Timeline for Cannot use "ecdsa" and "rsa" in parallel when using SFTP
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| S Dec 12, 2022 at 8:46 | history | suggested | not2savvy | CC BY-SA 4.0 |
fixed a typo
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| Dec 12, 2022 at 0:21 | review | Suggested edits | |||
| S Dec 12, 2022 at 8:46 | |||||
| Jul 18, 2022 at 14:47 | comment | added | Adam Katz |
You're right, the error from StrictHostKeyChecking=yes is rather explicit ("No ECDSA host key is known for localhost and you have requested strict checking.") If you cleared your ~/.ssh/known_hosts, then perhaps the issue is your GlobalKnownHostsFile, e.g. /etc/ssh/ssh_known_hosts, but that's not automatically populated.
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| Jul 16, 2022 at 13:21 | comment | added | becke-ch | OS: Ubuntu 20.04.4 LTS; SSH/SFTP/SSHD: OpenSSH_8.2p1 Ubuntu-4ubuntu0.4, OpenSSL 1.1.1f 31 Mar 2020; because the known_hosts file was quite long I just emptied it but the error/bug still occurrs and "-o StrictHostKeyChecking=ask" seems not working/fixing. I either get "Offending ECDSA key in ... known_hosts ..." or "Offending RSA key in ...". It seems an OpenSSH bug that these public key algorithms cannot coexist. And Strict Host Checking actually should not prevent that different algorithms can be used in parallel. Could you get it working? | |
| Jul 14, 2022 at 21:39 | comment | added | Adam Katz |
Could you comment on what your ~/.ssh/known_hosts looks like? Also, what are you running as the client (OS, sftp, OpenSSH versions)?
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| Jul 14, 2022 at 21:36 | comment | added | becke-ch | Hi Adam, no this is not working "-o StrictHostKeyChecking=ask" does not make any difference. Did you test it yourself? My local sshd and sftp is "OpenSSH_8.2p1 Ubuntu-4ubuntu0.4, OpenSSL 1.1.1f". | |
| Jul 14, 2022 at 20:53 | history | answered | Adam Katz | CC BY-SA 4.0 |