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== Technology ==
== Technology ==
Dropbear implements version 2 of the Secure Shell (SSH) protocol.<ref>{{cite web|title=Ubuntu Manpage: dropbear - lightweight SSH2 server|url=http://manpages.ubuntu.com/manpages/maverick/man8/dropbear.8.html|work=Ubuntu.com web site|publisher=Canonical, Inc.|accessdate=20 June 2011}}</ref>
Dropbear implements version 2 of the Secure Shell (SSH) protocol.<ref>{{cite web|title=Ubuntu Manpage: dropbear - lightweight SSH2 server|url=http://manpages.ubuntu.com/manpages/maverick/man8/dropbear.8.html|work=Ubuntu.com web site|publisher=Canonical, Inc.|accessdate=20 June 2011|deadurl=yes|archiveurl=https://web.archive.org/web/20110916211711/http://manpages.ubuntu.com/manpages/maverick/man8/dropbear.8.html|archivedate=16 September 2011|df=}}</ref>


The cryptographic algorithms are implemented using third-party cryptographic libraries included internally in the Dropbear distribution. It derives some parts from OpenSSH to handle [[BSD]]-style [[pseudo terminal]]s.<ref>https://matt.ucc.asn.au/dropbear/dropbear.html Dropbear implementation details</ref>
The cryptographic algorithms are implemented using third-party cryptographic libraries included internally in the Dropbear distribution. It derives some parts from OpenSSH to handle [[BSD]]-style [[pseudo terminal]]s.<ref>https://matt.ucc.asn.au/dropbear/dropbear.html Dropbear implementation details</ref>

Revision as of 05:23, 14 September 2017

Dropbear
Developer(s)Matt Johnston
Initial releaseApril 2003, 06; 21 years ago (06-04-2003)
Repository
Written inC
Operating systemUnix-like
TypeRemote access
LicenseMIT license
Websitematt.ucc.asn.au/dropbear/dropbear.html

Dropbear is a software package written by Matt Johnston that provides a Secure Shell-compatible server and client. It is designed as a replacement for standard OpenSSH for environments with low memory and processor resources, such as embedded systems. It is a core component of OpenWrt and other router distributions.

Technology

Dropbear implements version 2 of the Secure Shell (SSH) protocol.[1]

The cryptographic algorithms are implemented using third-party cryptographic libraries included internally in the Dropbear distribution. It derives some parts from OpenSSH to handle BSD-style pseudo terminals.[2]

Features

Dropbear implements the complete SSH version 2 protocol in both the client and the server. It does not support SSH version 1 backwards-compatibility to save space and resources, and to avoid the inherent security vulnerabilities in SSH version 1. SCP is also implemented.[3] SFTP support relies on a binary file which can be provided by OpenSSH or similar programs. FISH works in any case and is supported e.g. by Konqueror. Supports elliptic curve cryptography for key exchange and public key authentication as of version 2013.62.[4]

See also

References

  1. ^ "Ubuntu Manpage: dropbear - lightweight SSH2 server". Ubuntu.com web site. Canonical, Inc. Archived from the original on 16 September 2011. Retrieved 20 June 2011. {{cite web}}: Unknown parameter |deadurl= ignored (|url-status= suggested) (help)
  2. ^ https://matt.ucc.asn.au/dropbear/dropbear.html Dropbear implementation details
  3. ^ https://secure.ucc.asn.au/hg/dropbear/file/5608a5a61c2a/scp.c
  4. ^ https://matt.ucc.asn.au/dropbear/CHANGES
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