On Sat, Jan 24, 2026 at 8:48 AM Ted Mittelstaedt <[email protected]> wrote: > > You need teraterm 4.107 or later. Many of the older commercial versions of > SSH (WRQ, SecureCRT) with fancy specialty emulations don’t support it either. > Windows and MacOS also don't appear (yet) to support ed25519 in the OS
Not sure anyone here is constrained by Windows or commercial ssh clients. At least on my one MacOS device (15.7.3): $ /usr/bin/ssh -V ; /usr/bin/ssh -Q key OpenSSH_9.9p2, LibreSSL 3.3.6 ssh-ed25519 [email protected] [email protected] [email protected] ecdsa-sha2-nistp256 [email protected] ecdsa-sha2-nistp384 [email protected] ecdsa-sha2-nistp521 [email protected] [email protected] [email protected] ssh-dss [email protected] ssh-rsa [email protected] and the homebrew version looks very similar, if a new version of OpenSSH. > Your also going to have a LOT of trouble with OpenWRT. For some stupid > reason the devs decided to drop the ed25519 in the small_flash builds of > dropbear which as OpenWRT continues it's path towards gut-exploding obesity, > is increasing being used for more and more devices. From package/network/services/dropbear/Config.in config DROPBEAR_ED25519 bool "Ed25519" default y if !SMALL_FLASH help This enables the following public key algorithm: * ssh-ed25519 Along with FIDO/U2F also enables the following public key algorithm: * [email protected] Ed25519 uses Curve25519 and SHA512 and is faster than RSA and ECDSA. Default: enabled, except devices with very small flash. however, it's my recommendation to walk the extra 30 feet and pretty easily avoid "very small flash" devices. $5 will get you there (based on a quick survey of facebook marketplace). -- Russell Senior [email protected]
