KZG point eval precompile (#4860)

* KZG implementation

Signed-off-by: Justin Florentine <justin+github@florentine.us>

CHANGELOG.md

@@ -10,6 +10,7 @@
 ### Additions and Improvements
 - Added option to evm CLI tool to allow code execution at specific forks [#4913](https://github.com/hyperledger/besu/pull/4913)
 - Improve get account performance by using the world state updater cache [#4897](https://github.com/hyperledger/besu/pull/4897)
+- Add new KZG precompile and option to override the trusted setup being used [#4822](https://github.com/hyperledger/besu/issues/4822)
 - Add implementation for eth_createAccessList RPC method [#4942](https://github.com/hyperledger/besu/pull/4942)
 
 ### Bug Fixes

build.gradle

@@ -109,7 +109,7 @@ allprojects {
     }
     maven {
       url 'https://artifacts.consensys.net/public/maven/maven/'
-      content { includeGroupByRegex('tech\\.pegasys\\..*') }
+      content { includeGroupByRegex('tech\\.pegasys(\\..*)?') }
     }
     maven {
       url 'https://dl.cloudsmith.io/public/consensys/quorum-mainnet-launcher/maven/'

datatypes/src/main/java/org/hyperledger/besu/datatypes/Address.java

@@ -71,7 +71,8 @@ public class Address extends DelegatingBytes implements org.hyperledger.besu.plu
   /** The constant BLS12_MAP_FP2_TO_G2. */
   public static final Address BLS12_MAP_FP2_TO_G2 = Address.precompiled(0x12);
 
-  /** The constant ZERO. */
+  public static final Address KZG_POINT_EVAL = Address.precompiled(0x14);
+
   public static final Address ZERO = Address.fromHexString("0x0");
 
   /**

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/MainnetPrecompiledContractRegistries.java

@@ -19,6 +19,7 @@ import static org.hyperledger.besu.ethereum.core.PrivacyParameters.FLEXIBLE_PRIV
 import static org.hyperledger.besu.ethereum.core.PrivacyParameters.PLUGIN_PRIVACY;
 import static org.hyperledger.besu.evm.precompile.MainnetPrecompiledContracts.populateForBLS12;
 import static org.hyperledger.besu.evm.precompile.MainnetPrecompiledContracts.populateForByzantium;
+import static org.hyperledger.besu.evm.precompile.MainnetPrecompiledContracts.populateForCancun;
 import static org.hyperledger.besu.evm.precompile.MainnetPrecompiledContracts.populateForFrontier;
 import static org.hyperledger.besu.evm.precompile.MainnetPrecompiledContracts.populateForIstanbul;
 
@@ -60,6 +61,13 @@ public abstract class MainnetPrecompiledContractRegistries {
     return registry;
   }
 
+  public static PrecompileContractRegistry cancun(
+      final PrecompiledContractConfiguration precompiledContractConfiguration) {
+    final PrecompileContractRegistry registry = new PrecompileContractRegistry();
+    populateForCancun(registry, precompiledContractConfiguration.getGasCalculator());
+    return registry;
+  }
+
   static void appendPrivacy(
       final PrecompileContractRegistry registry,
       final PrecompiledContractConfiguration precompiledContractConfiguration) {

ethereum/core/src/main/java/org/hyperledger/besu/ethereum/mainnet/MainnetProtocolSpecs.java

@@ -744,6 +744,7 @@ public abstract class MainnetProtocolSpecs {
                         MaxCodeSizeRule.of(contractSizeLimit), EOFValidationCodeRule.of(1, false)),
                     1,
                     SPURIOUS_DRAGON_FORCE_DELETE_WHEN_EMPTY_ADDRESSES))
+        .precompileContractRegistryBuilder(MainnetPrecompiledContractRegistries::cancun)
         .name("Cancun");
   }
 

evm/build.gradle

@@ -45,7 +45,8 @@ dependencies {
   implementation 'org.hyperledger.besu:bls12-381'
   implementation 'net.java.dev.jna:jna'
   implementation 'com.github.ben-manes.caffeine:caffeine'
-
+  implementation 'tech.pegasys:jc-kzg-4844'
+  testImplementation 'com.fasterxml.jackson.core:jackson-databind'
   testImplementation 'info.picocli:picocli'
   testImplementation 'junit:junit'
   testImplementation 'org.assertj:assertj-core'

evm/src/main/java/org/hyperledger/besu/evm/precompile/KZGPointEvalPrecompiledContract.java

@@ -0,0 +1,160 @@
+/*
+ * Copyright Hyperledger Besu Contributors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+package org.hyperledger.besu.evm.precompile;
+
+import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
+
+import org.hyperledger.besu.evm.frame.ExceptionalHaltReason;
+import org.hyperledger.besu.evm.frame.MessageFrame;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.Charset;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Optional;
+
+import com.google.common.annotations.VisibleForTesting;
+import ethereum.ckzg4844.CKZG4844JNI;
+import org.apache.tuweni.bytes.Bytes;
+import org.apache.tuweni.bytes.Bytes32;
+import org.jetbrains.annotations.NotNull;
+
+public class KZGPointEvalPrecompiledContract implements PrecompiledContract {
+
+  public KZGPointEvalPrecompiledContract() {
+    this(Optional.empty());
+  }
+
+  public KZGPointEvalPrecompiledContract(final Optional<Path> pathToTrustedSetup) {
+
+    String absolutePathToSetup;
+    CKZG4844JNI.Preset bitLength;
+    if (pathToTrustedSetup.isPresent()) {
+      Path pathToSetup = pathToTrustedSetup.get();
+      absolutePathToSetup = pathToSetup.toAbsolutePath().toString();
+    } else {
+      InputStream is =
+          KZGPointEvalPrecompiledContract.class.getResourceAsStream(
+              "mainnet_kzg_trusted_setup_4096.txt");
+      try {
+        File jniWillLoadFrom = File.createTempFile("kzgTrustedSetup", "txt");
+        jniWillLoadFrom.deleteOnExit();
+        Files.copy(is, jniWillLoadFrom.toPath(), REPLACE_EXISTING);
+        is.close();
+        absolutePathToSetup = jniWillLoadFrom.getAbsolutePath();
+      } catch (IOException e) {
+        throw new RuntimeException(e);
+      }
+    }
+    try (BufferedReader setupFile =
+        Files.newBufferedReader(Paths.get(absolutePathToSetup), Charset.defaultCharset())) {
+      String firstLine = setupFile.readLine();
+      if ("4".equals(firstLine)) {
+        bitLength = CKZG4844JNI.Preset.MINIMAL;
+      } else if ("4096".equals(firstLine)) {
+        bitLength = CKZG4844JNI.Preset.MAINNET;
+      } else {
+        throw new IllegalArgumentException("provided file not a setup for either 4 or 4096 bits");
+      }
+      CKZG4844JNI.loadNativeLibrary(bitLength);
+      try {
+        CKZG4844JNI.loadTrustedSetup(absolutePathToSetup);
+      } catch (RuntimeException mightBeAlreadyLoaded) {
+        if (!mightBeAlreadyLoaded.getMessage().contains("Trusted Setup is already loaded")) {
+          throw mightBeAlreadyLoaded;
+        }
+      }
+    } catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  @VisibleForTesting
+  public void tearDown() {
+    CKZG4844JNI.freeTrustedSetup();
+  }
+
+  @Override
+  public String getName() {
+    return "KZGPointEval";
+  }
+
+  @Override
+  public long gasRequirement(final Bytes input) {
+    // As defined in EIP-4844
+    return 50000;
+  }
+
+  @NotNull
+  @Override
+  public PrecompileContractResult computePrecompile(
+      final Bytes input, @NotNull final MessageFrame messageFrame) {
+
+    if (input.size() != 192) {
+      return new PrecompileContractResult(
+          Bytes.EMPTY,
+          false,
+          MessageFrame.State.COMPLETED_FAILED,
+          Optional.of(ExceptionalHaltReason.PRECOMPILE_ERROR));
+    }
+    Bytes z = input.slice(32, 32);
+    Bytes y = input.slice(64, 32);
+    Bytes commitment = input.slice(96, 48);
+    Bytes proof = input.slice(144, 48);
+
+    Bytes output = Bytes.EMPTY;
+    PrecompileContractResult result;
+    try {
+      boolean proved =
+          CKZG4844JNI.verifyKzgProof(
+              commitment.toArray(), z.toArray(), y.toArray(), proof.toArray());
+
+      if (proved) {
+        Bytes fieldElementsPerBlob =
+            Bytes32.wrap(
+                Bytes.of(CKZG4844JNI.getFieldElementsPerBlob()).xor(Bytes32.ZERO)); // usually 4096
+        Bytes blsModulus =
+            Bytes32.wrap(Bytes.of(CKZG4844JNI.BLS_MODULUS.toByteArray()).xor(Bytes32.ZERO));
+
+        output = Bytes.concatenate(fieldElementsPerBlob, blsModulus);
+
+        result =
+            new PrecompileContractResult(
+                output, false, MessageFrame.State.COMPLETED_SUCCESS, Optional.empty());
+      } else {
+        result =
+            new PrecompileContractResult(
+                output,
+                false,
+                MessageFrame.State.COMPLETED_FAILED,
+                Optional.of(ExceptionalHaltReason.PRECOMPILE_ERROR));
+      }
+      return result;
+    } catch (RuntimeException kzgFailed) {
+      System.out.println(kzgFailed.getMessage());
+      result =
+          new PrecompileContractResult(
+              output,
+              false,
+              MessageFrame.State.COMPLETED_FAILED,
+              Optional.of(ExceptionalHaltReason.PRECOMPILE_ERROR));
+    }
+    return result;
+  }
+}

evm/src/main/java/org/hyperledger/besu/evm/precompile/MainnetPrecompiledContracts.java

@@ -1,5 +1,5 @@
 /*
- * Copyright ConsenSys AG.
+ * Copyright Hyperledger Besu Contributors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
  * the License. You may obtain a copy of the License at
@@ -134,4 +134,11 @@ public abstract class MainnetPrecompiledContracts {
     registry.put(Address.BLS12_MAP_FP_TO_G1, new BLS12MapFpToG1PrecompiledContract());
     registry.put(Address.BLS12_MAP_FP2_TO_G2, new BLS12MapFp2ToG2PrecompiledContract());
   }
+
+  public static void populateForCancun(
+      final PrecompileContractRegistry registry, final GasCalculator gasCalculator) {
+    populateForIstanbul(registry, gasCalculator);
+    // TODO: allow override to be configured?
+    registry.put(Address.KZG_POINT_EVAL, new KZGPointEvalPrecompiledContract());
+  }
 }

evm/src/test/java/org/hyperledger/besu/evm/precompile/KZGPointEvalPrecompileContractTest.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright Hyperledger Besu Contributors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+package org.hyperledger.besu.evm.precompile;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.fail;
+import static org.mockito.Mockito.mock;
+
+import org.hyperledger.besu.evm.frame.ExceptionalHaltReason;
+import org.hyperledger.besu.evm.frame.MessageFrame;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.file.Path;
+import java.util.Optional;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import ethereum.ckzg4844.CKZG4844JNI;
+import org.apache.tuweni.bytes.Bytes;
+import org.apache.tuweni.bytes.Bytes32;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class KZGPointEvalPrecompileContractTest {
+
+  private static KZGPointEvalPrecompiledContract contract;
+  private final MessageFrame toRun = mock(MessageFrame.class);
+
+  @BeforeClass
+  public static void init() {
+    Path testSetupAbsolutePath =
+        Path.of(
+            KZGPointEvalPrecompileContractTest.class.getResource("trusted_setup_4.txt").getPath());
+    contract = new KZGPointEvalPrecompiledContract(Optional.of(testSetupAbsolutePath));
+  }
+
+  @Test
+  public void happyPath() {
+    Bytes input =
+        Bytes.fromHexString(
+            "013c03613f6fc558fb7e61e75602241ed9a2f04e36d8670aadd286e71b5ca9cc420000000000000000000000000000000000000000000000000000000000000031e5a2356cbc2ef6a733eae8d54bf48719ae3d990017ca787c419c7d369f8e3c83fac17c3f237fc51f90e2c660eb202a438bc2025baded5cd193c1a018c5885bc9281ba704d5566082e851235c7be763b2a99adff965e0a121ee972ebc472d02944a74f5c6243e14052e105124b70bf65faf85ad3a494325e269fad097842cba");
+
+    Bytes fieldElementsPerBlob =
+        Bytes32.wrap(Bytes.ofUnsignedInt(CKZG4844JNI.getFieldElementsPerBlob()).xor(Bytes32.ZERO));
+    Bytes blsModulus =
+        Bytes32.wrap(Bytes.of(CKZG4844JNI.BLS_MODULUS.toByteArray()).xor(Bytes32.ZERO));
+    Bytes expectedOutput = Bytes.concatenate(fieldElementsPerBlob, blsModulus);
+    // contract input is encoded as follows: versioned_hash | z | y | commitment | proof |
+    PrecompiledContract.PrecompileContractResult result = contract.computePrecompile(input, toRun);
+    assertThat(result.getOutput()).isEqualTo(expectedOutput);
+    MessageFrame.State endState = result.getState();
+    assertThat(endState).isEqualTo(MessageFrame.State.COMPLETED_SUCCESS);
+  }
+
+  @Test
+  public void sadPaths() {
+    try (InputStream failVectors =
+        KZGPointEvalPrecompileContractTest.class.getResourceAsStream("fail_pointEvaluation.json")) {
+
+      ObjectMapper jsonMapper = new ObjectMapper();
+      JsonNode failJson = jsonMapper.readTree(failVectors);
+
+      for (JsonNode testCase : failJson) {
+
+        Bytes input = Bytes.fromHexString(testCase.get("Input").asText());
+
+        PrecompiledContract.PrecompileContractResult result =
+            contract.computePrecompile(input, toRun);
+        MessageFrame.State endState = result.getState();
+        assertThat(endState).isEqualTo(MessageFrame.State.COMPLETED_FAILED);
+        assertThat(result.getHaltReason()).isPresent();
+        assertThat(result.getHaltReason().get()).isEqualTo(ExceptionalHaltReason.PRECOMPILE_ERROR);
+      }
+    } catch (IOException ioe) {
+      fail("couldn't load test vectors", ioe);
+    }
+  }
+}

evm/src/test/resources/org/hyperledger/besu/evm/precompile/trusted_setup_4.txt

@@ -0,0 +1,71 @@
+4
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gradle/verification-metadata.xml

@@ -5341,6 +5341,17 @@
             <sha256 value="8e93f379f1bd40d793367636ca501ce969c7ee08e5595a6e0249973041388b9b" origin="Generated by Gradle"/>
          </artifact>
       </component>
+      <component group="tech.pegasys" name="jc-kzg-4844" version="0.1.0">
+         <artifact name="jc-kzg-4844-0.1.0.jar">
+            <sha256 value="b54a566c122429711266d9e4e183b5dc48f20c21e5ea0c0fde7b6b3220669338" origin="Generated by Gradle"/>
+         </artifact>
+         <artifact name="jc-kzg-4844-0.1.0.module">
+            <sha256 value="cf964610c0776cd4e4a08d984b91b955b3077be7efcea15ff58dabce4d6857d4" origin="Generated by Gradle"/>
+         </artifact>
+         <artifact name="jc-kzg-4844-0.1.0.pom">
+            <sha256 value="8314ff61776036dacab235bf0a225d4ef901e1555a86f91977e162780d3bbe54" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="tech.pegasys.discovery" name="discovery" version="22.2.0">
          <artifact name="discovery-22.2.0.jar">
             <sha256 value="0da2a8b2928aef595e9a637fa3d6595cecf744a2c63e05b815130ed658f80005" origin="Generated by Gradle"/>

gradle/versions.gradle

@@ -152,7 +152,7 @@ dependencyManagement {
     }
 
     dependency 'org.fusesource.jansi:jansi:2.4.0'
-
+    dependency 'tech.pegasys:jc-kzg-4844:0.1.0'
     dependencySet(group: 'org.hyperledger.besu', version: '0.7.1') {
       entry 'arithmetic'
       entry 'ipa-multipoint'