Cleanup

peer/cipher-data.go

@@ -1,6 +1,7 @@
 package peer
 
 import (
+	"bytes"
 	"crypto/aes"
 	"crypto/cipher"
 	"crypto/rand"
@@ -38,6 +39,10 @@ func (sc *dataCipher) Key() [32]byte {
 	return sc.key
 }
 
+func (sc *dataCipher) HasKey(k [32]byte) bool {
+	return bytes.Equal(k[:], sc.key[:])
+}
+
 func (sc *dataCipher) Encrypt(h Header, data, out []byte) []byte {
 	const s = dataHeaderSize
 	out = out[:s+dataCipherOverhead+len(data)]