forks/go-ethereum
1
0
Fork 1
mirror of https://github.com/ethereum/go-ethereum.git synced 2026-07-27 23:26:44 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

core/vm: Fixed error in bn256Add

Browse source
This commit is contained in:
Martin Holst Swende 2017-06-20 23:03:02 +02:00 committed by Péter Szilágyi
parent c3711a1f2c
commit c5b2abc83d
No known key found for this signature in database
GPG key ID: E9AE538CEDF8293D
1 changed files with 4 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
core/vm/contracts.go
View file

@ -231,11 +231,11 @@ func (c *bn256Add) Run(in []byte) ([]byte, error) {
return nil, errInvalidCurvePoint return nil, errInvalidCurvePoint
} }
y, onCurve := new(bn256.G1).Unmarshal(in[:64]) y, onCurve := new(bn256.G1).Unmarshal(in[64:128])
if !onCurve { if !onCurve {
return nil, errNotOnCurve return nil, errNotOnCurve
} }
gx, gy, _, _ = x.CurvePoints() gx, gy, _, _ = y.CurvePoints()
if gx.Cmp(bn256.P) >= 0 || gy.Cmp(bn256.P) >= 0 { if gx.Cmp(bn256.P) >= 0 || gy.Cmp(bn256.P) >= 0 {
return nil, errInvalidCurvePoint return nil, errInvalidCurvePoint
} }
@ -278,7 +278,8 @@ type pairing struct{}
// This method does not require any overflow checking as the input size gas costs // This method does not require any overflow checking as the input size gas costs
// required for anything significant is so high it's impossible to pay for. // required for anything significant is so high it's impossible to pay for.
func (c *pairing) RequiredGas(input []byte) uint64 { func (c *pairing) RequiredGas(input []byte) uint64 {
return 0 // TODO //return 0 // TODO
return uint64(60000*len(input) + 40000)
} }
const pairSize = 192 const pairSize = 192