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In this commit, we add an initial implementation of BIP-340. Mirroring the recently added `ecsda` package, we create a new `schnorr` package with a unique `Signature` type and `ParsePubkey` function. The new `Signature` type implements the fixed-sized 64-byte signatures, and the `ParsePubkey` method only accepts pubkeys that are 32-bytes in length, with an implicit sign byte. The signing implementation by default, deviates from BIP-340 as it opts to use rfc6979 deterministic signatures by default, which means callers don't need to always pass in their own `auxNonce` randomness. A set of functional arguments allows callers to pass in their own value, which is the way all the included test vectors function. The other optional functional argument added is the `FastSign` option that allows callers to skip the final step of verifying each signature they generate. |
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| .. | ||
| error.go | ||
| pubkey.go | ||
| signature.go | ||
| signature_test.go | ||