Lsh

---

title: "Lsh" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["gnu-project-software", "unix-network-related-software", "free-security-software", "free-network-related-software", "secure-shell"] description: "Cryptographic network protocol" topic_path: "technology/operating-systems" source: "https://en.wikipedia.org/wiki/Lsh" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Cryptographic network protocol ::

::data[format=table title="Infobox software"]

Field	Value
name	lsh
developer	Niels Möller
released
latest release version
latest release date
latest preview version
latest preview date
operating_system	Unix-like
genre	Networking, Security
license	GPL-2.0-or-later
website
::

| name = lsh | logo = | caption = | screenshot = | developer = Niels Möller | released = | latest release version = | latest release date = | latest preview version = | latest preview date = | operating_system = Unix-like | genre = Networking, Security | license = GPL-2.0-or-later | website = lsh is a copyleft implementation of the Secure Shell (SSH) protocol version 2, by the GNU Project besides, public-key authentication. Kerberos is somewhat supported as well. Currently however for password verification only, not as a single sign-on (SSO) method.

lsh was started from scratch and predates OpenSSH.

Karim Yaghmour concluded in 2003 that lsh was "not fit for use" in production embedded Linux systems, because of its dependencies upon other software packages that have a multiplicity of further dependencies. The lsh package requires the GNU MP library, zlib, and liboop, the latter of which in turn requires GLib, which then requires pkg-config. Yaghmour further notes that lsh suffers from cross-compilation problems that it inherits from glib. "If ... your target isn't the same architecture as your host," he states, "LSH isn't a practical choice at this time."

Debian provides packages of lsh as lsh-server, lsh-utils, lsh-doc and lsh-client.

References

References

1. "Initial release of snapshot version of lsh".
2. Moller nisse@lysator.liu.se, Niels. (30 March 2001). "Using the SRP protocol as a key exchange method in Secure Shell".
3. "Archived copy".
4. (2020-05-30). "Comparison of SSH servers". Wikipedia.
5. "Debian -- Package Search Results -- lsh-server".
6. "Debian -- Error".
7. Jon Lasser. (2000). "Think UNIX". Que Publishing.
8. Roderick W. Smith. (2005). "Linux in a Windows world". O'Reilly Media, Inc..
9. Karim Yaghmour. (2003). "Building embedded Linux systems". O'Reilly Media, Inc..
10. "GNU - Free Software Directory".
11. "Lsh - Free Software Directory".

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::