Remove signed blob sidecars (#17)

* go.mod: update zrnt, eth-clients

* Remove blob sidecar signing

README.md

@@ -80,4 +80,4 @@ The callback can then use the slot number to determine whether to throw an error
 - `POST` `/mock/invalid/payload/{type}/<slot|epoch>/{slot/epoch number}`: Enables specified [type](#payload-invalidation-types) of modification to payload built starting at the slot or epoch specified
 
 # Statistics
-- `GET` `/mock/stats/validation_errors`: Returns a JSON containing all the errors encountered when validating the submitted signed blinded responses from the consensus client (e.g. Invalid signature on submitted blinded block, invalid signature on submitted blinded blob sidecar)
+- `GET` `/mock/stats/validation_errors`: Returns a JSON containing all the errors encountered when validating the submitted signed blinded responses from the consensus client (e.g. Invalid signature on submitted blinded block)

go.mod

@@ -5,7 +5,7 @@ go 1.20
 require (
 	github.com/ethereum/go-ethereum v1.13.1
 	github.com/gorilla/mux v1.8.0
-	github.com/marioevz/eth-clients v0.0.0-20230925172743-e379ee1ecd6e
+	github.com/marioevz/eth-clients v0.0.0-20230925201418-d5fbddd99b76
 	github.com/protolambda/bls12-381-util v0.0.0-20220416220906-d8552aa452c7
 	github.com/protolambda/eth2api v0.0.0-20230316214135-5f8afbd6d05d
 	github.com/protolambda/zrnt v0.30.0
@@ -79,4 +79,6 @@ require (
 
 replace github.com/protolambda/eth2api => github.com/marioevz/eth2api v0.0.0-20230922201437-72bd1301e033
 
-replace github.com/protolambda/zrnt => github.com/marioevz/zrnt v0.26.2-0.20230922170744-1bd341bc7f0f
+replace github.com/protolambda/zrnt => github.com/marioevz/zrnt v0.26.2-0.20231109183115-d2098ec1f42c
+
+replace github.com/protolambda/ztyp => github.com/marioevz/ztyp v0.0.0-20231106221254-dd6f24f13fd9

go.sum

@@ -207,12 +207,14 @@ github.com/labstack/echo/v4 v4.5.0/go.mod h1:czIriw4a0C1dFun+ObrXp7ok03xON0N1awS
 github.com/labstack/gommon v0.3.0/go.mod h1:MULnywXg0yavhxWKc+lOruYdAhDwPK9wf0OL7NoOu+k=
 github.com/leanovate/gopter v0.2.9 h1:fQjYxZaynp97ozCzfOyOuAGOU4aU/z37zf/tOujFk7c=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
-github.com/marioevz/eth-clients v0.0.0-20230925172743-e379ee1ecd6e h1:uBr6Gn5jBHnyoS34HV4GOiYjuua6J/F2FST0T6MO89E=
-github.com/marioevz/eth-clients v0.0.0-20230925172743-e379ee1ecd6e/go.mod h1:YVrdn57Q3rAzm3wus4T9tg1vMPca4csVbzorPhkGCW0=
+github.com/marioevz/eth-clients v0.0.0-20230925201418-d5fbddd99b76 h1:fj+aeR3YLmSRUWjOGgTxNMdvzm72J5JbKGKosNO/jkE=
+github.com/marioevz/eth-clients v0.0.0-20230925201418-d5fbddd99b76/go.mod h1:YVrdn57Q3rAzm3wus4T9tg1vMPca4csVbzorPhkGCW0=
 github.com/marioevz/eth2api v0.0.0-20230922201437-72bd1301e033 h1:sn57n+lbJrLS8FKYs08W7TEzraTGOCQGrSC4hni6rYw=
 github.com/marioevz/eth2api v0.0.0-20230922201437-72bd1301e033/go.mod h1:hcwWCT4sF1X7KsMZ535MvDZVk5M20Uyj+x2LARZjQsM=
-github.com/marioevz/zrnt v0.26.2-0.20230922170744-1bd341bc7f0f h1:ysmQCP5asLCdFHib4ykgHVUSzCy9UEysElhMwJPmcg4=
-github.com/marioevz/zrnt v0.26.2-0.20230922170744-1bd341bc7f0f/go.mod h1:MzAcHPo2QQIx+IEPdxXMiqKtYRUlszz7RA/fhAuOm1I=
+github.com/marioevz/zrnt v0.26.2-0.20231109183115-d2098ec1f42c h1:ZwKLkGVKnAq1JZql6SBrQici0la1X7APcbBLwmrSsd4=
+github.com/marioevz/zrnt v0.26.2-0.20231109183115-d2098ec1f42c/go.mod h1:ZctXHBa/2rlF85iao8oqQ8264DbEBBGWr6lwIOW2yv4=
+github.com/marioevz/ztyp v0.0.0-20231106221254-dd6f24f13fd9 h1:e40k7kQLw2jyDg4+Mc+TVSSfm1TO51NxPZo9T7nVCzM=
+github.com/marioevz/ztyp v0.0.0-20231106221254-dd6f24f13fd9/go.mod h1:9bYgKGqg3wJqT9ac1gI2hnVb0STQq7p/1lapqrqY1dU=
 github.com/mattn/go-colorable v0.1.2/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
 github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
 github.com/mattn/go-colorable v0.1.11/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4=
@@ -280,8 +282,6 @@ github.com/prometheus/procfs v0.9.0 h1:wzCHvIvM5SxWqYvwgVL7yJY8Lz3PKn49KQtpgMYJf
 github.com/prometheus/procfs v0.9.0/go.mod h1:+pB4zwohETzFnmlpe6yd2lSc+0/46IYZRB/chUwxUZY=
 github.com/protolambda/bls12-381-util v0.0.0-20220416220906-d8552aa452c7 h1:cZC+usqsYgHtlBaGulVnZ1hfKAi8iWtujBnRLQE698c=
 github.com/protolambda/bls12-381-util v0.0.0-20220416220906-d8552aa452c7/go.mod h1:IToEjHuttnUzwZI5KBSM/LOOW3qLbbrHOEfp3SbECGY=
-github.com/protolambda/ztyp v0.2.2 h1:rVcL3vBu9W/aV646zF6caLS/dyn9BN8NYiuJzicLNyY=
-github.com/protolambda/ztyp v0.2.2/go.mod h1:9bYgKGqg3wJqT9ac1gI2hnVb0STQq7p/1lapqrqY1dU=
 github.com/rauljordan/engine-proxy v0.0.0-20230316220057-4c80c36c4c3a h1:ZIfMLprHVdo2vs3WcSqSDEyz2ZsSzDhGeOyxh8VQThA=
 github.com/rauljordan/engine-proxy v0.0.0-20230316220057-4c80c36c4c3a/go.mod h1:9OVXfWYnIV+wj1/SqfdREmE5mzN/OANAgdOJRtFtvpo=
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=

mock/mock_builder.go

@@ -1171,7 +1171,7 @@ func (m *MockBuilder) HandleSubmitBlindedBlock(
 		signedBeaconResponse common.SignedBeaconResponse
 	)
 	if m.cfg.spec.SlotToEpoch(slot) >= m.cfg.spec.DENEB_FORK_EPOCH {
-		signedBeaconResponse = &deneb.SignedBlindedBlockContents{}
+		signedBeaconResponse = &deneb.SignedBeaconResponse{}
 	} else if m.cfg.spec.SlotToEpoch(slot) >= m.cfg.spec.CAPELLA_FORK_EPOCH {
 		signedBeaconResponse = &capella.SignedBeaconResponse{}
 	} else if m.cfg.spec.SlotToEpoch(slot) >= m.cfg.spec.BELLATRIX_FORK_EPOCH {

types/deneb/deneb.go

@@ -1,6 +1,7 @@
 package deneb
 
 import (
+	"bytes"
 	"fmt"
 	"math/big"
 
@@ -16,36 +17,32 @@ import (
 
 const Version = "deneb"
 
-type SignedBlindedBlockContents struct {
-	// We use the unblinded version of the
-	SignedBlindedBeaconBlock  deneb.SignedBlindedBeaconBlock   `json:"signed_blinded_block" yaml:"signed_blinded_block"`
-	SignedBlindedBlobSidecars []deneb.SignedBlindedBlobSidecar `json:"signed_blinded_blob_sidecars" yaml:"signed_blinded_blob_sidecars"`
-}
+type SignedBeaconResponse deneb.SignedBlindedBeaconBlock
 
-func (s *SignedBlindedBlockContents) ExecutionPayloadHash() el_common.Hash {
+func (s *SignedBeaconResponse) ExecutionPayloadHash() el_common.Hash {
 	var hash el_common.Hash
-	copy(hash[:], s.SignedBlindedBeaconBlock.Message.Body.ExecutionPayloadHeader.BlockHash[:])
+	copy(hash[:], s.Message.Body.ExecutionPayloadHeader.BlockHash[:])
 	return hash
 }
 
-func (s *SignedBlindedBlockContents) Root(spec *beacon.Spec) tree.Root {
-	return s.SignedBlindedBeaconBlock.Message.HashTreeRoot(spec, tree.GetHashFn())
+func (s *SignedBeaconResponse) Root(spec *beacon.Spec) tree.Root {
+	return s.Message.HashTreeRoot(spec, tree.GetHashFn())
 }
 
-func (s *SignedBlindedBlockContents) StateRoot() tree.Root {
-	return s.SignedBlindedBeaconBlock.Message.StateRoot
+func (s *SignedBeaconResponse) StateRoot() tree.Root {
+	return s.Message.StateRoot
 }
 
-func (s *SignedBlindedBlockContents) Slot() beacon.Slot {
-	return s.SignedBlindedBeaconBlock.Message.Slot
+func (s *SignedBeaconResponse) Slot() beacon.Slot {
+	return s.Message.Slot
 }
 
-func (s *SignedBlindedBlockContents) ProposerIndex() beacon.ValidatorIndex {
-	return s.SignedBlindedBeaconBlock.Message.ProposerIndex
+func (s *SignedBeaconResponse) ProposerIndex() beacon.ValidatorIndex {
+	return s.Message.ProposerIndex
 }
 
-func (s *SignedBlindedBlockContents) BlockSignature() *beacon.BLSSignature {
-	return &s.SignedBlindedBeaconBlock.Signature
+func (s *SignedBeaconResponse) BlockSignature() *beacon.BLSSignature {
+	return &s.Signature
 }
 
 type UnblindedResponseData struct {
@@ -54,18 +51,18 @@ type UnblindedResponseData struct {
 }
 
 func (b *BuilderBid) ValidateReveal(publicKey *blsu.Pubkey, signedBeaconResponse common.SignedBeaconResponse, spec *beacon.Spec, slot beacon.Slot, genesisValidatorsRoot *tree.Root) (*common.UnblindedResponse, error) {
-	sbb, ok := signedBeaconResponse.(*SignedBlindedBlockContents)
+	sbb, ok := signedBeaconResponse.(*SignedBeaconResponse)
 	if !ok {
 		return nil, fmt.Errorf("invalid signed beacon response")
 	}
 
-	blockRoot := sbb.SignedBlindedBeaconBlock.Message.HashTreeRoot(spec, tree.GetHashFn())
-	s, err := sbb.SignedBlindedBeaconBlock.Signature.Signature()
+	blockRoot := sbb.Message.HashTreeRoot(spec, tree.GetHashFn())
+	s, err := sbb.Signature.Signature()
 	if err != nil {
 		return nil, fmt.Errorf("unable to validate block signature: %v", err)
 	}
 
-	beaconBlock, err := sbb.SignedBlindedBeaconBlock.Message.Unblind(spec, b.Payload.ExecutionPayload)
+	beaconBlock, err := sbb.Message.Unblind(spec, b.Payload.ExecutionPayload)
 	if err != nil {
 		return nil, fmt.Errorf("failed to unblind block: %v", err)
 	}
@@ -82,36 +79,10 @@ func (b *BuilderBid) ValidateReveal(publicKey *blsu.Pubkey, signedBeaconResponse
 		return nil, fmt.Errorf("invalid block signature")
 	}
 
-	for i, signedBlindedBlobSidecar := range sbb.SignedBlindedBlobSidecars {
-
-		blobSidecar := deneb.BlobSidecar{
-			BlockRoot:       blockRoot,
-			Index:           deneb.BlobIndex(i),
-			Slot:            slot,
-			BlockParentRoot: b.ParentBlockRoot,
-			ProposerIndex:   b.ProposerIndex,
-			Blob:            b.BlobsBundle.BlobsBundle.Blobs[i],
-			KZGCommitment:   b.BlobsBundle.BlobsBundle.KZGCommitments[i],
-			KZGProof:        b.BlobsBundle.BlobsBundle.KZGProofs[i],
-		}
-
-		// Compare roots
-		rootWant := blobSidecar.HashTreeRoot(spec, tree.GetHashFn())
-		// Calculating root of a blinded blob sidecar does not require the spec because only the blob length is spec-dependent
-		root := signedBlindedBlobSidecar.Message.HashTreeRoot(tree.GetHashFn())
-		if root != rootWant {
-			return nil, fmt.Errorf("unblinded blob sidecar roots don't match: want: %s, got: %s", rootWant, root)
-		}
-
-		s, err := signedBlindedBlobSidecar.Signature.Signature()
-		if err != nil {
-			return nil, fmt.Errorf("unable to validate blob sidecar signature: %v", err)
-		}
-
-		dom := beacon.ComputeDomain(beacon.DOMAIN_BLOB_SIDECAR, forkVersion, *genesisValidatorsRoot)
-		signingRoot := beacon.ComputeSigningRoot(root, dom)
-		if !blsu.Verify(publicKey, signingRoot[:], s) {
-			return nil, fmt.Errorf("blob sidecar %d invalid signature", i)
+	// Verify kzg commitments in signed header
+	for i, kzgCommitment := range sbb.Message.Body.BlobKZGCommitments {
+		if !bytes.Equal(b.BlobsBundle.KZGCommitments[i][:], kzgCommitment[:]) {
+			return nil, fmt.Errorf("invalid kzg commitment")
 		}
 	}
 
@@ -165,7 +136,7 @@ type BuilderBid struct {
 	Payload                  *ExecutionPayload             `json:"-" yaml:"-"`
 	Header                   *deneb.ExecutionPayloadHeader `json:"header" yaml:"header"`
 	BlobsBundle              *BlobsBundle                  `json:"-" yaml:"-"`
-	BlindedBlobsBundle       *deneb.BlindedBlobsBundle     `json:"blinded_blobs_bundle" yaml:"blinded_blobs_bundle"`
+	BlobKZGCommitments       *beacon.KZGCommitments        `json:"blob_kzg_commitments" yaml:"blob_kzg_commitments"`
 	Value                    view.Uint256View              `json:"value"  yaml:"value"`
 	PubKey                   beacon.BLSPubkey              `json:"pubkey" yaml:"pubkey"`
 	common.BuilderBidContext `json:"-" yaml:"-"`
@@ -180,7 +151,7 @@ func (b *BuilderBid) Version() string {
 func (b *BuilderBid) HashTreeRoot(spec *beacon.Spec, hFn tree.HashFn) tree.Root {
 	return hFn.HashTreeRoot(
 		b.Header,
-		spec.Wrap(b.BlindedBlobsBundle),
+		spec.Wrap(b.BlobKZGCommitments),
 		&b.Value,
 		&b.PubKey,
 	)
@@ -215,7 +186,7 @@ func (b *BuilderBid) Build(
 		return err
 	}
 
-	b.BlindedBlobsBundle = b.BlobsBundle.Blinded(spec, tree.GetHashFn())
+	b.BlobKZGCommitments = &b.BlobsBundle.KZGCommitments
 
 	b.ParentBlockRoot = parentBlockRoot
 	b.Slot = slot

types/deneb/deneb_test.go

@@ -66,8 +66,8 @@ func TestDenebBidBuilding(t *testing.T) {
 		t.Fatal("header not built")
 	}
 
-	if bid.BlindedBlobsBundle == nil {
-		t.Fatal("blinded blobs bundle not built")
+	if bid.BlobKZGCommitments == nil {
+		t.Fatal("blob kzg commitments empty")
 	}
 
 	if bid.BlobsBundle == nil {
@@ -83,19 +83,9 @@ func TestDenebBidBuilding(t *testing.T) {
 		}
 	}
 
-	if len(bid.BlindedBlobsBundle.BlobRoots) != len(bid.BlobsBundle.Blobs) {
-		t.Fatal("invalid blinded blobs bundle")
-	}
-
-	for i, blobRoot := range bid.BlindedBlobsBundle.BlobRoots {
-		calcRoot := bid.BlobsBundle.Blobs[i].HashTreeRoot(spec, tree.GetHashFn())
-		fmt.Printf("blob root %d: %s\n", i, calcRoot)
-		if !bytes.Equal(blobRoot[:], calcRoot[:]) {
-			t.Fatalf("hash tree root mismatch on root %d", i)
-		}
-		// Check also if the root is not zero
-		if blobRoot == tree.Root([32]byte{}) {
-			t.Fatalf("zero hash tree root mismatch on root %d: %s", i, blobRoot)
+	for i, blobKzg := range *bid.BlobKZGCommitments {
+		if !bytes.Equal(blobKzg[:], bid.BlobsBundle.KZGCommitments[i][:]) {
+			t.Fatalf("blob kzg commitment %d not set", i)
 		}
 	}
 }
@@ -108,33 +98,31 @@ func TestBidHashTreeRoot(t *testing.T) {
 		{
 			jsonBid: `{
 				"header": {
-					"parent_hash": "0x190caa185cdeb86d0a7472e6447a92a39b762f4ea696d3d19d47bba4eb7fa935",
-					"fee_recipient": "0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b",
-					"state_root": "0x2affac6b1bdc0a25fea0175fa6be328ebb16f880f0f1fdf458bd7bf19842fa60",
-					"receipts_root": "0x7aca796fcc5d37e5c8dd6705e01b315fa28619159a1347cd14aabef1d52ff035",
-					"logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
-					"prev_randao": "0xd361841f2f8648166b502b92bded23fcaf0610cc41705e2d64e7450500743511",
-					"block_number": "35",
-					"gas_limit": "30000000",
-					"gas_used": "840000",
-					"timestamp": "1693427860",
-					"extra_data": "0x6275696c646572207061796c6f616420747374",
-					"base_fee_per_gas": "11703946",
-					"block_hash": "0x8ed0f7bc908d61f7e453d3dc5ffc52694a3e584cc9119b63f12a30f193b068bf",
-					"transactions_root": "0x58ebe57ba95bd5d191bd94a8612be571f5b26e83dd2314c20caad3ddbb69799d",
-					"withdrawals_root": "0x792930bbd5baac43bcc798ee49aa8185ef76bb3b44ba62b91d86ae569e4bb535",
-					"blob_gas_used": "0",
-					"excess_blob_gas": "0"
-				},
-				"blinded_blobs_bundle": {
-					"commitments": [],
-					"proofs": [],
-					"blob_roots": []
+				  "parent_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+				  "fee_recipient": "0xabcf8e0d4e9587369b2301d0790347320302cc09",
+				  "state_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+				  "receipts_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+				  "logs_bloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
+				  "prev_randao": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+				  "block_number": "1",
+				  "gas_limit": "1",
+				  "gas_used": "1",
+				  "timestamp": "1",
+				  "extra_data": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+				  "base_fee_per_gas": "1",
+				  "blob_gas_used": "1",
+				  "excess_blob_gas": "1",
+				  "block_hash": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+				  "transactions_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2",
+				  "withdrawals_root": "0xcf8e0d4e9587369b2301d0790347320302cc0943d5a1884560367e8208d920f2"
 				},
-				"value": "8400000000000000",
-				"pubkey": "0x95fde78acd5f6886ddaf5d0056610167c513d09c1c0efabbc7cdcc69beea113779c4a81e2d24daafc5387dbf6ac5fe48"
-			}`,
-			expectedHTR: "0xed095772eca7c6c826a33e9945380a749b2d88f347f018ed46d97582c5f9a955",
+				"blob_kzg_commitments": [
+				  "0xa94170080872584e54a1cf092d845703b13907f2e6b3b1c0ad573b910530499e3bcd48c6378846b80d2bfa58c81cf3d5"
+				],
+				"value": "1",
+				"pubkey": "0x93247f2209abcacf57b75a51dafae777f9dd38bc7053d1af526f220a7489a6d3a2753e5f3e8b1cfe39b56f43611df74a"
+			  }`,
+			expectedHTR: "0xb8badff2ce16663a6a3100943d008c6a64d996ca6f7b4310a4c690015b3fb587",
 		},
 	} {
 		t.Run(fmt.Sprintf("htr-%d", i), func(t *testing.T) {