v0.1.0 candidate - support for EdDSA, Schnorr & fix dependencies

[oleiba]

• Support Schnorr (as in Zilliqa implementation)
• Support Ed25519
• Relevant tests added to integration-tests (all pass)
• bitcoin dependency upgraded to 0.20.0
• Dependencies to rely on fixed tagged versions

This PR extends and replaces #30 .

[omershlo]

I would like to explore other options as @gbenattar suggested

[omershlo]

Curv should not be split

[jeremyfelder]

Approved @gbenattar changes to DockerFile and tests

[gbenattar]

I am putting that PR on hold until @omershlo and @oleiba will have a a discussion about the dependency graph.

[oleiba]

After our discussion, changed multi-party-eddsa dependency to use tag [email protected].
It uses https://github.com/KZen-networks/curv-replica, a replica of https://github.com/KZen-networks/curv, and the specific tag points to same commit as tag v0.2.0 in the original repository.

[omershlo]

@oleiba have you tried to use package in Cargo.toml instead of curv2:
https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#renaming-dependencies-in-cargotoml

something like :
curv1 = { git = "https://github.com/KZen-networks/curv", version = "0.2.0", features = ['ec_secp256k1'], package = "curv" }
curv2 = { git = "https://github.com/KZen-networks/curv", version = "0.2.0", features = ['ec_ed25519'], package = "curv" }

[oleiba]

I have updated the Cargo.toml files with using multi-party-eddsa with tag v0.2.1 - this tag is used in https://github.com/multi-party-eddsa master branch, and uses the same commit of curv as the direct dependency here in gotham-city, but only with a different tag name (v0.2.0-ed25519 instead of v0.2.0).

This removes the need of an additional curv repository, and I think it solves the issue nicely.

[gbenattar]

@omershlo is it good to go on your side?

[omershlo]

still working on it.

[omershlo]

#28 ?

[omershlo]

I approve

[oleiba]

It seems that I can't merge without your "github" approval.
Can you please go to "Files changed" tab, "Review changes" and "approve"?

[burdges]

I'm curious: Why only two parties for a Schnorr signature?

[omershlo]

The Gotham city architecture includes a network stack.
For simplicity purposes we wanted to rely on a classical server<>client design where the client makes rest-api calls to the server to facilitate the protocol and so on. This way we avoid p2p and still get distributed computation (although with just 2 parties)