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A free and open implementation of the SSH communication security tools.
17
votes
Accepted
Understanding ssh-rsa not in PubkeyAcceptedAlgorithms
Since SHA-1 is insecure, OpenSSH disables the ssh-rsa signature algorithm since version 8.8. … If you cannot get a current OpenSSH version through your OS, then install OpenSSH independently.
Create a new SSH key with the ECDSA type (e. g. ecdsa-sha2-nistp256) or EdDSA rather than RSA. …
4
votes
Accepted
Can someone with access to only my Yubikey gain access to my server that has SSH access via ...
There are two options.
By default (i. e. if the -O resident parameter isn't set), nothing is stored on the YubiKey. Instead, the YubiKey generates a private key, encrypts it (and some metadata) with t …