add some testcases

Author: hbakhtiyor

cases_test.go

@@ -38,6 +38,15 @@ var testCases = []struct {
 		nil,
 		"",
 	},
+	{
+		"6d6c66873739bc7bfb3526629670d0ea357e92cc4581490d62779ae15f6b787b",
+		"026d7f1d87ab3bbc8bc01f95d9aece1e659d6e33c880f8efa65facf83e698bbbf7",
+		"b2f0cd8ecb23c1710903f872c31b0fd37e15224af457722a87c5e0c7f50fffb3",
+		"68ca1cc46f291a385e7c255562068357f964532300beadffb72dd93668c0c1cac8d26132eb3200b86d66de9c661a464c6b2293bb9a9f5b966e53ca736c7e504f",
+		true,
+		nil,
+		"",
+	},
 	{
 		"",
 		"03DEFDEA4CDB677750A420FEE807EACF21EB9898AE79B9768766E4FAA04A2D4A34",
@@ -155,4 +164,13 @@ var testCases = []struct {
 		errors.New("s is larger than or equal to curve order"),
 		"sig[32:64] is equal to curve order",
 	},
+	{
+		"",
+		"6d6c66873739bc7bfb3526629670d0ea",
+		"b2f0cd8ecb23c1710903f872c31b0fd37e15224af457722a87c5e0c7f50fffb3",
+		"2A298DACAE57395A15D0795DDBFD1DCB564DA82B0F269BC70A74F8220429BA1D1E51A22CCEC35599B8F266912281F8365FFC2D035A230434A1A64DC59F7013FD",
+		false,
+		errors.New("signature verification failed"),
+		"public key is only 16 bytes",
+	},
 }

schnorr.go

@@ -85,7 +85,7 @@ func Verify(publicKey [33]byte, message [32]byte, signature [64]byte) (bool, err
 }
 
 // AggregateSignatures aggregates multiple signatures of different private keys over
-// the same message into a single 64 byte signature.
+// the same message into a single 64 byte signature. (Experimental)
 func AggregateSignatures(privateKeys []*big.Int, message [32]byte) ([64]byte, error) {
 	sig := [64]byte{}
 	if privateKeys == nil || len(privateKeys) == 0 {

schnorr_test.go

@@ -57,11 +57,11 @@ func TestAggregateSignatures(t *testing.T) {
 			continue
 		}
 
-		pubKey, ok := new(big.Int).SetString(test.pk, 16)
+		privKey, ok := new(big.Int).SetString(test.d, 16)
 		if !ok {
-			t.Fatalf("Unexpected error from new(big.Int).SetString(%s, 16)", test.pk)
+			t.Fatalf("Unexpected error from new(big.Int).SetString(%s, 16)", test.d)
 		}
-		pks = append(pks, pubKey)
+		pks = append(pks, privKey)
 
 		if i == 0 {
 			message, err := hex.DecodeString(test.m)
@@ -71,7 +71,7 @@ func TestAggregateSignatures(t *testing.T) {
 			copy(m[:], message)
 		}
 
-		Px, Py := Curve.ScalarBaseMult(pubKey.Bytes())
+		Px, Py := Curve.ScalarBaseMult(privKey.Bytes())
 		Pxs = append(Pxs, Px)
 		Pys = append(Pys, Py)
 	}