C bindings? about curve25519-dalek HOT 6 CLOSED

Unfortunately we have no plans to add C bindings to curve25519-dalek, because we use a lot of Rust features to provide a safe API. For instance, because Rust has definite initialization, we can ensure that all points are valid curve points at all times -- so unlike libsodium, we don't have a function to check whether a point is valid, because it's not possible in safe Rust to create an invalid RistrettoPoint.

Rather than provide C bindings to the mid-level API in curve25519-dalek, our suggestion is that protocols/primitives should be implemented in Rust using curve25519-dalek as a dependency, and those crates can provide minimal, buffer-oriented C APIs that are specific to the protocol/primitive.

from curve25519-dalek.

This might be helpful: https://github.com/eqrion/cbindgen

from curve25519-dalek.

Ok, will try but it's good when authors consider official bindings

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Ok, so the idea is to (for example) implement protocol and export only those couple of methods that deal with bytes. Got you, thanks

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Yeah, we should probably add this to the docs somewhere -- I'm going to reopen this issue, and close it when the docs are updated to note this

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Closing this now that #183 is merged.

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