Generalized Multi-Protocol Label Switching(GMPLS) is used as the control protocol for ASON
of which the routing part is mainly governed by the Open Shortest Path First(OSPF) protocol.In this paper
the hidden trouble in the encryption for OSPF protocol is analyzed and the existing encryption schemes improved.A new and safer scheme applicable to the routing technology in ASON is proposed.On the basis of the number-theoretic algorithm
the S-box is dynamically adjusted to prevent differential cryptanalysis.The encryption solution fulfills the confusion and diffusion principle.
关键词
开放式最短路径优先数据加密标准原根分组密码乘法群
Keywords
OSPFData Encryption Standard(DES)primitive rootblock ciphermultiplicative group