Research Article
Authenticated Blind Issuing of Symmetric Keys for Mobile Access Control System without Trusted Parties
| Notation | Meaning |
| | Administrator status | | Super user status | | Normal user status | | Guard system status | | Master grade authentication key | | Visitor grade authentication key | | Entity identity | | Time stamp used for an entity | | Validity time of an entity | | Encryption of message using symmetric key | | Decryption of message using symmetric key | | Hash value of message using hash function and key | | Bit length of message |
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