Will you cross the threshold for me? Generic side-channel assisted chosen-ciphertext attacks on NTRU-based KEMs

• Main Authors: Ravi, Prasanna, Ezerman, Martianus Frederic, Bhasin, Shivam, Chattopadhyay, Anupam, Sinha Roy, Sujoy
• 其他作者: School of Physical and Mathematical Sciences
• 格式: Article
• 語言: English
• 出版: 2022
• 主題: Science::Mathematics::Discrete mathematics::Cryptography; Lattice-Based Cryptography; Side-Channel Attack
• 在線閱讀: https://hdl.handle.net/10356/155579
• 機構: Nanyang Technological University

In this work, we propose generic and novel side-channel assisted chosenciphertext attacks on NTRU-based key encapsulation mechanisms (KEMs). These KEMs are IND-CCA secure, that is, they are secure in the chosen-ciphertext model. Our attacks involve the construction of malformed ciphertexts. When dec...