From fc4808c51354485f31045f11840796b06a9bd7b8 Mon Sep 17 00:00:00 2001
From: Ethen Pociask <ethenpo@gmail.com>
Date: Wed, 14 Aug 2024 21:02:27 -0400
Subject: [PATCH] fix: Compute EigenDA preimage hash using preimage length - go
 fmt

---
 cmd/replay/main.go        | 2 +-
 eigenda/eigenda.go        | 2 +-
 eigenda/reader.go         | 8 +++-----
 eigenda/serialize.go      | 1 -
 eigenda/serialize_test.go | 3 +--
 eigenda/types.go          | 2 +-
 6 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/cmd/replay/main.go b/cmd/replay/main.go
index c9c9325f1..5e2abce1e 100644
--- a/cmd/replay/main.go
+++ b/cmd/replay/main.go
@@ -158,7 +158,7 @@ func (dasReader *EigenDAPreimageReader) QueryBlob(ctx context.Context, cert *eig
 	if err != nil {
 		return nil, err
 	}
-	
+
 	preimage, err := wavmio.ResolveTypedPreimage(arbutil.EigenDaPreimageType, *hash)
 	if err != nil {
 		return nil, err
diff --git a/eigenda/eigenda.go b/eigenda/eigenda.go
index 758be23a3..4218617c9 100644
--- a/eigenda/eigenda.go
+++ b/eigenda/eigenda.go
@@ -25,7 +25,7 @@ func init() {
 
 const (
 	sequencerMsgOffset = 41
-	MaxBatchSize = 2_000_000 // 2MB
+	MaxBatchSize       = 2_000_000 // 2MB
 )
 
 func IsEigenDAMessageHeaderByte(header byte) bool {
diff --git a/eigenda/reader.go b/eigenda/reader.go
index e0950e1ac..826e9f8fc 100644
--- a/eigenda/reader.go
+++ b/eigenda/reader.go
@@ -19,7 +19,6 @@ type readerForEigenDA struct {
 	readerEigenDA EigenDAReader
 }
 
-
 func (d *readerForEigenDA) IsValidHeaderByte(headerByte byte) bool {
 	return IsEigenDAMessageHeaderByte(headerByte)
 }
@@ -59,7 +58,6 @@ func RecoverPayloadFromEigenDABatch(ctx context.Context,
 		return nil, err
 	}
 
-
 	if preimageRecoder != nil {
 		// iFFT the preimage data
 		preimage, err := GenericEncodeBlob(data)
@@ -104,7 +102,7 @@ func ParseSequencerMsg(calldata []byte) (*EigenDABlobInfo, error) {
 }
 
 func uint32ToBytes(n uint32) []byte {
-    bytes := make([]byte, 4)
-    binary.BigEndian.PutUint32(bytes, n)
-    return bytes
+	bytes := make([]byte, 4)
+	binary.BigEndian.PutUint32(bytes, n)
+	return bytes
 }
diff --git a/eigenda/serialize.go b/eigenda/serialize.go
index a9ef45988..2b110079f 100644
--- a/eigenda/serialize.go
+++ b/eigenda/serialize.go
@@ -16,7 +16,6 @@ import (
 	- https://github.com/Layr-Labs/eigenda/blob/44569ec461c9a1dd1191e7999a72e63bd1e7aba9/api/clients/codecs/ifft_codec.go#L27-L38
 */
 
-
 func GenericDecodeBlob(data []byte) ([]byte, error) {
 	if len(data) <= 32 {
 		return nil, fmt.Errorf("data is not of length greater than 32 bytes: %d", len(data))
diff --git a/eigenda/serialize_test.go b/eigenda/serialize_test.go
index d6464b15d..e54508062 100644
--- a/eigenda/serialize_test.go
+++ b/eigenda/serialize_test.go
@@ -2,7 +2,6 @@ package eigenda
 
 import "testing"
 
-
 func Test_EncodeDecodeBlob(t *testing.T) {
 	rawBlob := []byte("optimistic nihilism")
 
@@ -19,4 +18,4 @@ func Test_EncodeDecodeBlob(t *testing.T) {
 	if string(decodedBlob) != string(rawBlob) {
 		t.Fatalf("decoded blob does not match raw blob")
 	}
-}
\ No newline at end of file
+}
diff --git a/eigenda/types.go b/eigenda/types.go
index f0ea0b782..d39f8939c 100644
--- a/eigenda/types.go
+++ b/eigenda/types.go
@@ -24,7 +24,7 @@ type EigenDABlobInfo struct {
 }
 
 /*
-	Unlike 4844 there's no need to inject a version byte into the 0th offset of the hash
+Unlike 4844 there's no need to inject a version byte into the 0th offset of the hash
 */
 func (e *EigenDABlobInfo) PreimageHash() (*common.Hash, error) {
 	kzgCommit, err := e.SerializeCommitment()