Add miniscript implementation #1987
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Currently, only the P2WSH context is supported. Miniscript for Taproot was not yet well specified at the time of writing. Currently, there is an open PR for Bitcoin Core at bitcoin/bitcoin#27255 which, when merged, can be taken as a reference. This implementation contains: - miniscript parser - type checker - malleability check - script length limit check (P2WSH standardness rule) - op count check (P2WSH consensus rule) - duplicate pubkey check - script generation - witness generation (satisfactions) - unit tests that create receive addresses based on some miniscripts and spend from them again (see `TestRedeem()`). Unit tests exist to check that this implementation's type checking passes some of the unit tests of rust-miniscript. See [./testdata](./testdata). Missing/todo: - timelock mixing check - stack size check (P2WSH standardness rule) - witness generation for thresh/multi currently has a naive implementation that is very inefficient (exponential runtime). This should be replaced with a fast algorithm. - maybe more Co-authored-by: Oliver Gugger <[email protected]>
This commit adds test vectors taken from https://github.com/rust-bitcoin/rust-miniscript/blob/a0648b3a4d63abbe53f621308614f97f04a04096/src/miniscript/ms_tests.rs to the miniscript implementation. Co-authored-by: Oliver Gugger <[email protected]>
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Adds the Golang miniscript implementation authored by @benma in https://github.com/benma/miniscript-go to
txscript/miniscript(as requested by the author, see #1986).TODOs: