FIELD: physics, computer engineering.
SUBSTANCE: invention relates to secure and private backup storage and processing. The method includes receiving, by at least one computing device in a first region of control from at least one computing device in a second region of control, encrypted data formed from encryption of full backup data for a defined data set of the at least one computing device in the second region of control according to at least one search encryption algorithm based on cryptographic key information; receiving, by the at least one computing device in the first region of control from the at least one computing device in the second region of control, encrypted metadata formed from analysis of the full backup data and encryption of an output of the analysis based on the cryptographic key information; receiving trapdoor data enabling visible access to the encrypted data as defined by at least one cryptographic trapdoor of the trapdoor data; and maintaining synthetic full data for the defined data set based on the encrypted data, encrypted metadata and trapdoor data.
EFFECT: safer data storage.
15 cl, 42 dwg
