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ssh-keygen is a standard component of the Secure Shell ... ECDSA id_ecdsa. id_ecdsa.pub. ed25519 ... Code of Conduct; Developers;
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]
Notable uses of Ed25519 include OpenSSH, [19] GnuPG [20] and various alternatives, and the signify tool by OpenBSD. [21] Usage of Ed25519 (and Ed448) in the SSH protocol has been standardized. [22] In 2023 the final version of the FIPS 186-5 standard included deterministic Ed25519 as an approved signature scheme. [15]
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]
Accredited Standards Committee X9, ASC X9 Issues New Standard for Public Key Cryptography/ECDSA, Oct. 6, 2020. Source; Accredited Standards Committee X9, American National Standard X9.62-2005, Public Key Cryptography for the Financial Services Industry, The Elliptic Curve Digital Signature Algorithm (ECDSA), November 16, 2005.
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.
They underpin numerous Internet standards, such as Transport Layer Security (TLS), SSH, S/MIME, and PGP. Compared to symmetric cryptography, public-key cryptography can be too slow for many purposes, [4] so these protocols often combine symmetric cryptography with public-key cryptography in hybrid cryptosystems.
I thought the default ECDSA in ssh-keygen was using curve p256, and curve25519 was treated as a different key type. Either way, the maximum key length of those is below the article's stated minimum of 768 bits. This article needs some updating. Jbo5112 19:54, 20 July 2016 (UTC)