keys: change to []bytes (#4950)

crypto/ed25519/encoding.go

@@ -0,0 +1,18 @@
+package ed25519
+
+import (
+	amino "github.com/tendermint/go-amino"
+	"github.com/tendermint/tendermint/crypto"
+)
+
+var cdc = amino.NewCodec()
+
+func init() {
+	cdc.RegisterInterface((*crypto.PubKey)(nil), nil)
+	cdc.RegisterConcrete(PubKey{},
+		PubKeyAminoName, nil)
+
+	cdc.RegisterInterface((*crypto.PrivKey)(nil), nil)
+	cdc.RegisterConcrete(PrivKey{},
+		PrivKeyAminoName, nil)
+}