5 papers
Exploiting Load/Store Leakage of Sparse Vectors for Key Recovery in HQC
Gustavo Banegas, Benjamin Smith, Jad Zahreddine
Hamming Quasi-Cyclic (HQC) is a code-based key encapsulation mechanism selected by NIST for standardization, making its resistance to implementation attacks critically important. W…
Low-Stack HAETAE for Memory-Constrained Microcontrollers
Gustavo Banegas, Kim Youngbeom, Seo Seog Chung +1
We present a low-stack implementation of the module-lattice signature scheme HAETAE, targeting microcontrollers with 8 kB-16 kB of available SRAM. On such devices, peak stack usage…
A Fault Analysis on SNOVA
Gustavo Banegas, Ricardo Villanueva-Polanco
SNOVA is a post-quantum cryptographic signature scheme known for its efficiency and compact key sizes, making it a second-round candidate in the NIST post-quantum cryptography stan…
Hardened CTIDH: Dummy-Free and Deterministic CTIDH
Gustavo Banegas, Andreas Hellenbrand, Matheus Saldanha
Isogeny-based cryptography has emerged as a promising postquantum alternative, with CSIDH and its constant-time variants CTIDH and dCTIDH offering efficient group-action protocols.…
Compressed verification for post-quantum signatures with long-term public keys
Gustavo Banegas, Anaëlle Le Dévéhat, Benjamin Smith
Many signature applications-such as root certificates, secure software updates, and authentication protocols-involve long-lived public keys that are transferred or installed once a…