39results about How to "Improve data confidentiality" patented technology

A data storage architecture for networked access by clients includes a file server capable of communication with the clients via the network, physical storage organized as a plurality of logical volumes, and an encryption device in communication with both the file server and the physical storage. The encryption device is operable in response to signaling from the file server to cause encryption of data being moved into the physical storage, and decryption of data being retrieved from storage. Two logical paths are provided for I / O operations. A first path is reserved for use by a first type of requestor, such as file owners. Data retrieved via the first path is decrypted by the encryption device, and Writes via the first path are allowed. A second path is employed for others than the owners, e.g., administrators. Data retrieved via the second path is not decrypted by the encryption device, and attempted Writes via the second first path are denied. Metadata may be delivered in-the-clear via both paths in response to a Read so that legitimate management tasks can be performed.

A data storage architecture for networked access by clients includes a file server capable of communication with the clients via the network, physical storage organized as a plurality of logical volumes, and an encryption device in communication with both the file server and the physical storage.

A system and a method for managing confidential data in a cloud service is provided. The system comprises a cryptographic key service comprising two or more cryptographic key servers, Si, each being arranged to compute file encryption keys, kj, on the basis of information regarding data and using one or more cryptographic keys, Kj. The cryptographic keys, Kj, are secretly shared among the cryptographic key servers, Si, and none of the cryptographic key servers, Si, possesses knowledge of all of the cryptographic keys, Kj. A single point of trust at the cryptographic key service is avoided.

A method is provided for the transmissions of information between at least a first and a second communication means. The method includes in saving at least one set of information in an intermediate element. The method also includes defining a plurality of client groups, using an identifier in order to designate at least one group of clients that are authorized to access the information set, and at least one filtering step, which is intended to prevent a user that does not belong to the group from accessing the information. The method enables the integrity of the contained in the intermediate element to be substantially secured, by selecting clients that are authorized to access the information.

A printing system and a data transmission method thereof are provided. The printing system includes a peripheral unit and a controller. The peripheral unit is configured to execute a data printing function and includes a digital data. The controller is coupled to the peripheral unit. The controller converts a digital control command to obtain an analog control signal, and transmits the analog control signal to the peripheral unit. The peripheral unit converts the analog control signal into the digital control command when the analog control signal is received by the peripheral unit. The peripheral unit converts a corresponding digital data into an analog signal according to the digital control command to transmit the analog signal to the controller.

The invention discloses a whole-sea tidal observation system based on Beidou. The whole-sea tidal observation system comprises a Beidou second-generation satellite navigation and positioning system, a Beidou satellite communication system, a shoreside base station, and a tidal observation data acquisition device positioned on a carrier in ocean; meanwhile, the invention discloses a tidal observation method for the tidal observation system; the tidal observation method comprises the following steps: determining a tide model of a sea area where the shoreside base station is located by the shoreside base station according to latitude and longitude coordinates of the tidal observation data acquisition device, determining a main tidal component type of the sea area where the shoreside base station is located, and carrying out trigonometric polynomial fitting on daylong tidal level data according to the period of the tidal component type to obtain a high-precision daily tide level curve. The whole-sea tidal observation system disclosed by the invention can be applied to any one sea area which can receive an electromagnetic wave signal of a Beidou second-generation satellite; the defect that a conventional tidal observation means only can be operated near shore is overcome, and the working range of marine tide measurement is widened; in addition, the Beidou satellite communication system is adopted for carrying out data transmission, so high data security is realized.