• post-quantum cryptography
• rlwe cryptography
• attribute-based encryption
• performance evaluation
• over-the-air programming
• smart industry
• mqtt

Attribute-Based Encryption (ABE) is an encryption paradigm that embeds access control functionalities within ciphertexts. It has shown to be useful for protecting intellectual property in Firmware-Over-The-Air (FOTA) systems, especially when confidential software updates are temporarily stored in untrusted cloud or edge servers, and also for data protection in automotive and smart industry scenarios.
However, current ABE ciphers are generally based on pairing mathematics, which is broken if attacked by large-scale quantum computers. Thus, intellectual property and data protected by these ciphers will not be safe anymore in the future.
In this thesis, we focus on two lattice-based ABE ciphers (namely the scheme proposed by Gur et al. in 2019 and the one proposed by Dai et al. in 2017), which are believed to be resistant to quantum attacks, so they are candidates replacement of pairing-based ABE schemes in the future quantum world. Specifically, we measure their encryption and decryption performance in terms of processing time and memory with reference to automotive and smart industry applications.