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公开(公告)号：US10454680B2
公开(公告)日：2019-10-22
申请号：US15619151
申请日：2017-06-09
Abstract: The present application discloses an RSA decryption processor and a method for controlling an RSA decryption processor. A specific implementation of the processor includes a memory, a control component, and a parallel processor. The memory is configured to store decryption parameters comprising a private key. The control component is configured to receive a ciphertext set, and send a decryption signal comprising the ciphertext set to the parallel processor. The parallel processor is configured to: read a decryption parameter from the memory in response to receiving the decryption signal, and use at least one modular exponentiation circuit unit in the parallel processor to perform in parallel a modular exponentiation operation on ciphertexts in the ciphertext set by using the read decryption parameter, to obtain plaintexts corresponding to the ciphertexts. This implementation improves the efficiency of RSA decryption.
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公开(公告)号：US10922785B2
公开(公告)日：2021-02-16
申请号：US16265566
申请日：2019-02-01
Inventor： Yichen Tu , Jian Ouyang , Wei Qi , Yong Wang
Abstract: A processor and method for scaling an image are disclosed. A specific embodiment of the processor includes: an off-chip memory, a communication circuit, a control circuit, and an array processor, wherein: the off-chip memory is configured for storing a to-be-scaled original image; the communication circuit is configured for receiving an image scaling instruction; the control circuit is configured for executing the image scaling instruction, and sending a calculation control signal to the array processor; and the array processor is configured for calculating in parallel channel values of N channels in a target pixel using N processing elements in the array processor under the control of the calculation control signal based on a width scaling factor, a height scaling factor, and channel values of N channels in extracted pixel data. The embodiment has improved the processing speed of an image scaling operation.
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公开(公告)号：US10951595B2
公开(公告)日：2021-03-16
申请号：US15618655
申请日：2017-06-09
Inventor： Wei Qi , Jian Ouyang , Yong Wang , Yichen Tu , Sijie Yang
Abstract: The present application discloses a method, system and apparatus for storing a website private key plaintext. A specific implementation of the method includes: receiving a public key sent from a terminal configured to perform encryption and decryption, wherein the public key is generated at random by the terminal; encrypting a website private key plaintext by using the public key to generate a website private key ciphertext, wherein the website private key plaintext is pre-acquired; and sending the website private key ciphertext to the terminal, so that the terminal decrypts the website private key ciphertext by using the private key to generate the website private key plaintext and store the website private key plaintext in the terminal. This implementation improves the security of storage of the website private key plaintext.
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公开(公告)号：US20190164254A1
公开(公告)日：2019-05-30
申请号：US16265566
申请日：2019-02-01
Inventor： Yichen Tu , Jian Ouyang , Wei Qi , Yong Wang
Abstract: A processor and method for scaling an image are disclosed. A specific embodiment of the processor includes: an off-chip memory, a communication circuit, a control circuit, and an array processor, wherein: the off-chip memory is configured for storing a to-be-scaled original image; the communication circuit is configured for receiving an image scaling instruction; the control circuit is configured for executing the image scaling instruction, and sending a calculation control signal to the array processor; and the array processor is configured for calculating in parallel channel values of N channels in a target pixel using N processing elements in the array processor under the control of the calculation control signal based on a width scaling factor, a height scaling factor, and channel values of N channels in extracted pixel data. The embodiment has improved the processing speed of an image scaling operation.
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