Abstract: A multi-party privacy computing method and device based on semi-trusted hardware, wherein the method applied to semi-trusted hardware comprises the following steps: acquiring random number masks and random seeds of all user terminals; generating a garbled circuit seed according to the random seeds; generating a garbled circuit according to a predetermined circuit description and the garbled circuit seed, wherein the garbled circuit comprises garbled tables, wire labels and decoding information; sending the wire labels corresponding to the inputs of all user terminals to a user terminal corresponding to the semi-trusted hardware by using an oblivious transfer protocol; and sending the garbled table and the decoding information to the user terminal corresponding to the semi-trusted hardware, so that the user terminal can compute an output value according to the garbled tables, the decoding information and the wire label corresponding to the inputs of all user terminals.

Abstract: A method and a device for remote acquisition of correlated pseudo-random numbers based on semi-trusted hardware. When applied to semi-trusted hardware, the method comprises: acquiring a random seed of a sender and a selected number of a receiver; generating a plurality of first correlated pseudo-random numbers and first commitment seeds according to the random seed and a predetermined category of the correlated pseudo-random number; generating a first commitment value and a first open value by a commitment mechanism according to the first correlated pseudo-random numbers and the first commitment seeds; generating a Merkle proof according to the first commitment value and the selected number; sending the first correlated pseudo-random numbers, the first commitment value, the first open value and the Merkle proof corresponding to the selected number to the receiver.

Abstract: A method and a device for remote acquisition of correlated pseudo-random numbers based on semi-trusted hardware. When applied to semi-trusted hardware, the method comprises: acquiring a random seed of a sender and a selected number of a receiver; generating a plurality of first correlated pseudo-random numbers and first commitment seeds according to the random seed and a predetermined category of the correlated pseudo-random number; generating a first commitment value and a first open value by a commitment mechanism according to the first correlated pseudo-random numbers and the first commitment seeds; generating a Merkle proof according to the first commitment value and the selected number; sending the first correlated pseudo-random numbers, the first commitment value, the first open value and the Merkle proof corresponding to the selected number to the receiver.

Abstract: Techniques, systems, devices, and methods are disclosed for establishing a communication session with a peripheral device. In one example, a device includes a memory and processing circuitry configured to store and execute an operating system (OS) and an application for execution on the OS. The application receives an object handle for establishing a wireless connection to a peripheral device. The application determines, based on the object handle, an advertisement cadence for the peripheral device that comprises periods of time wherein the peripheral device is discoverable interleaved with periods of time wherein the peripheral device is non-discoverable. At a time determined based on the advertisement cadence, the application issues, using the object handle, a request that the OS establish the wireless connection to the peripheral device, such that the OS establishes the wireless connection to the peripheral device during one of the periods of time wherein the peripheral device is discoverable.

Abstract: Techniques, systems, devices, and methods are disclosed for establishing a communication session with a peripheral device. In one example, a device includes a memory and processing circuitry configured to store and execute an operating system (OS) and an application for execution on the OS. The application receives an object handle for establishing a wireless connection to a peripheral device. The application determines, based on the object handle, an advertisement cadence for the peripheral device that comprises periods of time wherein the peripheral device is discoverable interleaved with periods of time wherein the peripheral device is non-discoverable. At a time determined based on the advertisement cadence, the application issues, using the object handle, a request that the OS establish the wireless connection to the peripheral device, such that the OS establishes the wireless connection to the peripheral device during one of the periods of time wherein the peripheral device is discoverable.