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Merge pull request #63 from jonasnick/fix-sign-key

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Fix privkey negation in taproot_sign_key
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Pieter Wuille 2019-08-29 17:47:24 -07:00 • committed by GitHub
commit 51a84fd407
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1 changed files with 3 additions and 3 deletions
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bip-taproot.mediawiki
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@ -200,10 +200,10 @@ See the code below:
<source lang="python"> <source lang="python">
def taproot_sign_key(script_tree, internal_privkey, hash_type): def taproot_sign_key(script_tree, internal_privkey, hash_type):
internal_pubkey, is_y_qresidue = internal_privkey.pubkey_gen()
if is_y_qresidue:
internal_privkey = internal_privkey.negate()
_, h = taproot_tree_helper(script_tree) _, h = taproot_tree_helper(script_tree)
internal_pubkey, is_y_qresidue = internal_privkey.pubkey_gen()
if not is_y_qresidue:
internal_privkey = internal_privkey.negate()
t = tagged_hash("TapTweak", internal_pubkey.get_bytes() + h) t = tagged_hash("TapTweak", internal_pubkey.get_bytes() + h)
output_privkey = internal_privkey.tweak_add(t) output_privkey = internal_privkey.tweak_add(t)
sig = output_privkey.schnorr_sign(sighash(hash_type)) sig = output_privkey.schnorr_sign(sighash(hash_type))