byte[] cst = { (byte) (usage >> 24 & 0xFF), (byte) (usage >> 16 & 0xFF), (byte) (usage >> 8 & 0xFF), (byte) (usage & 0xFF),
                (byte) 0x99 };

        byte[] output = new byte[12];
        byte[] dk = deriveKeyAES(baseKey, cst); // Checksum key
        try {
            Mac m = Mac.getInstance("HmacSHA1");

	BucketStatuses                map[string]ResyncStatusType `json:"buckets" msg:"bkts"`
	TotBuckets                    int                         `json:"totbuckets" msg:"tb"`
	TargetReplicationResyncStatus `json:"currSt" msg:"cst"`
}

func (s *SiteResyncStatus) clone() SiteResyncStatus {
	if s == nil {
		return SiteResyncStatus{}
	}
	o := *s
	o.BucketStatuses = make(map[string]ResyncStatusType, len(s.BucketStatuses))