diff options
| -rw-r--r-- | test/functional/test_framework/script.py | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/test/functional/test_framework/script.py b/test/functional/test_framework/script.py index 8e5848d493..26ccab3039 100644 --- a/test/functional/test_framework/script.py +++ b/test/functional/test_framework/script.py @@ -824,21 +824,33 @@ def taproot_tree_helper(scripts): h = TaggedHash("TapBranch", left_h + right_h) return (left + right, h) +# A TaprootInfo object has the following fields: +# - scriptPubKey: the scriptPubKey (witness v1 CScript) +# - inner_pubkey: the inner pubkey (32 bytes) +# - negflag: whether the pubkey in the scriptPubKey was negated from inner_pubkey+tweak*G (bool). +# - tweak: the tweak (32 bytes) +# - leaves: a dict of name -> TaprootLeafInfo objects for all known leaves TaprootInfo = namedtuple("TaprootInfo", "scriptPubKey,inner_pubkey,negflag,tweak,leaves") + +# A TaprootLeafInfo object has the following fields: +# - script: the leaf script (CScript or bytes) +# - version: the leaf version (0xc0 for BIP342 tapscript) +# - merklebranch: the merkle branch to use for this leaf (32*N bytes) TaprootLeafInfo = namedtuple("TaprootLeafInfo", "script,version,merklebranch") def taproot_construct(pubkey, scripts=None): """Construct a tree of Taproot spending conditions - pubkey: an ECPubKey object for the internal pubkey + pubkey: a 32-byte xonly pubkey for the internal pubkey (bytes) scripts: a list of items; each item is either: - - a (name, CScript) tuple - - a (name, CScript, leaf version) tuple + - a (name, CScript or bytes, leaf version) tuple + - a (name, CScript or bytes) tuple (defaulting to leaf version 0xc0) - another list of items (with the same structure) - - a function, which specifies how to compute the hashing partner - in function of the hash of whatever it is combined with + - a list of two items; the first of which is an item itself, and the + second is a function. The function takes as input the Merkle root of the + first item, and produces a (fictitious) partner to hash with. - Returns: script (sPK or redeemScript), tweak, {name:(script, leaf version, negation flag, innerkey, merklepath), ...} + Returns: a TaprootInfo object """ if scripts is None: scripts = [] |