Method and apparatus for secure management of data

Abstract

A computer implemented method comprising: storing a first set of data items in an encrypted manner, the first set of data items comprising a first data item stored in an encrypted manner using a first final cryptographic key and a second data item stored in an encrypted manner using a second final cryptographic key, wherein the first final cryptographic key is protected through a chain of encryption by a master key and the second final cryptographic key is protected through a chain of encryption by the master key; and storing a second set of one or more data items in an encrypted manner, the second set of one or more data items comprising a third data item stored in an encrypted manner using a third final cryptographic key, wherein the third final cryptographic key is protected through a chain of encryption by master key.

Dependencies are inferred from the claim text.