[NMLUG] Signing a document with my SSH key, not a PGP key?

[kelly.terry.jones at gmail.com (Kelly Jones)]

I want to sign a document with ~/.ssh/id_dsa so that people who have
my public SSH key (~/.ssh/id_dsa.pub) can confirm that it's from me. I
don't want to encrypt the document, just sign it.

How can I do this? Is it a good idea? Does ssh-keysign (which is
disabled by default) play into it?

I know how to sign things using a PGP key, but was wondering if an SSH
key would work as well?

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