In this assignment, your task is to design a next generation of smart lock system called DigiLock using cryptographic primitives

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Question: Protocol Design and Analysis

DigiLock – A new very smart lock

In this assignment, your task is to design a next generation of smart lock system called DigiLock using cryptographic primitives and protocols introduced in the lecture (symmetric block ciphers (DES, 3DES, AES), asymmetric ciphers (RSA, ECC), digital signatures and hashing). Each DigiLock device communicates over a wireless point-to-point channel with other locks in its radio environment (e.g., within a building). The DigiLock system supports programming of various access control policies. For example, DigiLock1 could be set up to unlock only if DigiLock2 and DigiLock3 are locked.

Programming of DigiLocks, firmware updates, and installation of new software on DigiLocks is done by using a special device called DigiLock Programming Device (DPD) which uses wireless connectivity to communicate with DigiLocks. Only authorized users can install software on DigiLocks using DPD; user authorisation to DPD is based on a passwords [Note: you can assume that the authorized users have already set up the password on DPD]

 

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