Key negotiation method and apparatus based on SM2 key exchange protocol

摘要

The present invention relates to information technology field, a key negotiation method and based on the SM2 key exchange protocol Of minimal based on a positive integer value, and calculates the parameters W, and is to negotiate counterpart and key negotiation on the basis of the parameter W. Compared to the method of calculating the parameter W by using a mode that is rounded up by using log2 (n) logarithmic value, the calculation amount effectively reduces, and reduce the implementation complexity of the algorithm, thereby SM2 key exchange protocol implementation efficiency of the key negotiation process based on is greatly improved, and further optimizing the engineering implementation of SM2 key exchange protocol.