add ed25519 key derivation test, update ed25519 keys in dev/gssmr gen…

…esis

chain/dev/genesis-spec.json

@@ -53,7 +53,7 @@
 			"Grandpa": {
 				"Authorities": [
 					[
-						"5DFNv4Txc4b88qHqQ6GG4D646QcT4fN3jjS2G3r1PyZkfDut",
+						"5FA9nQDVg267DEd8m1ZypXLBnvN7SFxYwV7ndqSYGiN9TTpu",
 						1
 					]
 				]

chain/gssmr/genesis-spec.json

@@ -50,39 +50,39 @@
 			"Grandpa": {
 				"Authorities": [
 					[
-						"5DFNv4Txc4b88qHqQ6GG4D646QcT4fN3jjS2G3r1PyZkfDut",
+						"5FA9nQDVg267DEd8m1ZypXLBnvN7SFxYwV7ndqSYGiN9TTpu",
 						1
 					],
 					[
-						"5FRbF5E5xpBxaCdjuVkCAtoLgvvoL6wJoE7kAVTUdZBwpgi7",
+						"5GoNkf6WdbxCFnPdAnYYQyCjAKPJgLNxXwPjwTh6DGg6gN3E",
 						1
 					],
 					[
-						"5DYo8CvjQcBQFdehVhansDiZCPebpgqvNC8PQPi6K9cL9giT",
+						"5DbKjhNLpqX3zqZdNBc9BGb4fHU1cRBaDhJUskrvkwfraDi6",
 						1
 					],
 					[
-						"5EtkA16QN4DED9vrxb4LnmytCFBhm6qJ5pw6FkoaiRtsPeuG",
+						"5ECTwv6cZ5nJQPk6tWfaTrEk8YH2L7X1VT4EL5Tx2ikfFwb7",
 						1
 					],
 					[
-						"5G64P3LJTK28dDVGNSzSHp4mfZyKqdzxgeZ1cULRoxMdt8m1",
+						"5Ck2miBfCe1JQ4cY3NDsXyBaD6EcsgiVmEFTWwqNSs25XDEq",
 						1
 					],
 					[
-						"5D7QrtMByWQpi8EtqkH1sPDBCVZvoH6G1vY5mknQiCC3ZVQM",
+						"5E2BmpVFzYGd386XRCZ76cDePMB3sfbZp5ZKGUsrG1m6gomN",
 						1
 					],
 					[
-						"5FdsD3mYg5gzh1Uj4FxyeHqMTpaAVd3gDNmcuKypBzRGGMQH",
+						"5CGR8FbjxeV31JKaUUuVUgasW79k8xFGdoh8WG5MokEc78qj",
 						1
 					],
 					[
-						"5DqDws3YxzL8r741gw33jdbohzAESRR9qGCGg6GAZ3Qw5fYX",
+						"5E9ZP1w5qat63KrWEJLkh7aDr2fPTbu3UhetAjxeyBojKHYH",
 						1
 					],
 					[
-						"5FYrfAUUzuahCL2swxoPXc846dKrWuD2nwzrKc1oEfWBS6RL",
+						"5Cjb197EXcHehjxuyKUCF3wJm86owKiuKCzF18DcMhbgMhPX",
 						1
 					]
 				]

lib/crypto/ed25519/ed25519_test.go

@@ -158,5 +158,23 @@ func TestVerifySignature(t *testing.T) {
 			require.NoError(t, err)
 		})
 	}
+}
+
+func TestPublicKeyFromPrivate(t *testing.T) {
+	// subkey inspect //Alice --scheme ed25519
+	priv := common.MustHexToBytes("0xabf8e5bdbe30c65656c0a3cbd181ff8a56294a69dfedd27982aace4a76909115")
+	pub := common.MustHexToBytes("0x88dc3417d5058ec4b4503e0c12ea1a0a89be200fe98922423d4334014fa6b0ee")
+
+	sk, err := NewPrivateKey(append(priv, pub...))
+	require.NoError(t, err)
+	pk, err := sk.Public()
+	require.NoError(t, err)
+	require.Equal(t, pub, pk.(*PublicKey).Encode())
+
+	kp, err := NewKeypairFromSeed(priv)
+	require.NoError(t, err)
+	require.Equal(t, pub, kp.public.Encode())
 
+	addr := crypto.PublicKeyToAddress(kp.Public())
+	require.Equal(t, "5FA9nQDVg267DEd8m1ZypXLBnvN7SFxYwV7ndqSYGiN9TTpu", string(addr))
 }

lib/crypto/keypair.go

@@ -59,16 +59,20 @@ var ss58Prefix = []byte("SS58PRE")
 // also see: https://github.com/paritytech/substrate/blob/master/primitives/core/src/crypto.rs#L275
 func PublicKeyToAddress(pub PublicKey) common.Address {
 	enc := append([]byte{42}, pub.Encode()...)
+	return PublicKeyBytesToAddress(enc)
+}
+
+func PublicKeyBytesToAddress(b []byte) common.Address {
 	hasher, err := blake2b.New(64, nil)
 	if err != nil {
 		return ""
 	}
-	_, err = hasher.Write(append(ss58Prefix, enc...))
+	_, err = hasher.Write(append(ss58Prefix, b...))
 	if err != nil {
 		return ""
 	}
 	checksum := hasher.Sum(nil)
-	return common.Address(base58.Encode(append(enc, checksum[:2]...)))
+	return common.Address(base58.Encode(append(b, checksum[:2]...)))
 }
 
 // PublicAddressToByteArray returns []byte address for given PublicKey Address