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12cfa6b2a5
Fixes `no-std` builds for packages which intended to be `no-std` (without `alloc`). Updates a variety of MSRVs to 1.73 due to `flexible-transcript` no longer using `std-shims` to achieve 1.66 (as `std-shims` requires `alloc`). A future improvement would be for `std-shims` to have an `alloc` feature and only provide MSRV shims without it.
embedwards25519
A curve defined over the Ed25519 scalar field.
This curve was found via tevador's script for finding curves (specifically, curve cycles), modified to search for curves whose field is the Ed25519 scalar field (not the Ed25519 field).
p = 0x1000000000000000000000000000000014def9dea2f79cd65812631a5cf5d3ed
q = 0x0fffffffffffffffffffffffffffffffe53f4debb78ff96877063f0306eef96b
D = -420435
y^2 = x^3 - 3*x + 4188043517836764736459661287169077812555441231147410753119540549773825148767
The embedding degree is (q-1)/2.
This curve should not be used with single-coordinate ladders, and points should always be represented in a compressed form (preventing receiving off-curve points).