ed448-goldilocks: initial import

[baloo]

Imports source code from: https://github.com/crate-crypto/Ed448-Goldilocks

Another take on #1208 that doesn't pull the macros from primeorder.

[baloo]

cc @daxpedda

I would have expected to use U84, but I'm not sure I understand why that doesn't work.

[daxpedda]

The generic here should be the variable k, which for Curve/Ed448 is 224 bits. So this should be U28.

[baloo]

hence the CollisionResistance relationship

[tarcieri]

@baloo can you also rename the containing directory and CI workflow to ed448-goldilocks?

(FWIW, it's the original published name of this curve: https://eprint.iacr.org/2015/625.pdf)

Also looks like you need a rustfmt

[tarcieri]

@kevaundray can you add me as an owner of the ed448-goldilocks crate?

[baloo]

(and likely https://crates.io/crates/ed448 to push https://github.com/RustCrypto/signatures/tree/master/ed448)

[tarcieri]

@baloo yeah, already asked here: RustCrypto/signatures#990 (comment)

[dignifiedquire]

what would be the best place to PR in x448?

[kevaundray]

@kevaundray can you add me as an owner of the ed448-goldilocks crate?

I just added your username, can you confirm you received it?

[tarcieri]

@kevaundray got them both, thanks!

Not sure about x448. We can either put it under elliptic-curves or possibly KEMs, though it isn't really a KEM.

@kevaundray can you add me as an owner of x448 too?

[kevaundray]

@kevaundray got them both, thanks!

Not sure about x448. We can either put it under elliptic-curves or possibly KEMs, though it isn't really a KEM.

@kevaundray can you add me as an owner of x448 too?

added you to that too :)