Data sharing scheme for wearable device based on blockchain and aggregate signature
Wearable devices can collect and share data to provide assistance for health monitoring,medical research,etc.The blockchain is decentralized and tamper-proof,which ensures the security of shared data in storage;however,potential attackers may still tamper with forged data during data transmission.To address the above problems,an interplanetary file system(IPFS)combined with blockchain architecture was proposed to enhance blockchain efficiency and solve the problem of insufficient storage space.An elliptic curve-based pairing-free certificateless aggregate signature scheme was designed to sign the data before it was uploaded to the chain,which realized efficient and secure data transmission.The security analysis proves that the proposed signature scheme can prevent most attacks,and the performance analysis shows that the scheme has lower computation and communication overhead compared with the existing schemes.
万方数据
维普
