A Blockchain-Based Hierarchical Authentication Scheme for Multiserver Architecture

Table 7

Security comparison.

Security requirements	Our scheme	Kou et al.’s scheme [2]	Ying and Nayak’s scheme [36]	Xiong et al.’s scheme [11]	He and Wang’s scheme [4]	Odelu et al.’s scheme [5]
User anonymity	✓	✓	✓	✓	✓	✓
Untraceability	✓	✓	✓	✓	✓	✓
Decentralized registration	✓	✗	✗	✓	✗	✗
No smart card lose attack	✓	✓	✓	✓	✗	✗
Impersonation attack	✓	✓	✓	✓	✓	✓
Replay attack	✓	✓	✓	✓	✓	✓
Man-in-the-middle attack	✓	✓	✓	✓	✗	✓
Hierarchical access control	✓	✓	✗	✗	✗	✗