Symbol | Definition |
---|---|
Ui | User i |
IDi | User’s identity |
TIDi | Transformed identity of Ui |
PWi | User’s chosen password |
TPWi | Transformed password of Ui |
βi | Biometric information |
RA | Authentication Authority |
CA | Authorization Authority |
SNj | Service node i |
SIDi | Service Identifier |
TSk | Service Type k |
SRUi | Secret key of RA for Ui |
SRC | Common Secret between RA and CA |
SSk | Service Type secret |
h(.) | One-way hash function |
⊕ | An XOR operation |
|| | String concatenation |