SignEcdsa is too slow

[lastagile]

SignEcdsa takes couple seconds, any way to make it quicker?

[alexberdreal]

Hello! Have you found the solution for this?

[xJonathanLEI]

Same issue here. Calling Sign() takes more than 7 seconds on my machine.

[xJonathanLEI]

It seems that turning on -O3 helps. Signing time drops from 7 seconds to 180 milliseconds on my machine. It's apparently still not ideal, but better than nothing.

[rbdm-qnt]

was this ever solved?

[xJonathanLEI]

@rbdm-qnt Nope but (shameless plug) if you use Rust then you can use starknet-crypto lol.

[rbdm-qnt]

@rbdm-qnt Nope but (shameless plug) if you use Rust then you can use starknet-crypto lol.

And is that one faster?

[xJonathanLEI]

Yeah it is. See the linked page for benchmark.

[rbdm-qnt]

Yeah it is. See the linked page for benchmark.

1ms or less vs 7 seconds/180 ms? I don't understand, there must be something terribly wrong with the c++ version? Even the python version takes 70-80ms only. Unfortunately I don't use Rust, my application is in C++ and I need a high performance version for that language

[xJonathanLEI]

Well you can use the Rust lib from C++ as well. You'll need to create a wrapper crate that exposes the C api but it's possible.

Honestly that's likely your best bet imo, as this repo doesn't seem to be maintained.

[rbdm-qnt]

Well you can use the Rust lib from C++ as well. You'll need to create a wrapper crate that exposes the C api but it's possible.

Honestly that's likely your best bet imo, as this repo doesn't seem to be maintained.

Wouldn't that have a big overhead? Never done that

[xJonathanLEI]

Wouldn't that have a big overhead? Never done that

Nope it's just like linking to any other library. Rust does not have a runtime. Might be helpful:

• https://parallel-rust-cpp.github.io/cpp_abi.html
• https://stackoverflow.com/questions/69418715/calling-rust-from-c-using-cxx-bridge

[rbdm-qnt]

Wouldn't that have a big overhead? Never done that

Nope it's just like linking to any other library. Rust does not have a runtime. Might be helpful:

* https://parallel-rust-cpp.github.io/cpp_abi.html

* https://stackoverflow.com/questions/69418715/calling-rust-from-c-using-cxx-bridge

Thanks, I'll try it! Would you be interested in providing a C++ bind in the lib? Also any more documentation on how to install/operate the lib would be greatly appreciated (especially for a Rust noob :))

[xJonathanLEI]

I would love to have such instructions implemented as an example (specifically with cxx). Created an issue to track it: xJonathanLEI/starknet-rs#325

However I'm currently too busy to put it together. Would be awesome if someone can help. Or if you make it work, feel free to drop a PR for that. Thanks!

[rbdm-qnt]

I would love to have such instructions implemented as an example (specifically with cxx). Created an issue to track it: xJonathanLEI/starknet-rs#325

However I'm currently too busy to put it together. Would be awesome if someone can help. Or if you make it work, feel free to drop a PR for that. Thanks!

Could you please at least provide an example of how to use the Rust code itself? I'm trying to understand how to create some C bindings, but can't figure out these Rust types like FieldElement and Fp256Parameters.