elliptic-curve: add weierstrass::point::Decompress trait#266
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Adds a trait for decompressing Weierstrass points from a big endian encoded affine x-coordinate and a flag indicating whether or not the y-coordinate is odd.
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As discussed in #264, adds a trait for decompressing Weierstrass curve points intended to encapsulate what's presently tied to the SEC1 formats at a higher level: https://github.com/RustCrypto/elliptic-curves/blob/68a83c8/k256/src/arithmetic.rs#L109-L128 This will also be useful for eliminating duplication in point decompression scenarios that aren't necessarily tied to the SEC1 formats, e.g.: |
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Adds a trait for decompressing Weierstrass points from a big endian encoded affine x-coordinate and a flag indicating whether or not the y-coordinate is odd.