HQC

Information

Authors

• Carlos Aguilar Melchor, University of Toulouse (FR)
• Nicolas Aragon, University of Limoges & DGA (FR)
• Slim Bettaieb, Worldline (FR)
• Loïc Bidoux, Worldline (FR)
• Olivier Blazy, University of Limoges (FR)
• Jean-Christophe Deneuville, INSA-CVL & University of Limoges (FR)
• Philippe Gaborit, University of Limoges (FR)
• Edoardo Persichetti, Florida Atlantic University (US)
• Gilles Zémor, University of Bordeaux (FR)

Official Links

• Official Website

Related Articles

A Practicable Timing Attack Against HQC and its Countermeasure
Guillaume Wafo-Tapa and Slim Bettaieb and Loic Bidoux and Philippe Gaborit and Etienne Marcatel.
Cryptology ePrint Archive: Report 2019/909, Sep 2019.

Summary Table

Hamming Quasi-Cyclic (HQC)
	ROUND 1	ROUND 2
Description	code QC Random Codes - No Decoding
Assumption	Decision QC-SDP
Functionality	KEM
Public Key (bytes)	level 1: 2819 level 3: 5115 level 5: 7417	level 1: 6170 level 3: 10918 level 5: 15898
Secret Key (bytes)	level 1: 40 level 3: 40 level 5: 40	level 1: 252 level 3: 404 level 5: 532
CIPH/SIG (bytes)	level 1: 5622 level 3: 10214 level 5: 14818	level 1: 6234 level 3: 10981 level 5: 15960
Security Type	IND-CCA (HHK)