XPost: uk.comp.os.linux   
   From: invalid@invalid.invalid   
      
   Java Jive  writes:   
   > On 24/08/2024 09:51, Richard Kettlewell wrote:   
   >> Java Jive  writes:   
   >>>   
   >>> As per subject, I have a number of Windows 7 PCs which are running an   
   >>> old-ish 32-bit version of ssh via CygWin and PuTTy.  Several of these   
       ^^^^^^^   
      
   What version exactly?   
      
   >>> debug1: Offering public key: /user/.ssh/id_rsa.pub RSA SHA256:>> unknown key, not the one in id_rsa or id_rsa.pub> explicit   
   >>> debug1: send_pubkey_test: no mutual signature algorithm   
   >> The server did not accept your key.   
   >   
   > Really odd, seeing it accepts exactly the same key from Windows 7 and   
   > formerly Ubuntu 18.   
      
   If the client is attempted SHA1-based signature that would probably also   
   be rejected by a modern server. I’m not convinced that’s a likely   
   explanation since based on the debug trace it is using SHA256 key hashes   
   and understands SHA2 ECDSA signatures.   
      
   At this point I’d be reaching for server-side debug logging to shed some   
   light on why the server doesn’t like your key (or at least the signature   
   it makes).   
      
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