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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 27 May 2020
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      Hector Martin Retweeted Julio

      I hope we can shoehorn rsa-sha2-256 into working with Yubikeys and other hardware tokens, or else they've just become rather useless.https://twitter.com/juliocesarfort/status/1265541783741706241 …

      Hector Martin added,

      Julio @juliocesarfort
      important announcement from OpenSSH. pic.twitter.com/lsTkz04hZU
      Show this thread
      2 replies 4 retweets 25 likes
      Show this thread
    2. the vessel of morganna‏ @astraleureka 27 May 2020
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      Replying to @marcan42

      This change is regarding host keys, not authentication keypairs.

      1 reply 0 retweets 0 likes
    3. Hector Martin‏ @marcan42 27 May 2020
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      Replying to @astraleureka

      Aren't they exactly the same thing?

      1 reply 0 retweets 0 likes
    4. the vessel of morganna‏ @astraleureka 27 May 2020
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      Replying to @marcan42

      Technically yes, but the deprecation is only for host keys. Keypairs used for auth don't generally have their fingerprint verified. On the other hand, first time attempting a host will ask for manual verification of host key fingerprint.

      2 replies 0 retweets 1 like
    5. emily‏ @lambdakitten 27 May 2020
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      Replying to @astraleureka @marcan42

      oh that makes a lot of sense they really worded the announcement in the most confusing way possible

      1 reply 0 retweets 2 likes
    6. emily‏ @lambdakitten 27 May 2020
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      Replying to @lambdakitten @astraleureka @marcan42

      I can't tell if `ssh-keygen -t rsa` even creates the deprecated thing or not with modern OpenSSH

      1 reply 0 retweets 0 likes
    7. Hector Martin‏ @marcan42 27 May 2020
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      Replying to @lambdakitten @astraleureka

      I think it doesn't matter, it's the usage, but I need to test all this stuff because their announcement is rather unclear.

      2 replies 0 retweets 0 likes
    8. emily‏ @lambdakitten 27 May 2020
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      Replying to @marcan42 @astraleureka

      right, I guess the key itself doesn't necessarily contain a hash

      1 reply 0 retweets 0 likes
    9. Hector Martin‏ @marcan42 27 May 2020
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      Replying to @lambdakitten @astraleureka

      It doesn't, the keypair is the same format, but the hash to be used *with* it could be encoded in the keytype, or not.

      1 reply 0 retweets 0 likes
      Hector Martin‏ @marcan42 27 May 2020
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      Replying to @marcan42 @lambdakitten @astraleureka

      Given what I just found above, ssh-rsa keys are usable with SHA2 already (and that already happens by default).

      9:18 PM - 27 May 2020
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      • Dimitar Tomov the vessel of morganna
      0 replies 0 retweets 2 likes

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