[curves] General Curve25519 and Ed25519 Libraries

[str4d]

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On 06/18/2015 09:27 AM, Frank Wang 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?

If you are willing to use Java, you can look at my Ed25519 library[0].
It exposes addition, subtraction and scalar multiplication operations
on EdDSA group elements.

Some Ed25519 libraries in other languages are listed here[1], but I
don't know what operations they expose.

str4d

[0] https://github.com/str4d/ed25519-java
[1]
https://stackoverflow.com/questions/19147619/what-implementions-of-ed255
19-exist

> 
> Thanks, Frank
> 
> 
> 
> _______________________________________________ Curves mailing
> list Curves at moderncrypto.org 
> https://moderncrypto.org/mailman/listinfo/curves
> 
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