ensure latest HF is always with p256 verify

Author: lucca30

core/vm/contracts.go

@@ -119,25 +119,26 @@ var PrecompiledContractsCancun = PrecompiledContracts{
 // PrecompiledContractsPrague contains the set of pre-compiled Ethereum
 // contracts used in the Prague release.
 var PrecompiledContractsPrague = PrecompiledContracts{
-	common.BytesToAddress([]byte{0x01}): &ecrecover{},
-	common.BytesToAddress([]byte{0x02}): &sha256hash{},
-	common.BytesToAddress([]byte{0x03}): &ripemd160hash{},
-	common.BytesToAddress([]byte{0x04}): &dataCopy{},
-	common.BytesToAddress([]byte{0x05}): &bigModExp{eip2565: true},
-	common.BytesToAddress([]byte{0x06}): &bn256AddIstanbul{},
-	common.BytesToAddress([]byte{0x07}): &bn256ScalarMulIstanbul{},
-	common.BytesToAddress([]byte{0x08}): &bn256PairingIstanbul{},
-	common.BytesToAddress([]byte{0x09}): &blake2F{},
-	common.BytesToAddress([]byte{0x0a}): &kzgPointEvaluation{},
-	common.BytesToAddress([]byte{0x0b}): &bls12381G1Add{},
-	common.BytesToAddress([]byte{0x0c}): &bls12381G1Mul{},
-	common.BytesToAddress([]byte{0x0d}): &bls12381G1MultiExp{},
-	common.BytesToAddress([]byte{0x0e}): &bls12381G2Add{},
-	common.BytesToAddress([]byte{0x0f}): &bls12381G2Mul{},
-	common.BytesToAddress([]byte{0x10}): &bls12381G2MultiExp{},
-	common.BytesToAddress([]byte{0x11}): &bls12381Pairing{},
-	common.BytesToAddress([]byte{0x12}): &bls12381MapG1{},
-	common.BytesToAddress([]byte{0x13}): &bls12381MapG2{},
+	common.BytesToAddress([]byte{0x01}):       &ecrecover{},
+	common.BytesToAddress([]byte{0x02}):       &sha256hash{},
+	common.BytesToAddress([]byte{0x03}):       &ripemd160hash{},
+	common.BytesToAddress([]byte{0x04}):       &dataCopy{},
+	common.BytesToAddress([]byte{0x05}):       &bigModExp{eip2565: true},
+	common.BytesToAddress([]byte{0x06}):       &bn256AddIstanbul{},
+	common.BytesToAddress([]byte{0x07}):       &bn256ScalarMulIstanbul{},
+	common.BytesToAddress([]byte{0x08}):       &bn256PairingIstanbul{},
+	common.BytesToAddress([]byte{0x09}):       &blake2F{},
+	common.BytesToAddress([]byte{0x0a}):       &kzgPointEvaluation{},
+	common.BytesToAddress([]byte{0x0b}):       &bls12381G1Add{},
+	common.BytesToAddress([]byte{0x0c}):       &bls12381G1Mul{},
+	common.BytesToAddress([]byte{0x0d}):       &bls12381G1MultiExp{},
+	common.BytesToAddress([]byte{0x0e}):       &bls12381G2Add{},
+	common.BytesToAddress([]byte{0x0f}):       &bls12381G2Mul{},
+	common.BytesToAddress([]byte{0x10}):       &bls12381G2MultiExp{},
+	common.BytesToAddress([]byte{0x11}):       &bls12381Pairing{},
+	common.BytesToAddress([]byte{0x12}):       &bls12381MapG1{},
+	common.BytesToAddress([]byte{0x13}):       &bls12381MapG2{},
+	common.BytesToAddress([]byte{0x01, 0x00}): &p256Verify{},
 }
 
 var PrecompiledContractsBLS = PrecompiledContractsPrague

core/vm/contracts_test.go

@@ -20,11 +20,15 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"math"
+	"math/big"
 	"os"
 	"testing"
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/params"
+	"gotest.tools/assert"
 )
 
 // precompiledTest defines the input/output pairs for precompiled contract tests.
@@ -434,3 +438,23 @@ func TestPrecompiledP256Verify(t *testing.T) {
 
 	testJson("p256Verify", "100", t)
 }
+
+// BOR: if this test failed, it means you should include PrecompiledP256Verify in the PrecompiledContracts
+// TODO: handle when common.BytesToAddress([]byte{0x01, 0x00}) will colide a new Ethereum's precompile
+func TestPrecompiledP256VerifyAlwaysAvailableInHFs(t *testing.T) {
+	latestHfRules := params.BorMainnetChainConfig.Rules(big.NewInt(math.MaxInt64), true, 0)
+	precompiledP256VerifyAddress := common.BytesToAddress([]byte{0x01, 0x00})
+
+	addresses := ActivePrecompiles(latestHfRules)
+	addressFound := false
+	for _, addr := range addresses {
+		if addr == precompiledP256VerifyAddress {
+			addressFound = true
+			break
+		}
+	}
+	assert.Equal(t, true, addressFound)
+
+	preCompiledContracts := ActivePrecompiledContracts(latestHfRules)
+	assert.Equal(t, &p256Verify{}, preCompiledContracts[precompiledP256VerifyAddress])
+}