OPENSSL-NSEQ(1SSL)

📦
version 4.0.3 · 13 versions
, in ubuntu stonking

✨ OPENSSL-NSEQ ✨

okay so bestie, welcome to openssl-nseq from the OpenSSL manual pages 💖 this one is a lil vintage, a lil niche, and honestly it's giving "archive footage of the early internet" in the best way possible 🎀

🌸 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 👑

so basically, this command does two things depending on the vibe you're going for, and it's honestly iconic:

  • you hand it a file that already contains a Netscape certificate sequence, and it prints out all the certificates chillin' inside it 📜
  • OR you hand it a file full of certificates, and it turns that into a Netscape certificate sequence ✨

and like, what even IS a Netscape certificate sequence? bestie, it's an old Netscape-specific format 🫶 it could sometimes be sent to browsers as an alternative to the standard PKCS#7 format when several certificates get sent to the browser — for example during certificate enrollment. it was also used by Netscape certificate server. no cap, that's the whole lore 🧚

⭐ OPTIONS ⭐

  • -help — prints out a usage message so you're not lost, queen 🫶
  • -in filename — this specifies the input filename to read 💖 or, if you don't specify this option at all, it reads from standard input. lowkey convenient.
  • -out filename — specifies the output filename 🎀 or by default it goes to standard output. slay.
  • -toseq — okay so normally, a Netscape certificate sequence is the input, and the output is the certificates contained in it. but with -toseq the situation is literally reversed: a Netscape certificate sequence gets created from a file of certificates 🔥
  • -provider name
  • -provider-path path
  • -provparam [name:]key=value
  • -propquery propq — these ones all live together 👑 go check out "Provider Options" in openssl(1), provider(7), and property(7). iykyk 💅

🌈 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 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>.

and that's the whole page bestie, we ate and left no crumbs 💖 mwah 💋 this was version 4.0.3 dated 2026-09-29 — catch u later, stay encrypted 🌸✨🫶

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