Table 1 The notations
From: An improved authenticated key agreement protocol for telecare medicine information system
Notations | Description |
|---|---|
U | Patient in TMIS |
S | Telecare server in TMIS |
ID | Patient U’s identity |
PW | Patient U’s password |
s | Telecare server’s secret key |
Q s | Telecare server’s public key, where Q s = sP |
E k /D k | Symmetric encryption/decryption algorithm with key k |
H(·) | Secure one-way collision-resistant hash function |
|| | String concatenation operation |
⊕ | Exclusive OR operation |