Research Article
A Secure Three-Factor Multiserver Authentication Protocol against the Honest-But-Curious Servers
Table 2
Notations in the new protocol.
| | th user and th server |
| | the registration centre |
| | ’s identity, dynamic identity and ’s identity |
| | ’s smart card, password and biometrics |
| | valid biometric characteristic extracted from |
| | master secret key between server and registration centre |
| | master secret key between user and registration centre |
| | hash function, XOR operation and concatenating operation |
| | pre-shared key between and registration centre |
| | pre-shared key between and registration centre |
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