fix(sigmap-EDAP-01): Missing nil Checks On Parameters Of Incoming Req…

…uests

store/generated_key/eigenda/eigenda.go

@@ -59,6 +59,11 @@ func (e Store) Get(ctx context.Context, key []byte) ([]byte, error) {
 		return nil, fmt.Errorf("failed to decode DA cert to RLP format: %w", err)
 	}
 
+	err = cert.NoNilFields()
+	if err != nil {
+		return nil, fmt.Errorf("failed to verify DA cert: %w", err)
+	}
+
 	decodedBlob, err := e.client.GetBlob(ctx, cert.BlobVerificationProof.BatchMetadata.BatchHeaderHash, cert.BlobVerificationProof.BlobIndex)
 	if err != nil {
 		return nil, fmt.Errorf("EigenDA client failed to retrieve decoded blob: %w", err)
@@ -119,6 +124,11 @@ func (e Store) Put(ctx context.Context, value []byte) ([]byte, error) {
 	}
 	cert := (*verify.Certificate)(blobInfo)
 
+	err = cert.NoNilFields()
+	if err != nil {
+		return nil, fmt.Errorf("failed to verify DA cert: %w", err)
+	}
+
 	err = e.verifier.VerifyCommitment(cert.BlobHeader.Commitment, encodedBlob)
 	if err != nil {
 		return nil, fmt.Errorf("failed to verify commitment: %w", err)

verify/certificate.go

@@ -1,6 +1,7 @@
 package verify
 
 import (
+	"fmt"
 	"math/big"
 
 	"github.com/Layr-Labs/eigenda/api/grpc/disperser"
@@ -29,6 +30,19 @@ type BlobHeader struct {
 
 type Certificate disperser.BlobInfo
 
+// NoNilFields ... check if struct pointer fields are nil
+func (c *Certificate) NoNilFields() error {
+	if c.BlobVerificationProof == nil {
+		return fmt.Errorf("BlobVerificationProof is nil")
+	}
+
+	if c.BlobHeader == nil {
+		return fmt.Errorf("BlobHeader is nil")
+	}
+
+	return nil
+}
+
 func (c *Certificate) BlobIndex() uint32 {
 	return c.BlobVerificationProof.BlobIndex
 }