-
Notifications
You must be signed in to change notification settings - Fork 169
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
5 changed files
with
184 additions
and
10 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,79 @@ | ||
package auth | ||
|
||
import ( | ||
"crypto/ecdsa" | ||
"encoding/hex" | ||
"fmt" | ||
"log" | ||
|
||
commonpb "github.com/Layr-Labs/eigenda/api/grpc/common" | ||
"github.com/Layr-Labs/eigenda/core" | ||
"github.com/ethereum/go-ethereum/common" | ||
"github.com/ethereum/go-ethereum/crypto" | ||
) | ||
|
||
type PaymentSigner struct { | ||
PrivateKey *ecdsa.PrivateKey | ||
} | ||
|
||
var _ core.PaymentSigner = &PaymentSigner{} | ||
|
||
func NewPaymentSigner(privateKeyHex string) *PaymentSigner { | ||
|
||
privateKeyBytes := common.FromHex(privateKeyHex) | ||
privateKey, err := crypto.ToECDSA(privateKeyBytes) | ||
if err != nil { | ||
log.Fatalf("Failed to parse private key: %v", err) | ||
} | ||
|
||
return &PaymentSigner{ | ||
PrivateKey: privateKey, | ||
} | ||
} | ||
|
||
func (s *PaymentSigner) SignBlobPayment(header *commonpb.PaymentHeader) ([]byte, error) { | ||
// Set the account id to the hex encoded public key of the signer | ||
header.AccountId = hex.EncodeToString(crypto.FromECDSAPub(&s.PrivateKey.PublicKey)) | ||
pm := core.ConvertPaymentHeader(header) | ||
hash := pm.Hash() | ||
|
||
sig, err := crypto.Sign(hash.Bytes(), s.PrivateKey) | ||
if err != nil { | ||
return nil, fmt.Errorf("failed to sign hash: %v", err) | ||
} | ||
|
||
return sig, nil | ||
} | ||
|
||
type NoopPaymentSigner struct{} | ||
|
||
func NewNoopPaymentSigner() *NoopPaymentSigner { | ||
return &NoopPaymentSigner{} | ||
} | ||
|
||
func (s *NoopPaymentSigner) SignBlobPayment(header *commonpb.PaymentHeader) ([]byte, error) { | ||
return nil, fmt.Errorf("noop signer cannot sign blob payment header") | ||
} | ||
|
||
// VerifyPaymentSignature verifies the signature against the payment metadata | ||
func VerifyPaymentSignature(paymentHeader *commonpb.PaymentHeader, paymentSignature []byte) bool { | ||
pubKeyBytes, err := hex.DecodeString(paymentHeader.AccountId) | ||
if err != nil { | ||
log.Printf("Failed to decode AccountId: %v\n", err) | ||
return false | ||
} | ||
accountPubKey, err := crypto.UnmarshalPubkey(pubKeyBytes) | ||
if err != nil { | ||
log.Printf("Failed to unmarshal public key: %v\n", err) | ||
return false | ||
} | ||
|
||
pm := core.ConvertPaymentHeader(paymentHeader) | ||
hash := pm.Hash() | ||
|
||
return crypto.VerifySignature( | ||
crypto.FromECDSAPub(accountPubKey), | ||
hash.Bytes(), | ||
paymentSignature[:len(paymentSignature)-1], // Remove recovery ID | ||
) | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,78 @@ | ||
package auth_test | ||
|
||
import ( | ||
"encoding/hex" | ||
"testing" | ||
|
||
commonpb "github.com/Layr-Labs/eigenda/api/grpc/common" | ||
"github.com/Layr-Labs/eigenda/core/auth" | ||
"github.com/ethereum/go-ethereum/crypto" | ||
"github.com/stretchr/testify/assert" | ||
"github.com/stretchr/testify/require" | ||
) | ||
|
||
func TestPaymentSigner(t *testing.T) { | ||
// Generate a new private key for testing | ||
privateKey, err := crypto.GenerateKey() | ||
// publicKey := &privateKey.PublicKey | ||
require.NoError(t, err) | ||
|
||
privateKeyHex := hex.EncodeToString(crypto.FromECDSA(privateKey)) | ||
signer := auth.NewPaymentSigner(privateKeyHex) | ||
|
||
t.Run("SignBlobPayment", func(t *testing.T) { | ||
header := &commonpb.PaymentHeader{ | ||
BinIndex: 1, | ||
CumulativePayment: []byte{0x01, 0x02, 0x03}, | ||
AccountId: "", | ||
} | ||
|
||
signature, err := signer.SignBlobPayment(header) | ||
require.NoError(t, err) | ||
assert.NotEmpty(t, signature) | ||
|
||
// Verify the signature | ||
isValid := auth.VerifyPaymentSignature(header, signature) | ||
assert.True(t, isValid) | ||
}) | ||
|
||
t.Run("VerifyPaymentSignature_InvalidSignature", func(t *testing.T) { | ||
header := &commonpb.PaymentHeader{ | ||
BinIndex: 1, | ||
CumulativePayment: []byte{0x01, 0x02, 0x03}, | ||
AccountId: "", | ||
} | ||
|
||
// Create an invalid signature | ||
invalidSignature := make([]byte, 65) | ||
isValid := auth.VerifyPaymentSignature(header, invalidSignature) | ||
assert.False(t, isValid) | ||
}) | ||
|
||
t.Run("VerifyPaymentSignature_ModifiedHeader", func(t *testing.T) { | ||
header := &commonpb.PaymentHeader{ | ||
BinIndex: 1, | ||
CumulativePayment: []byte{0x01, 0x02, 0x03}, | ||
AccountId: "", | ||
} | ||
|
||
signature, err := signer.SignBlobPayment(header) | ||
require.NoError(t, err) | ||
|
||
// Modify the header after signing | ||
header.BinIndex = 2 | ||
|
||
isValid := auth.VerifyPaymentSignature(header, signature) | ||
assert.False(t, isValid) | ||
}) | ||
} | ||
|
||
func TestNoopPaymentSigner(t *testing.T) { | ||
signer := auth.NewNoopPaymentSigner() | ||
|
||
t.Run("SignBlobRequest", func(t *testing.T) { | ||
_, err := signer.SignBlobPayment(nil) | ||
assert.Error(t, err) | ||
assert.Contains(t, err.Error(), "noop signer cannot sign blob payment header") | ||
}) | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters