Beijing Smartchip Microelectronics Technology Comp

Dongyan Zhao

Xiaoke Tang

Liang Liu

Dejian Li

Zhe Zhang

Haifeng Zhang

Yi Hu

Xiaobo Hu

Jie Gan

Jiali Hou

Yanyan Yu

Shiping Zang

Yinzi Tu

Xiaoman Wang

Lixin Yang

Yidong Yuan

Lang Tan

Yongwang Ma

Disclosed are an elliptic curve point multiplication operation method and apparatus. The elliptic curve point multiplication operation method comprises ordered point multiplication and point addition operations. In a point addition operation process, when scanning that a current bit of a scalar K is not 0, a true point addition operation is executed, and when scanning that the current bit of the scalar K is 0, an equivalent point conversion operation is executed; the result of the true point addition operation and the result of the equivalent point conversion operation are stored in an identical register file, the register file comprising multiple registers. According to the elliptic curve point multiplication operation method and apparatus, side channel analysis and security error attack can be effectively resisted.

Elliptic curve point multiplication operation method and apparatus

An ultra-low power consumption power supply structure, comprising: a first LDO circuit, a second LDO circuit, a first Bandgap module, a second Bandgap module and a switching circuit, wherein the first LDO circuit is used for providing an LDO output voltage when an SOC chip is in a normal operating mode, and the second LDO circuit is used for providing an LDO output voltage when the SOC chip is in an ultra-low power consumption mode; the first Bandgap module is used for providing, based on a main power supply voltage, a first reference voltage for the first LDO circuit at the time of power-on startup, and the second Bandgap module is used for providing a second reference voltage for the second LDO circuit after power-on startup is completed; and the switching circuit is used for switching the mode in which the first reference voltage is output by the first Bandgap module at the time of power-on startup to the mode in which the second reference voltage is output by the second Bandgap module after power-on startup is completed.

Ultra-low power consumption power supply structure

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Beijing, China

Dongyan Zhao