개인키 오버플로우 방지 수정

src/main.go

 
 func generateRanUint64() uint64 {
 	rand.Seed(time.Now().UnixNano())
-	return uint64(rand.Uint32())<<32 + uint64(rand.Uint32())
+	//return uint64(rand.Uint32())<<32 + uint64(rand.Uint32())
+	return uint64(0 + uint64(rand.Uint32()))
 }
 
 func main() {