[curves] General Curve25519 and Ed25519 Libraries

Tony Arcieri bascule at gmail.com
Wed Jun 17 14:33:04 PDT 2015

TweetNaCl has Ed25519 scalar multiplication? That's news to me...

On Wed, Jun 17, 2015 at 2:16 PM, Frank Wang <frankw at mit.edu> wrote:

> Hi,
> I am working on a research project at MIT, and I need to use elliptic
> curves (or a group where DDH is hard, but elliptic curves seem like the
> best way to go) to implement a cryptographic scheme. I've been trying to
> search for general Curve25519 and Ed25519 libraries where I can just do add
> and scalar multiply as well as hash messages to points. The best library
> I've come across so far is tweetnacl, which has the add and scalar multiply
> operation for Ed25519, but it's a bit difficult to use, and I end up
> modifying the library to do subtraction of points.
> I have yet to find a good library that allows me to just do operations on
> Ed25519 or Curve25519. Does such a library exist? If not, any tips on what
> I should do? Should I just use another curve library that is better
> supported? If so, any suggestions?
> Thanks,
> Frank
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Tony Arcieri
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