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Co-authored-by: Daira Hopwood <daira@jacaranda.org>
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Conrado Gouvea 2023-01-16 19:03:20 -03:00 committed by GitHub
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@ -217,9 +217,9 @@ along with the message and the set of signing commitments. (Note that this diffe
from regular FROST which just requires an authenticated channel.)
In Zcash, the message that needs to be signed is actually the SIGHASH
transaction hash, which is does not convey enough information for the signers to
transaction hash, which does not convey enough information for the signers to
decide if they want to authorize the transaction or not. Therefore, in practice,
more data is needed to be sent from the Coordinator to the signers, possibly the
more data is needed to be sent (over the same encrypted, authenticated channel) from the Coordinator to the signers, possibly the
transaction itself, openings of value commitments, decryption of note
ciphertexts, etc.; and the signers must check that the given SIGHASH matches the
data sent from the Coordinator, or compute the SIGHASH themselves from that