Abstract: Provided is a surrogate modeling method for shale oil fractured system simulation based on trajectory piecewise-linearization, which relates to the technical field of unconventional oil and gas development and includes: establishing a numerical simulation model of a shale oil reservoir fractured system, and solving the numerical simulation model to obtain solution data of a matrix and a fracture of an original model; constructing base functions of matrix and fracture solutions by a sampling matrix; finding a saved solution closest to field data of a current time step in a training trajectory; obtaining a linear equation set for ascertaining field data of next time step, and performing projection and order reducing solving; and verifying whether field data of a new time step is reasonable until a set production time is reached. A resulting surrogate model can rapidly simulate slightly compressible flow in a fractured porous medium.

Abstract: Provided is a simulation method and system of joint exploitation of natural gas hydrate, shallow gas and deep-seated gas. The method includes: constructing a simulation model of joint exploitation of a shallow gas layer and a hydrate layer, including setting and meshing the shallow gas layer and the hydrate layer, constructing the simulation model of joint exploitation by setting a formation parameter and a production parameter, and solving the model to acquire productivity data; constructing a simulation model of joint exploitation of the shallow gas layer, the deep-seated gas layer and the hydrate layer, including setting and meshing the shallow gas layer, the deep-seated gas layer and the hydrate layer, constructing a simulation model of joint exploitation of the shallow gas layer, the deep-seated gas layer and the hydrate layer by setting the formation parameter and the production parameter, and solving the model to acquire productivity data.

Abstract: A data input method and apparatus, and user equipment are provided. The method includes: when it is determined that an operation of a user on the user equipment UE is not performed in a preset display area, deliver an event corresponding to the operation to a first operating environment for processing, where the preset display area runs in a second operating environment of the UE, and the second operating environment has a higher security level than the first operating environment. This can better improve security of an event generated when the user operates a program that runs in a Normal World of the user equipment, and can directly operate an event that runs in the Normal World.

Abstract: An apparatus including a processor and a memory, where the processor and the memory are configured to provide a secure execution environment and the memory stores a hardware unique key and a class key. The processor is configured to recover, in the secure execution environment, a certificate signing key based on the class key, where the certificate signing key is associated with a certificate authority. The processor is further configured to derive a device key pair based on the hardware unique key, where the device key pair includes a device public key and a device private key, and generate a device certificate based on the device public key and the certificate signing key. The generated device certificate is configured to be validated based on a public key associated with the certificate authority.

Abstract: A data input method and apparatus, and user equipment are provided. The method includes: when it is determined that an operation of a user on the user equipment UE is not performed in a preset display area, deliver an event corresponding to the operation to a first operating environment for processing, where the preset display area runs in a second operating environment of the UE, and the second operating environment has a higher security level than the first operating environment. This can better improve security of an event generated when the user operates a program that runs in a Normal World of the user equipment, and can directly operate an event that runs in the Normal World.

Abstract: A data input method and apparatus, and user equipment are provided. The method includes: when it is determined that an operation of a user on the user equipment UE is not performed in a preset display area, deliver an event corresponding to the operation to a first operating environment for processing, where the preset display area runs in a second operating environment of the UE, and the second operating environment has a higher security level than the first operating environment. This can better improve security of an event generated when the user operates a program that runs in a Normal World of the user equipment, and can directly operate an event that runs in the Normal World.

Abstract: A system generating a prime number comprising a prime number generator (PNG) module and a pseudorandom number generator (PRNG) module which is configured to: initialise the pseudorandom number generator (PRNG) module; receive a request from the PNG module, the request containing a bit length of the pseudorandom number required; generate the required bit length of pseudorandom number; transmit a response containing the generated bit length of pseudorandom numbers to the PNG module. The PNG module is configured to: transmit the request containing the bit length of the pseudorandom numbers required; receive the response from the PRNG module; assign the pseudorandom numbers in the response to form raw data PPP; set a least significant bit (LSB) and most significant bit (MSB) of PPP as 1 to obtain a first big odd number denoted as PP; and execute an algorithm to determine a first big prime number starting from odd number PP.

Abstract: An apparatus including a processor and a memory, where the processor and the memory are configured to provide a secure execution environment and the memory stores a hardware unique key and a class key. The processor is configured to recover, in the secure execution environment, a certificate signing key based on the class key, where the certificate signing key is associated with a certificate authority. The processor is further configured to derive a device key pair based on the hardware unique key, where the device key pair includes a device public key and a device private key, and generate a device certificate based on the device public key and the certificate signing key. The generated device certificate is configured to be validated based on a public key associated with the certificate authority.

Abstract: A data input method and apparatus, and user equipment are provided. The method includes: when it is determined that an operation of a user on the user equipment UE is not performed in a preset display area, deliver an event corresponding to the operation to a first operating environment for processing, where the preset display area runs in a second operating environment of the UE, and the second operating environment has a higher security level than the first operating environment. This can better improve security of an event generated when the user operates a program that runs in a Normal World of the user equipment, and can directly operate an event that runs in the Normal World.