基于数据加密的传感器网络信息安全架构设计

Design of security protection architecture for sensor network information based on data encryption

为了实现传感器数据的安全传输,基于椭圆曲线加密算法,设计传感器网络信息安全架构。架构分为传感器层、中段聚合器和顶层聚合器。传感器层完成数据检测、数据加密和数字签字,椭圆曲线倍点运算交由外包服务器进行运算;中段聚合器对发送者、接收者、时间戳和数字签名进行验证,验证通过后,对所辖传感器的数据进行聚合,并完成数字签名,上传顶层聚合器;顶层聚合器对发送者、接收者、时间戳和数字签名进行验证,验证通过后,利用密钥对密文进行解密,得到传感器检测数据。系统测试结果表明,传感器层外包倍点运算可以显著提高运算效率;中段聚合器和顶层聚合器均具有较高运行效率。

In order to achieving data security output of senor,this security architecture was designed based on elliptic curve encryption algorithm.This system included sensors layer,middle level aggregator,and top-level aggregator.Sensors layer achieved data detection,data encryption and digital signature,the elliptic curve point multiplication operation was entrusted to an outsourced server.Middle level aggregator verified sender,receiver,and timestamp and the digital signatures.Middle level aggregator aggregated data from multiple sensors,completed digital signature,and then aggregated data was uploaded to top-level aggregator.Top-level aggregator verified sender,receiver,and timestamp,and then,the digital signatures were aggregated to verify.The ciphertext was decrypted by cipher,sensor detection data was got.The test for system was taken,the result showed that the elliptic curve point multiplication operation was outsourced for sensors layer,could improve computational efficiency,both the middle level and top-level aggregators had high operational efficiency.