tornadocash/tornado-nova
1
0
Fork 0
mirror of https://github.com/tornadocash/tornado-nova synced 2024-02-02 14:53:56 +01:00
Code Issues Packages Projects Releases Wiki Activity

remove input range check

Browse Source
This commit is contained in:
poma 2021-08-25 13:20:48 +03:00 committed by Alexey Pertsev
parent 98b2e238b9
commit 5b9f1567e7
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
circuits/transaction.circom
View File

@ -43,7 +43,6 @@ template Transaction(levels, nIns, nOuts, zeroLeaf) {
component inKeypair[nIns];
component inUtxoHasher[nIns];
component nullifierHasher[nIns];
component inAmountCheck[nIns];
component tree[nIns];
component checkRoot[nIns];
var sumIns = 0;
@ -77,9 +76,9 @@ template Transaction(levels, nIns, nOuts, zeroLeaf) {
checkRoot[tx].in[1] <== tree[tx].root;
checkRoot[tx].enabled <== inAmount[tx];
// Check that amount fits into 248 bits to prevent overflow
inAmountCheck[tx] = Num2Bits(248);
inAmountCheck[tx].in <== inAmount[tx];
// We don't need to range check input amounts, since all inputs are valid UTXOs that
// were already checked as outputs in the previous transaction (or zero amount UTXOs that don't
// need to be checked either).
sumIns += inAmount[tx];
}