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SignatureHash: fix rangeproof hash for SIGHASH_RANGEPROOF

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The logic for computing the uncached version of the sighash changed during
the 0.21 rebase, such that it no longer matched the cached version. As the
changed hash is used during signing (not verification!), this was not a
forking change (and our existing functional test would have caught such a
forking change since it uses Python to independently compute the hash).
But it still broke signing.

Test in next commit.
This commit is contained in:
Andrew Poelstra 2021-09-19 13:47:20 +00:00
parent f7f9555792
commit ab5b376b72
1 changed files with 1 additions and 1 deletions
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2
src/script/interpreter.cpp
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@ -2755,7 +2755,7 @@ uint256 SignatureHash(const CScript& scriptCode, const T& txTo, unsigned int nIn
hashOutputs = cacheready ? cache->hashOutputs : SHA256Uint256(GetOutputsSHA256(txTo));
if (fRangeproof) {
hashRangeproofs = cacheready ? cache->hashRangeproofs : SHA256Uint256(GetRangeproofsHash(txTo));
hashRangeproofs = cacheready ? cache->hashRangeproofs : GetRangeproofsHash(txTo);
}
} else if ((nHashType & 0x1f) == SIGHASH_SINGLE && nIn < txTo.vout.size()) {
CHashWriter ss(SER_GETHASH, 0);