SM2 operation method, system and device and computer storage medium

• Main Authors: LI XIANQIANG, ZHU BEIFEN, ZENG WEI, WANG PENG, ZHOU HAITAO, LUO YINGLUO
• Format: Patent
• Language: Chinese; English
• Published: 13.09.2019
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses an SM2 operation method, system and device and a computer storage medium. The method comprises the steps of obtaining to-be-operated data; converting the to-be-operated data into n-bit b-system integer data; performing iteration and shift operation on the integer data to obtain an intermediate operation result; judging whether the intermediate operation result is greater than or equal to a preset parameter, if yes, taking a difference value between the intermediate operation result and the preset parameter as a target operation result of the to-be-operated data, and ifnot, taking the intermediate operation result as a target operation result of the to-be-operated data; and performing operation on the to-be-operated data based on the target operation result and theSM2 algorithm. In the SM2 operation method provided by the invention, the integer data is iterated and shifted, so that the number of times of single-precision multiplication operation is reduced, theoperation speed is high, a