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Developer(s)Niels Möller
Initial releaseSeptember 1998; 21 years ago (1998-09)[1]
Stable release
v2.1 / June 26, 2013; 6 years ago (2013-06-26)
Repository Edit this at Wikidata
Operating systemUnix-like
TypeNetworking, Security

lsh is a free software implementation of the Secure Shell (SSH) protocol version 2, by the GNU Project[2][3][4][5] including both server and client programs. Featuring Secure Remote Password protocol (SRP) as specified in secsh-srp[6][7] besides, public-key authentication. Kerberos is somewhat supported as well.[citation needed] Currently however for password verification only, not as a single sign-on (SSO) method.[citation needed]

lsh was started from scratch and predates OpenSSH, a more popular alternative.[citation needed]

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."[8]

Debian provides packages of lsh as lsh-server,[9] lsh-utils, lsh-doc and lsh-client.[10]

See also[edit]


  1. ^ "Initial release of snapshot version of lsh".
  2. ^ Jon Lasser (2000). Think UNIX. Que-Consumer-Other Series. Que Publishing. p. 104. ISBN 9780789723765.
  3. ^ Roderick W. Smith (2005). Linux in a Windows world. O'Reilly Media, Inc. p. 227. ISBN 9780596007584.
  4. ^
  5. ^ "Lsh - Free Software Directory". Retrieved 16 January 2019.
  6. ^ Moller <>, Niels. "Using the SRP protocol as a key exchange method in Secure Shell". Retrieved 16 January 2019.
  7. ^
  8. ^ Karim Yaghmour (2003). Building embedded Linux systems. O'Reilly Media, Inc. p. 300. ISBN 9780596002220.
  9. ^ "Debian -- Package Search Results -- lsh-server". Retrieved 16 January 2019.
  10. ^ "Debian -- Error". Retrieved 16 January 2019.

External links[edit]