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path: root/src/script/miniscript.cpp
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2022-04-18miniscript: the 'd:' wrapper must not be 'u'Antoine Poinsot
The value it leaves on the stack depends on the last element on the stack. However, we can't make sure this element is OP_1 (which would give us the 'u' property) without the MINIMALIF rule. MINIMALIF is only policy for P2WSH, therefore giving 'd:' the 'u' property breaks consensus soundness: it makes it possible (by consensus but not policy) for instance to satisfy a thresh() without satisfying at least k of its subs. This bug was found and reported by Andrew Poelstra.
2022-03-17Miniscript: conversion from scriptPieter Wuille
Co-Authored-By: Antoine Poinsot <darosior@protonmail.com> Co-Authored-By: Samuel Dobson <dobsonsa68@gmail.com>
2022-03-17Miniscript: type system, script creation, text notation, testsPieter Wuille
More information about Miniscript can be found at https://bitcoin.sipa.be/miniscript/ (the website source is hosted at https://github.com/sipa/miniscript/). This commit defines all fragments, their composition, parsing from string representation and conversion to Script. Co-Authored-By: Antoine Poinsot <darosior@protonmail.com> Co-Authored-By: Sanket Kanjalkar <sanket1729@gmail.com> Co-Authored-By: Samuel Dobson <dobsonsa68@gmail.com>