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DTSTART;TZID=America/Toronto:20260206T103000
SEQUENCE:0
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/crypto-readi
 ng-group-maggie-simmons-enabling-frodokem
SUMMARY:Crypto Reading Group -Maggie Simmons-Enabling FrodoKEM on Embedded\
 nDevices
CLASS:PUBLIC
DESCRIPTION:Speaker\n Maggie Simmons\n\nAffiliation\n University of Waterlo
 o\n\nLocation\n MC 6029\n\nABSTRACT:  FrodoKEM is a lattice-based Key En
 capsulation Mechanism\n(KEM) based on unstructured lattices. From a securi
 ty point of view\nthis makes it a conservative option to achieve post-quan
 tum security\,\nhence why it is favored over the NIST winners by several E
 uropean\nauthorities (e.g.\, German BSI and French ANSSI). Relying on\nuns
 tructured instead of structured lattices (e.g.\, CRYSTALS-Kyber)\ncomes at
  the cost of additional memory usage\, which is particularly\ncritical for
  embedded security applications such as smart cards. For\nexample\, prior 
 FrodoKEM-640 implementations (using AES) on Cortex-M4\nrequire more than 8
 0 kB of stack making it impossible to run on\nembedded systems. In this wo
 rk\, we explore several stack reduction\nstrategies and the resulting time
  versus memory trade-offs.\nConcretely\, we reduce the stack consumption o
 f FrodoKEM by a factor\n2–3× compared to the smallest known implementat
 ions with almost no\nimpact on performance. We also present various time-m
 emory trade-offs\ngoing as low as 8 kB for all AES parameter sets\, and be
 low 4 kB for\nFrodoKEM-640. By introducing a minor tweak to the FrodoKEM\n
 specifications\, we additionally reduce the stack consumption down to 8\nk
 B for all the SHAKE versions. As a result\, this work enables FrodoKEM\non
  embedded systems.
DTSTAMP:20260406T213843Z
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