An enhanced security architecture for wireless sensor network

摘要: This paper introduces an enhanced secure sensor network architecture that provides the basic properties of data secrecy, authentication, and replay protection, with Low energy consumption overhead relatively high security level. A novel Pairwise Key based architecture. block cipher mode operation will be employed both secrecy authenticity in only one pass over message data. The Offset Codebook Block (OCB) on Advanced Encryption Standard (AES) encryption employed. An establishment scheme is proposed assures that, even when some number nodes has been compromised, remainder remains fully secure. Only a few bits Initialization Vector (IV) sent, while retaining full-length IV per packet. In contrast, previous approaches require two passes plaintext (one for authentication) transmission IV. support single - source communication multi broad cast communication. Different modes used different key lengths initial vectors settings. More over, text filtered by filter level such as Bloom windowing. Proposed mechanism robust subject to resource constraints energy, memory, computational speed. improvement comes at cost modest increase memory size, which desirable tradeoff nodes. Thus, design tradeoffs model make it well-suited current state-of the- art devices.