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| author | Johnson Lau <jl2012@xbt.hk> | 2020-09-11 14:34:02 -0700 |
|---|---|---|
| committer | Pieter Wuille <pieter@wuille.net> | 2020-10-12 17:18:24 -0700 |
| commit | 72422ce396b8eba7b1a72c171c2f07dae691d1b5 (patch) | |
| tree | d2aa2a75ed54579ed6ddac8f858cf3ca67605b48 /src/script/script.h | |
| parent | 330de894a9a48515d9a473448b6c67adc3d188be (diff) | |
| download | bitcoin-72422ce396b8eba7b1a72c171c2f07dae691d1b5.tar.xz | |
Implement Tapscript script validation rules (BIP 342)
This adds a new `SigVersion::TAPSCRIPT`, makes the necessary interpreter
changes to make it implement BIP342, and uses them for leaf version 0xc0
in Taproot script path spends.
Diffstat (limited to 'src/script/script.h')
| -rw-r--r-- | src/script/script.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/script/script.h b/src/script/script.h index fcf3e29362..974cde4984 100644 --- a/src/script/script.h +++ b/src/script/script.h @@ -49,6 +49,12 @@ static const uint32_t LOCKTIME_MAX = 0xFFFFFFFFU; // has meanings independent of the script static constexpr unsigned int ANNEX_TAG = 0x50; +// Validation weight per passing signature (Tapscript only, see BIP 342). +static constexpr uint64_t VALIDATION_WEIGHT_PER_SIGOP_PASSED = 50; + +// How much weight budget is added to the witness size (Tapscript only, see BIP 342). +static constexpr uint64_t VALIDATION_WEIGHT_OFFSET = 50; + template <typename T> std::vector<unsigned char> ToByteVector(const T& in) { @@ -192,6 +198,9 @@ enum opcodetype OP_NOP9 = 0xb8, OP_NOP10 = 0xb9, + // Opcode added by BIP 342 (Tapscript) + OP_CHECKSIGADD = 0xba, + OP_INVALIDOPCODE = 0xff, }; @@ -560,4 +569,7 @@ struct CScriptWitness std::string ToString() const; }; +/** Test for OP_SUCCESSx opcodes as defined by BIP342. */ +bool IsOpSuccess(const opcodetype& opcode); + #endif // BITCOIN_SCRIPT_SCRIPT_H |