48416dfe73
Aere Network public source. Everything here can be checked against the live chain (chain id 2800, https://rpc.aere.network). Scope note, stated up front rather than buried: consensus on chain 2800 is classical secp256k1 ECDSA QBFT. The post-quantum work in this repository is at the signature, precompile, account and transport layers. Nothing here makes the consensus post-quantum, and no document in it should be read as claiming so.
63 lines
2.2 KiB
Java
63 lines
2.2 KiB
Java
/*
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* Copyright contributors to the AERE Network.
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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package org.hyperledger.besu.evm.precompile;
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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 jakarta.validation.constraints.NotNull;
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import org.apache.tuweni.bytes.Bytes;
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import org.bouncycastle.pqc.crypto.falcon.FalconParameters;
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/**
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* AERE PQC precompile: Falcon-512 signature verification (NIST round-3 reference encoding).
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*
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* <p>Input: {@code pk(897) || sm(rest)} where pk is the reference public key (header 0x09) and sm is
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* the reference signed-message blob. Output: 32-byte word, {@code ...01} if valid else {@code ...00}.
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*/
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public class Falcon512PrecompiledContract extends AbstractPrecompiledContract {
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static final int PK_LEN = 897;
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private static final int LOGN = 9;
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private static final long GAS = 40_000L;
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/**
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* Instantiates a new Falcon-512 precompiled contract.
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*
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* @param gasCalculator the gas calculator
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*/
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Falcon512PrecompiledContract(final GasCalculator gasCalculator) {
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super("AereFalcon512", gasCalculator);
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}
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@Override
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public long gasRequirement(final Bytes input) {
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return GAS;
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}
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@NotNull
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@Override
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public PrecompileContractResult computePrecompile(
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final Bytes input, @NotNull final MessageFrame messageFrame) {
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boolean valid = false;
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if (input.size() > PK_LEN) {
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final byte[] pk = input.slice(0, PK_LEN).toArrayUnsafe();
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final byte[] sm = input.slice(PK_LEN).toArrayUnsafe();
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valid = AereFalconSupport.verify(FalconParameters.falcon_512, LOGN, pk, sm);
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}
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return PrecompileContractResult.success(AereFalconSupport.resultWord(valid));
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}
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}
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