logos-storage/gnark-plonky2-verifier
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fix for V-SCT-VUL-033

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This commit is contained in:
Kevin Jue 2023-12-19 13:31:36 -08:00
parent 9e6d08b99c
commit 8567f335cb
1 changed files with 5 additions and 7 deletions
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12
plonk/gates/random_access_gate.go
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@ -165,14 +165,12 @@ func (g *RandomAccessGate) EvalUnfiltered(
y := listItems[i+1]
// This is computing `if b { x } else { y }`
// i.e. `by - (bx - x)`.
mul1 := glApi.MulExtension(b, x)
sub1 := glApi.SubExtension(mul1, x)
// i.e. `x + b(y - x)`.
diff := glApi.SubExtension(y, x)
mul := glApi.MulExtension(b, diff)
add := glApi.AddExtension(x, mul)
mul2 := glApi.MulExtension(b, y)
sub2 := glApi.SubExtension(mul2, sub1)
listItemsTmp = append(listItemsTmp, sub2)
listItemsTmp = append(listItemsTmp, add)
}
listItems = listItemsTmp
}