Cryptographic implementations

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We work on various types of cryptographic implementations for both hardware (ASICs and FPGAs) and software targets (from microcontrollers to high-end multicore processors):

(hyper)-ellipitic curve cryptography (ECC)

• homomorphic encryption (HE)
• post-quantum cryptography (PQC)
• arithmetic for cryptography: operators/units, accelerators, librairies
• protections against physical attacks (observation of side channels, perturbation by fault injection)
• protections against logical attacks
• hash functions
• processor extensions for cryptographic support (symmetric, asymmetric, hash)

Our work on cryptographic implementations also has links to other topics of the ARCAD research group such as computer arithmetic, secure hardware achitectures, reconfigurable architectures, protections against physical attacks

Faculties:

• Karim BIGOU
• Guy GOGNIAT
• Vianney LAPOTRE
• Arnaud TISSERAND

Current and past PhD students:

• Morgane VOLMEUR, 2020-2023, in progress, PEC grant funded by DGA (UBO administrative management), PhD thesis on "Software RNS support for homomorphic encryption on parallel processors"
• Libey DJATH
• Ghita HARCHA
• Timo ZIJLSTRA
• Gabriel GALLIN

Projects:

• 2022 - 2027, PEPR Quantique, PQ-TLS: Post-quantum padlock for web browser
• 2014 - 2017, HAH: Hardware and Arithmetic for Hyperelliptic Curves Cryptography

Our hardware/software developments:

• LWE crypto in HLS on FPGA
  C library for high-level synthesis of lattice based post-quantum cryptography (LWE, RLWE, MLWE) optimized for FPGAs
  Distributed as free software under CeCILL-B license
• Hyper-threaded modular multipliers (HTMMs) generator
  Python and bash scripts for generation of VHDL modular multipliers in GF(P) finite fields and optimized for elliptic and hyper-elliptic curve cryptography
  Distributed as free software under CeCILL-B license