Cryptographie appliquée à la sécurité des systèmes d’information
Marc Beunardeau · HAL (Le Centre pour la Communication Scientifique Directe) · 2019
This thesis, on the border between information security and cryptography, focuses on the use of information security in computer security. This thesis is divided into three scientifically independent parts, which share the same property of solving problems that are or will be faced by the digital industries. We study the batch processing of signatures, in order to respond to the future omnipresence of devices with low computing power being connected to open networks; and therefore having to authenticate a large number of messages. We then focus on the post-quantum threat, examining a new challenging problem involving low-weight Hamming number ratios. Finally, we look at the physical security of symmetric algorithm and quantum key exchange, the former being a long-standing challenge, and the other a possibility for future cryptographic key distribution free from the classic problems of cryptography