPSIS

openssl nseq [-help] [-in filename] [-out filename] [-toseq] [-provider name] [-provider-path path] [-provparam [name:]key=value] [-propquery propq]

# DESCRIPTION

This command takes a file containing a Netscape certificate sequence and prints out the certificates contained in it or takes a file of certificates and converts it into a Netscape certificate sequence.

A Netscape certificate sequence is an old Netscape-specific format that can be sometimes be sent to browsers as an alternative to the standard PKCS#7 format when several certificates are sent to the browser, for example during certificate enrollment. It was also used by Netscape certificate server.

# OPTIONS

-help
  Print out a usage message.
-in filename
  This specifies the input filename to read or standard input if this option is not specified.
-out filename
  Specifies the output filename or standard output by default.
-toseq
  Normally a Netscape certificate sequence will be input and the output is the certificates contained in it. With the -toseq option the situation is reversed: a Netscape certificate sequence is created from a file of certificates.
-provider name
-provider-path path
-provparam [name:]key=value
-propquery propq
  See "Provider Options" in openssl(1), provider(7), and property(7).

# EXAMPLES

Output the certificates in a Netscape certificate sequence

     openssl nseq -in nseq.pem -out certs.pem

Create a Netscape certificate sequence

     openssl nseq -in certs.pem -toseq -out nseq.pem

# COPYRIGHT

Copyright 2000-2020 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 <https://www.openssl.org/source/license.html>.

2025-07-18 | 3.5.1