Design of Parallel Algorithms for Super Long Integer Operation Based on Multi-core CPUs

In cryptographic applications, super long integer operations are often used. However, cryptographic algorithms generally run on a computer with a single-core CPU, and the related computing process is a type of serial execution. In this paper, we investigate how to parallelize the operations of super long integers in multi-core computer environment. The significance of this study lies in that along with the promotion of multi-core computing devices, and the enhancement of multi-core computing ability, we need to make the basic arithmetic of super long integers run in paralleling, which means blocking super long integers, running all data blocks on multi-core threads respectively, converting original serial execution into multi-core parallel computation, and storing multi-thread results after formatting them. According to experiments we have observed: if scheduling thread time is longer than computation, parallel algorithms execute faster, on the contrary, serial algorithms are better. On the whole, parallel algorithms can utilize the computing ability of multi-core hardware more efficiently.