1 files changed, 6 insertions(+), 0 deletions(-)

M election/msg.go

@@ 243,6 243,12 @@ func (elections *ElectionsMap) onJoinElectionMessage(evt *event.Event) (success 
 	}
 	input := new(big.Int).SetBytes(bytes)
 
+	// zero is not allowed
+	if input.Cmp(new(big.Int)) == 0 {
+		warnf("their input is zero")
+		return
+	}
+
 	bytes, err = base64.StdEncoding.DecodeString(content.PubKey)
 	if err != nil {
 		warnf("we couldn't decode their public key: %s", err)