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ssh-keygen is a standard component of the Secure Shell (SSH) protocol suite found on Unix, Unix-like and Microsoft Windows computer systems used to establish secure shell sessions between remote computers over insecure networks, through the use of various cryptographic techniques.
This output would be produced by a ssh-keygen -r host.example.com. command on the target server by reading the existing default SSH host key (Ed25519). [5] With the OpenSSH suite, the ssh-keyscan utility can be used to determine the fingerprint of a host's key; using the -D will print out the SSHFP record directly. [6]
Although source code is available for the original SSH, various restrictions are imposed on its use and distribution. OpenSSH was created as a fork of Björn Grönvall's OSSH that itself was a fork of Tatu Ylönen's original free SSH 1.2.12 release, [13] which was the last one having a license suitable for forking.
PuTTY (/ ˈ p ʌ t i /) [4] is a free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, and raw socket connection. It can also connect to a serial port. The name "PuTTY" has no official meaning. [5]
Secure Shell (SSH) is a protocol allowing secure remote login to a computer on a network using public-key cryptography.SSH client programs (such as ssh from OpenSSH) typically run for the duration of a remote login session and are configured to look for the user's private key in a file in the user's home directory (e.g., .ssh/id_rsa).
A 2019 draft of "FIPS 186-5" notes the intention to allow usage of Ed25519 [24] for digital signatures. The 2023 update of Special Publication 800-186 allows usage of Curve25519. [25] In February 2017, the DNSSEC specification for using Ed25519 and Ed448 was published as RFC 8080, assigning algorithm numbers 15 and 16. [26]
An SSH client is a software program which uses the secure shell protocol to connect to a remote computer. This article compares a selection of notable clients. This article compares a selection of notable clients.
Linux HP-UX Java macOS Solaris Windows Bitvise SSH Server Bitvise Limited 2001 Windows 9.32 [2] [3] 2023-12-20 Proprietary [a] CopSSH: Itefix 2003-08-12 Cygwin 7.10.1 [4] 2022-06-21 Proprietary: Windows CrushFTP Server: CrushFTP, LLC 2003-01-01 AIX 10.2.0 [5] 2022-04-05 Proprietary [b] BSD Cygwin Linux HP-UX Java macOS Solaris Windows Dropbear ...