CRYSTALS Kyber core for accelerating NIST FIPS 203 Key Encapsulation Mechanism

eSi-Kyber is a hardware accelerator core designed to accelerate post-quantum Key Encapsulation Mechanism (KEM) as defined by NIST FIPS 203.

Kyber, an integral part of the Cryptographic Suite for Algebraic Lattices (CRYSTALS), is an IND-CCA2-secure key encapsulation mechanism known as ML-KEM. Its security is derived from the complexity of solving the learning-with-errors (LWE) problem over module lattices.

CRYSTALS encompasses two cryptographic primitives: Kyber, a secure KEM, and Dilithium, a strongly EUF-CMA-secure digital signature algorithm.

• The core supports all operations defined in the FIPS 203 standard :
  • ML-KEM.KeyGen
  • ML-KEM.Encaps
  • ML-KEM.Decaps
• This core supports all security levels defined in the FIPS 203 standard :
  • ML-KEM-512
  • ML-KEM-768
  • ML-KEM-1024
• Operation times ~10us for ML-KEM-1024 at 1GHz
• Includes optional external interface to access the internal SHA3/SHAKE function, fully supporting FIPS 202 standard
• Configurable arithmetic unit architecture for achieving the required performance and silicon area
• Constant time operations for resistance against time analysis attacks
• Simple generic control/data interface for controlling the core and loading input and unloading output data sets.
• ASIC or FPGA target

• Automotive
• Datacentres
• Networking
• Space
• Military
• Industrial IoT
• Medical
• Telecommunications
• Banking
• Government

• System Verilog RTL
• Testbench
• C Model
• Software libraries