On Jun 12, 2015, at 12:08 PM, Michael Hamburg <[email protected]> wrote:
> Would be nice if new curves support a=-3. Would be even nicer if prime > order. Would be nice if sqrt(b) doesn’t exist. Unfortunately with > curve25519, sqrt(b) does exist in short Weierstrass form and a=-3 not > possible. Can you please elaborate on this a bit? Why is it desirable if sqrt(b) doesn’t exist, and to set a=-3?
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