SSH EDCSA & vs ED25519: What's the story?

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Now that OpenSSH 6.6 is out and on its way to the various distros
packagers, I've decided it's time to upgrade all my ssh keys.

In reading the man page for ssh-keygen, I note support for both edcsa
and ed25519 keys. But, how do I choose between these? I've looked, but
am not finding any explanation of the differences, and why one might
chose one over the other.

Also, the man page notes that bit lengths of 256, 384 and 521 are the
only supported bit rates for edcsa keys. Is that last number an error,
i.e. transposed chars?

Janina



-- 

Janina Sajka,	Phone:	+1.443.300.2200
			sip:janina@xxxxxxxxxxxxxxxxxxxx
		Email:	janina@xxxxxxxxxxx

Linux Foundation Fellow
Executive Chair, Accessibility Workgroup:	http://a11y.org

The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair,	Protocols & Formats	http://www.w3.org/wai/pf
	Indie UI			http://www.w3.org/WAI/IndieUI/

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