helium / helium/ecc_compact

secp256r1 public key recovery

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Description

Hi there, I'm confused about how this library works. It looks like accurate recovery is implemented for secp256k1 via `recover_compressed_key` which includes the odd/even byte, but secp256r1 can't be accurately recovered because the function only takes the raw X coordinate via `recover_compact_key` without the odd/even byte and therefore can't know which Y coordinate is the public key. Is there a specific reason that this library has that limitation?

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