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This article is based on material taken from the Free On-line Dictionary of Computing prior to 1 November 2008 and incorporated under the "relicensing" terms of the GFDL, version 1.3 or later.

To-do list for Secure Shell: edit · history · watch · refresh · Updated 2021-08-01 There are no active tasks for this page The article is very technical and strongly relies on the knowledge of all underlying concepts to understand what ssh is. Start the article with an introduction of what ssh is which is more readable and move the current definition into a section called "definition". Introduce how ssh can use public-key cryptography to enable a user to use passphrase-locked private keys in order to open a ssh connection. Currently there is a section "How it works - by analogy" at the end, but there is a gap because it's never explained how public-key cryprography is used in ssh, so this section should either be removed or (preferably) be embedded in an explanation how the concept of public-key crytography is used in ssh. Renamed the section now to "How ssh uses public-key cryptography (with analogy)" and cleaned it up a bit. For example, I replaced the references to the reader using "You" and "Your" with "the user" and "the user's". It still needs more improvement to be understandable by someone who does not know ssh at all. As far as I see, in that paragraph the basics of pulic key cryptography are described by analogy, but nothing's said about how ssh uses this principle to identify the user. I would recommand that this paragraph be removed (Or maybe moved to p.k.c.) and be written from scrach (if someone wants it), if you asked for my single honest opinion. PLEASE, get rid of this paragraph. It is horribly written and offers a pitifully simplistic analogy for the sake of accessibility. There is nothing special about SSH's use of public-key cryptography, so rather than a bad intro to public-key crypto, let's just send the reader to its proper article? I would erase this paragraph but I tried once and got reverted. Alg8662 06:45, 16 November 2007 (UTC)

This article may be too technical for most readers to understand. Please help improve it to make it understandable to non-experts, without removing the technical details. (September 2010) (Learn how and when to remove this message)

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Moved from my talk User talk:Widefox:

According to RFC, SSH stands for secure shell, so why change it?

ShiinaKaze (talk) 01:16, 27 December 2024 (UTC)[reply]

Thanks ShiinaKaze. There's two (separate) things to fix - let's move this here. Widefox; talk 02:11, 27 December 2024 (UTC)[reply]

So this was previously styled:

• The Secure Shell Protocol (SSH) [1], then
• The Secure Shell (SSH) Protocol [2] - this is per the RFC (primary source)

then I reverted to the former [3], to keep in line with MOS ACRO - the acro shouldn't be in bold brackets, but be after the expansion as an alternative name (in bold, but without bold brackets).

• The Secure Shell Protocol (SSH Protocol) - arguably the most correct. Widefox; talk 02:11, 27 December 2024 (UTC)[reply]

I notice that Usenet has been fading away. The fading has been accelerating ever since the Usenet archives from Deja News were capture by Google. In preparation for the day when Google inevitably pulls the plug on the old Usenet post archives, including those from comp.security.unix, we should cache a copy of Tatu's announcement on Wikisource.

The Google Archive of Usenet posts diminished further two years ago:

Starting on February 22, 2024, you can no longer use Google Groups (at groups.google.com) to post content to Usenet groups, subscribe to Usenet groups, or view new Usenet content. You can continue to view and search for historical Usenet content posted before February 22, 2024 on Google Groups.

— https://support.google.com/groups/answer/11036538

In other words, it seems like there is a hurry to make our own copy of the following original announcement,

https://groups.google.com/group/comp.security.unix/msg/67079d812a19f499?dmode=source&hl=en

over at at Wikisource at the following address,

https://en.wikisource.org/wiki/Tatu_Yl%C3%B6nen_(12-July-1995)_Announcement:_Ssh_(Secure_Shell)_Remote_Login_Program

Sadly the whole message (headers and all) is not available there from Google, even when logged into their service. From the remaining limited functionality there I do not see how to capture the message headers (metadata) properly. Otherwise I'd copy the message right away. Those headers are a key part of the historical importance of the announcement. We'd need the unchanged original to verify the signature etc. I checked The Internet Archive and they also have only the stripped-down version of the announcement.

tldr; How to retrieve the full message, including headers, for Usenet messages from Google's Usenet archive? Perhaps someone here has elevated read-only access?

— Larsnooden (talk) 15:12, 11 May 2026 (UTC)[reply]

There is an mbox archive of the Usenet comp.* hierarchy at The Internet Archive and made an initial extraction at Wikisource pending the ability to verify it using the old standards used to sign it. When / if it checks out, we can point the main article to Wikisource instead of Google then. — Larsnooden (talk) 12:38, 17 May 2026 (UTC)[reply]

@Kvng, if the original document is relevant to the [Secure_Shell SSH article], then it might be useful to comment on the pending deletion there at Wikisource. I was able to track down Tatu Ylönen's original announcement about SSH and, within the constraints of the algorithms of the time, verify it. Should the document be preserved and, if so, how much of the OpenPGP verification process should be included there? — Larsnooden (talk) 05:01, 20 May 2026 (UTC)[reply]