|
| Symbol | Definition |
|
| Identities of users and , respectively |
| Identity of the authentication server |
| The large primes and , a generator of group with the order |
| The long-term key of , and |
| Components of authentication information and |
| Random number privately chosen by and , respectively |
| Components of session key, where and |
| Collision-free one-way hash function |
| Evidence generated by user for user |
|