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A comment on Sign arbitrary data with your SSH keys.

Re:Sign arbitrary data with your SSH keys by teekert on Saturday November 13, 2021 @09:26AM (#29209947)
Is it possible to encrypt something with an ssh pubkey and then decrypt with the corresponding privkey? GPG-style?
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Re:Sign arbitrary data with your SSH keys by fanf2 on Saturday November 13, 2021 @11:50AM (#29211146)
Yes, with https://github.com/FiloSottile/age
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Re:Sign arbitrary data with your SSH keys by Gargyle on Saturday November 13, 2021 @09:29AM (#29209956)
That happens as part of the ssh handshake. And is the basis of this whole scheme. No idea if there is tooling to.do.that for arbitrary messages.
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