added block header verification in sidecars

berachain · Oct 28, 2024 · 57a67a1 · 57a67a1
1 parent 16540c0
commit 57a67a1
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Showing 5 changed files with 31 additions and 10 deletions.
diff --git a/mod/da/pkg/blob/processor.go b/mod/da/pkg/blob/processor.go
@@ -45,7 +45,7 @@ type Processor[
 	// chainSpec defines the specifications of the blockchain.
 	chainSpec common.ChainSpec
 	// verifier is responsible for verifying the blobs.
-	verifier BlobVerifier[BlobSidecarsT]
+	verifier BlobVerifier[BlobSidecarsT, BeaconBlockHeaderT]
 	// blockBodyOffsetFn is a function that calculates the block body offset
 	// based on the slot and chain specifications.
 	blockBodyOffsetFn func(math.Slot, common.ChainSpec) uint64
@@ -66,7 +66,7 @@ func NewProcessor[
 ](
 	logger log.Logger,
 	chainSpec common.ChainSpec,
-	verifier BlobVerifier[BlobSidecarsT],
+	verifier BlobVerifier[BlobSidecarsT, BeaconBlockHeaderT],
 	blockBodyOffsetFn func(math.Slot, common.ChainSpec) uint64,
 	telemetrySink TelemetrySink,
 ) *Processor[
@@ -94,6 +94,7 @@ func (sp *Processor[
 	var (
 		startTime = time.Now()
 		sidecars  = cs.GetSidecars()
+		blkHeader = cs.GetHeader()
 	)
 	defer sp.metrics.measureVerifySidecarsDuration(
 		startTime, math.U64(sidecars.Len()),
@@ -111,6 +112,7 @@ func (sp *Processor[
 			sidecars.Get(0).GetBeaconBlockHeader().GetSlot(),
 			sp.chainSpec,
 		),
+		blkHeader,
 	)
 }
 

diff --git a/mod/da/pkg/blob/types.go b/mod/da/pkg/blob/types.go
@@ -60,10 +60,14 @@ type BeaconBlockHeader interface {
 }
 
 //nolint:revive // name conflict
-type BlobVerifier[BlobSidecarsT any] interface {
+type BlobVerifier[BlobSidecarsT, BeaconBlockHeaderT any] interface {
 	VerifyInclusionProofs(scs BlobSidecarsT, kzgOffset uint64) error
 	VerifyKZGProofs(scs BlobSidecarsT) error
-	VerifySidecars(sidecars BlobSidecarsT, kzgOffset uint64) error
+	VerifySidecars(
+		sidecars BlobSidecarsT,
+		kzgOffset uint64,
+		blkHeader BeaconBlockHeaderT,
+	) error
 }
 
 type ConsensusSidecars[BlobSidecarsT any, BeaconBlockHeaderT any] interface {

diff --git a/mod/da/pkg/blob/verifier.go b/mod/da/pkg/blob/verifier.go
@@ -22,6 +22,8 @@ package blob
 
 import (
 	"context"
+	"fmt"
+	"reflect"
 	"time"
 
 	"github.com/berachain/beacon-kit/mod/da/pkg/kzg"
@@ -60,7 +62,9 @@ func NewVerifier[
 // VerifySidecars verifies the blobs for both inclusion as well
 // as the KZG proofs.
 func (bv *Verifier[_, _, BlobSidecarsT]) VerifySidecars(
-	sidecars BlobSidecarsT, kzgOffset uint64,
+	sidecars BlobSidecarsT,
+	kzgOffset uint64,
+	blkHeader BeaconBlockHeader,
 ) error {
 	var (
 		g, _      = errgroup.WithContext(context.Background())
@@ -72,6 +76,12 @@ func (bv *Verifier[_, _, BlobSidecarsT]) VerifySidecars(
 		bv.proofVerifier.GetImplementation(),
 	)
 
+	for i, s := range sidecars.GetSidecars() {
+		if !reflect.DeepEqual(s, blkHeader) {
+			return fmt.Errorf("unequal block header: idx %d", i)
+		}
+	}
+
 	// Verify the inclusion proofs on the blobs concurrently.
 	g.Go(func() error {
 		// TODO: KZGOffset needs to be configurable and not

diff --git a/mod/node-core/pkg/components/blobs.go b/mod/node-core/pkg/components/blobs.go
@@ -80,11 +80,12 @@ func ProvideBlobVerifier[
 // BlobProcessorIn is the input for the BlobProcessor.
 type BlobProcessorIn[
 	BlobSidecarsT any,
+	BeaconBlockHeaderT BeaconBlockHeader[BeaconBlockHeaderT],
 	LoggerT any,
 ] struct {
 	depinject.In
 
-	BlobVerifier  BlobVerifier[BlobSidecarsT]
+	BlobVerifier  BlobVerifier[BlobSidecarsT, BeaconBlockHeaderT]
 	ChainSpec     common.ChainSpec
 	Logger        LoggerT
 	TelemetrySink *metrics.TelemetrySink
@@ -101,7 +102,7 @@ func ProvideBlobProcessor[
 	BlobSidecarsT BlobSidecars[BlobSidecarsT, BlobSidecarT],
 	LoggerT log.AdvancedLogger[LoggerT],
 ](
-	in BlobProcessorIn[BlobSidecarsT, LoggerT],
+	in BlobProcessorIn[BlobSidecarsT, BeaconBlockHeaderT, LoggerT],
 ) *dablob.Processor[
 	AvailabilityStoreT, BeaconBlockBodyT, BeaconBlockHeaderT,
 	ConsensusSidecarsT, BlobSidecarT, BlobSidecarsT,

diff --git a/mod/node-core/pkg/components/interfaces.go b/mod/node-core/pkg/components/interfaces.go
@@ -194,7 +194,7 @@ type (
 	// BeaconStateMarshallable represents an interface for a beacon state
 	// with generic types.
 	BeaconStateMarshallable[
-		T any,
+		T,
 		BeaconBlockHeaderT,
 		Eth1DataT,
 		ExecutionPayloadHeaderT,
@@ -270,10 +270,14 @@ type (
 		VerifyInclusionProofs(kzgOffset uint64) error
 	}
 
-	BlobVerifier[BlobSidecarsT any] interface {
+	BlobVerifier[BlobSidecarsT, BeaconBlockHeaderT any] interface {
 		VerifyInclusionProofs(scs BlobSidecarsT, kzgOffset uint64) error
 		VerifyKZGProofs(scs BlobSidecarsT) error
-		VerifySidecars(sidecars BlobSidecarsT, kzgOffset uint64) error
+		VerifySidecars(
+			sidecars BlobSidecarsT,
+			kzgOffset uint64,
+			blkHeader BeaconBlockHeaderT,
+		) error
 	}
 
 	// 	// BlockchainService defines the interface for interacting with the