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@ -20,6 +20,7 @@ import org.hyperledger.besu.crypto.altbn128.AltBn128Point; |
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import org.hyperledger.besu.crypto.altbn128.Fq; |
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import org.hyperledger.besu.crypto.altbn128.Fq12; |
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import org.hyperledger.besu.crypto.altbn128.Fq2; |
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import org.hyperledger.besu.evm.frame.ExceptionalHaltReason; |
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import org.hyperledger.besu.evm.frame.MessageFrame; |
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import org.hyperledger.besu.evm.gascalculator.GasCalculator; |
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import org.hyperledger.besu.nativelib.bls12_381.LibEthPairings; |
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@ -28,6 +29,7 @@ import java.math.BigInteger; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.List; |
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import java.util.Optional; |
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import javax.annotation.Nonnull; |
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import org.apache.tuweni.bytes.Bytes; |
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@ -70,13 +72,16 @@ public class AltBN128PairingPrecompiledContract extends AbstractAltBnPrecompiled |
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return (pairingGasCost * parameters) + baseGasCost; |
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} |
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@Nonnull |
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@Override |
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public Bytes compute(final Bytes input, @Nonnull final MessageFrame messageFrame) { |
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public PrecompileContractResult computePrecompile( |
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final Bytes input, @Nonnull final MessageFrame messageFrame) { |
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if (input.isEmpty()) { |
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return TRUE; |
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return PrecompileContractResult.success(TRUE); |
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} |
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if (input.size() % PARAMETER_LENGTH != 0) { |
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return null; |
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return PrecompileContractResult.halt( |
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null, Optional.of(ExceptionalHaltReason.PRECOMPILE_ERROR)); |
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} |
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if (useNative) { |
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return computeNative(input, messageFrame); |
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@ -85,7 +90,8 @@ public class AltBN128PairingPrecompiledContract extends AbstractAltBnPrecompiled |
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} |
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} |
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private static Bytes computeDefault(final Bytes input) { |
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@Nonnull |
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private static PrecompileContractResult computeDefault(final Bytes input) { |
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final int parameters = input.size() / PARAMETER_LENGTH; |
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final List<AltBn128Point> a = new ArrayList<>(); |
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final List<AltBn128Fq2Point> b = new ArrayList<>(); |
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@ -94,7 +100,8 @@ public class AltBN128PairingPrecompiledContract extends AbstractAltBnPrecompiled |
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final BigInteger p1_y = extractParameter(input, i * PARAMETER_LENGTH + 32, FIELD_LENGTH); |
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final AltBn128Point p1 = new AltBn128Point(Fq.create(p1_x), Fq.create(p1_y)); |
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if (!p1.isOnCurve()) { |
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return null; |
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return PrecompileContractResult.halt( |
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null, Optional.of(ExceptionalHaltReason.PRECOMPILE_ERROR)); |
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} |
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a.add(p1); |
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@ -106,7 +113,8 @@ public class AltBN128PairingPrecompiledContract extends AbstractAltBnPrecompiled |
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final Fq2 p2_y = Fq2.create(p2_yReal, p2_yImag); |
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final AltBn128Fq2Point p2 = new AltBn128Fq2Point(p2_x, p2_y); |
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if (!p2.isOnCurve() || !p2.isInGroup()) { |
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return null; |
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return PrecompileContractResult.halt( |
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null, Optional.of(ExceptionalHaltReason.PRECOMPILE_ERROR)); |
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} |
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b.add(p2); |
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} |
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@ -117,9 +125,9 @@ public class AltBN128PairingPrecompiledContract extends AbstractAltBnPrecompiled |
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} |
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if (AltBn128Fq12Pairer.finalize(exponent).equals(Fq12.one())) { |
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return TRUE; |
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return PrecompileContractResult.success(TRUE); |
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} else { |
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return FALSE; |
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return PrecompileContractResult.success(FALSE); |
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} |
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} |
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