关键词: 无线传感器网络, 数据收集, 认证, 密钥协商, 密钥管理

Abstract: This paper proposes a light-weight authentication and key management scheme by using one-way hash function and an efficient symmetric cryptography algorithm, according to the security and efficiency problems of data collection applications in Wireless Sensor Network(WSN). It uses the message authentication code to achieve the integrality for transmitted messages, verifies the correctness of shared session key, and simply calls a random-number generator by using cyclic shift technique to generate different random numbers, thereby improving the computational performance of sensors and saving storage space. Analysis result shows that the calculated amount of this scheme includes (10+tb) hash calculations, six symmetric encryptions/decryptions and three XOR operations, and storage space is 80 bit. Compared with the similar schemes, it is more secure and effective.

Key words: Wireless Sensor Network(WSN), data collection, authentication, key agreement, key management