G06F21/82

Bit decomposition secure computation apparatus, bit combining secure computation apparatus, method and program

The present invention provides a bit decomposition secure computation system comprising: a share value storage apparatus to store share values obtained by applying (2, 3) type RSS using modulo of power of 2 arithmetic; a decomposed share value storage apparatus to store a sequence of share values obtained by applying (2, 3) type RSS using modulo 2 arithmetic; and a bit decomposition secure computation apparatus that, with respect to sharing of a value w, r1, r2, and r3 satisfying w=r1+r2+r3 mod 2{circumflex over ( )}n, where {circumflex over ( )} is a power operator and n is a preset positive integer, being used as share information by the (2, 3) type RSS stored in the share value storage apparatus, includes: an addition sharing unit that sums two values out of r1, r2 and r3 by modulo 2{circumflex over ( )}n, generates and distributes a share value of the (2, 3) type RSS with respect to the sum; and a full adder secure computation unit that executes addition processing of the value generated by the addition sharing unit and a value not used by the addition sharing unit, for each digit, by using secure computation of a full adder, and stores the result in the decomposed share value storage apparatus.

Bit decomposition secure computation apparatus, bit combining secure computation apparatus, method and program

The present invention provides a bit decomposition secure computation system comprising: a share value storage apparatus to store share values obtained by applying (2, 3) type RSS using modulo of power of 2 arithmetic; a decomposed share value storage apparatus to store a sequence of share values obtained by applying (2, 3) type RSS using modulo 2 arithmetic; and a bit decomposition secure computation apparatus that, with respect to sharing of a value w, r1, r2, and r3 satisfying w=r1+r2+r3 mod 2{circumflex over ( )}n, where {circumflex over ( )} is a power operator and n is a preset positive integer, being used as share information by the (2, 3) type RSS stored in the share value storage apparatus, includes: an addition sharing unit that sums two values out of r1, r2 and r3 by modulo 2{circumflex over ( )}n, generates and distributes a share value of the (2, 3) type RSS with respect to the sum; and a full adder secure computation unit that executes addition processing of the value generated by the addition sharing unit and a value not used by the addition sharing unit, for each digit, by using secure computation of a full adder, and stores the result in the decomposed share value storage apparatus.

REMOTE SECURED TERMINAL

A method for providing a secured client computer that includes peripheral components. Each peripheral component processes a corresponding peripheral component data of a data type that is not compatible with peripheral component data types processed by a processor of other peripheral components. The processor of each peripheral component codes the corresponding data of the data type for establishing a secured peer-to-peer communication with other peripheral components.

System, apparatus and method for configurable trusted input/output access from authorized software

In one embodiment, an apparatus includes a channel filter and a security processor. The security processor is to: receive a plurality of device access control policies from a protected non-volatile storage of a platform; determine whether the plurality of device access control policies are verified; program the channel filter with a plurality of filter entries each associated with one of the plurality of device access control policies based on the determination; and remove a security attribute of the security processor from a policy register of the channel filter, to lock the channel filter for a boot cycle of the platform. Other embodiments are described and claimed.

System, apparatus and method for configurable trusted input/output access from authorized software

In one embodiment, an apparatus includes a channel filter and a security processor. The security processor is to: receive a plurality of device access control policies from a protected non-volatile storage of a platform; determine whether the plurality of device access control policies are verified; program the channel filter with a plurality of filter entries each associated with one of the plurality of device access control policies based on the determination; and remove a security attribute of the security processor from a policy register of the channel filter, to lock the channel filter for a boot cycle of the platform. Other embodiments are described and claimed.

SYSTEM AND METHOD FOR SECURELY CONNECTING TO A PERIPHERAL DEVICE
20230110275 · 2023-04-13 ·

A device connectable between a host computer and a computer peripheral over a standard bus interface is disclosed, used to improve security, and to detect and prevent malware operation. Messages passing between the host computer and the computer peripherals are intercepted and analyzed based on pre-configured criteria, and legitimate messages transparently pass through the device, while suspected messages are blocked. The device communicates with the host computer and the computer peripheral using proprietary or industry standard protocol or bus, which may be based on a point-to-point serial communication such as USB or SATA. The messages may be stored in the device for future analysis, and may be blocked based on current or past analysis of the messages. The device may serve as a VPN client and securely communicate with a VPN server using the host Internet connection.

SYSTEM AND METHOD FOR SECURELY CONNECTING TO A PERIPHERAL DEVICE
20230110275 · 2023-04-13 ·

A device connectable between a host computer and a computer peripheral over a standard bus interface is disclosed, used to improve security, and to detect and prevent malware operation. Messages passing between the host computer and the computer peripherals are intercepted and analyzed based on pre-configured criteria, and legitimate messages transparently pass through the device, while suspected messages are blocked. The device communicates with the host computer and the computer peripheral using proprietary or industry standard protocol or bus, which may be based on a point-to-point serial communication such as USB or SATA. The messages may be stored in the device for future analysis, and may be blocked based on current or past analysis of the messages. The device may serve as a VPN client and securely communicate with a VPN server using the host Internet connection.

TECHNOLOGIES FOR ESTABLISHING SECURE CHANNEL BETWEEN I/O SUBSYSTEM AND TRUSTED APPLICATION FOR SECURE I/O DATA TRANSFER
20230071723 · 2023-03-09 · ·

Technologies for secure I/O data transfer includes a compute device, which includes a processor to execute a trusted application, an input/output (I/O) device, and an I/O subsystem. The I/O subsystem is configured to establish a secured channel between the I/O subsystem and a trusted application running on the compute device, and receive, in response to an establishment of the secured channel, I/O data from the I/O device via an unsecured channel. The I/O subsystem is further configured to encrypt, in response to a receipt of the I/O data, the I/O data using a security key associated with the trusted application that is to process the I/O data and transmit the encrypted I/O data to the trusted application via the secured channel, wherein the secured channel has a data transfer rate that is higher than a data transfer rate of the unsecured channel between the I/O device and the I/O subsystem.

Extending supervisory services into trusted cloud operator domains

A supervisory service of a node that includes a smart input/output (I/O) peripheral is extended into a cloud operator domain that is associated with the smart I/O peripheral. The supervisory service determines a state of a ready state indicator that is provided by the smart I/O peripheral. Based on the state, the supervisory service performs at least one of regulating an availability of an instance of an application operating environment of the node or determining whether the smart I/O peripheral is ready to be configured by the supervisory service.

Extending supervisory services into trusted cloud operator domains

A supervisory service of a node that includes a smart input/output (I/O) peripheral is extended into a cloud operator domain that is associated with the smart I/O peripheral. The supervisory service determines a state of a ready state indicator that is provided by the smart I/O peripheral. Based on the state, the supervisory service performs at least one of regulating an availability of an instance of an application operating environment of the node or determining whether the smart I/O peripheral is ready to be configured by the supervisory service.