Research Article
The Lightweight RFID Grouping-Proof Protocols with Identity Authentication and Forward Security
Table 1
The symbols used in our protocols.
| | Symbols | Description |
| | gid | The identifier of a tag group | | , | The current and last round secret key of the tag | | , | The current and last round identifier of the tag | | rk, rid | The secret key and identifier of the trusted reader | | hash() | A secure hash function | | prng() | A pseudorandom number generator | | rv, rr, rti | Some pseudorandom numbers generated by the different entities | | t | The timestamp of the verifier | | d | The bit number of the secret key and the identifier | | ā | Bitwise XOR operation |
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