3results about How to "Reduce clock cycles" patented technology

The invention provides a Kyber and SM3 fused post quantum cryptography encryption system, method and device. The control logic module controls the execution round number of SM3 in the Hash module according to the random number length required by the NTT module in different modes; the interception unit intercepts the effective length of each round of hash value; the filling unit fills the input message of each round of SM3; the Hash module determines the number of rounds required to be executed by the SM3 according to the lengths of the hash values required by different modes, and intercepts the effective length of each round of hash value; the NTT module is used for calculating polynomial multiplication in the Kyber algorithm; the NTT module comprises a butterfly unit and a control unit, the butterfly unit is used for calculation of modular addition, modular subtraction and modular reduction, and the control unit determines an operation mode of the NTT module; and the sampling module comprises a sampling rejection unit and a central binomial distribution sampling unit, the sampling rejection unit is used for sampling to obtain a public matrix, and the central binomial distribution sampling unit is used for sampling to obtain a noise vector. The scheme meets the safety standard of China and is reliable in safety.

The application provides a high-speed random number generator based on a conservative chaotic system and a generation method thereof. The generated random number is subjected to two commonly used random number test standards, namely, a test suite NIST SP800-22 of The National Institute of Standards and Technology and another test suite TestU01, and experimental test results can prove that the generated random bit sequence passes the randomness test. The throughput of the high-speed random number generator can reach 19 Gbps.

The present application relates to a kind of adaptive adjustment method of quantization precision in HDR imaging process in the field of image sensor and its analog-digital converter.The adaptive adjustment method of quantization precision includes: the analog voltage signal of quantization light intensity size is amplified, and after being compared with multiple sequentially increasing threshold voltages one by one, thermometer code is formed, the most significant bit of thermometer code is set as mode control signal, according to mode control signal 1 or 0, corresponding oversampling rate is selected to carry out ΔΣ quantization to amplified analog voltage signal, form bit stream signal, and be converted into the fine quantization code value corresponding to the bit width of oversampling rate.The present application forms the most significant bit of thermometer code based on the analog voltage signal of quantization light intensity size, and the quantization precision is adaptively adjusted, and corresponding precision quantization is carried out by distinguishing high exposure overexposure pixel and low exposure effective pixel, realizes the dynamic adjustment of quantization bit width and oversampling rate.