Thanks. Do you (or anyone else on this list) have a rough estimate of how much effort goes into implementing a new curve (e.g. JubJub) using Bouncy Castle (whether in the library or as an external extension)? I'm still trying to learn elliptic curve cryptography, and I'm trying to figure out if it's on the scale of a day, a week, or a month, if I only knew what I was doing.
I wonder if anyone here would consider a donation or freelance payment in exchange for coding up JubJub for me. ------------------------------ > *From:* Peter Dettman <peter.dett...@bouncycastle.org> > *Sent:* Monday, May 22, 2023 4:56 AM > *To:* andrewarn...@gmail.com <andrewarn...@gmail.com>; > dev-crypto-csharp@bouncycastle.org <dev-crypto-csharp@bouncycastle.org> > *Subject:* Re: [dev-crypto-csharp] How to implement the JubJub curve? > > Hi Andrew, > We do not currently have any JubJub implementation in C# or Java. > The class you mention is unknown to us, so is presumably a third-party > addition in some fork. > > Regards, > Pete Dettman > > On 22/05/2023 10:26 am, Andrew Arnott wrote: > > I'm implementing a portion of the Zcash protocol in C# and am looking for > a way to instantiate an elliptic curve for JubJub as described in the > Zcash protocol spec <https://zips.z.cash/protocol/protocol.pdf#jubjub>. > Apparently JubJub is "a complete twisted Edwards elliptic curve". > I even found (from Bing Chat) a reference to this class: > > org.bouncycastle.math.ec.custom.ed.TwistedEdwardsCurve > > But it was for the Java version of Bouncy Castle, and I couldn't found its > source anyway. > Is there such an implementation in C#? I wouldn't mind porting it from > Java if someone can direct me to the source. > > Thanks. > -- > Andrew Arnott > "I [may] not agree with what you have to say, but I'll defend to the death > your right to say it." - S. G. Tallentyre > > >
