Encrypted deduplication combines encryption and deduplication in a seamless way to provide confidentiality guarantees for the physical data in deduplication storage, yet it incurs substantial metadata storage overhead due to the additional storage of keys. We present a new encrypted deduplication.storage system called Metadedup, which suppresses metadata storage by also applying deduplication to metadata. Its idea.builds on indirection, which adds another level of metadata chunks that record met
