A reconciliation approach to key generation based on Module-LWE
January 13, 2020 Β· Declared Dead Β· π IACR Cryptology ePrint Archive
"No code URL or promise found in abstract"
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Authors
Charbel Saliba, Laura Luzzi, Cong Ling
arXiv ID
2001.04280
Category
cs.CR: Cryptography & Security
Cross-listed
cs.IT
Citations
0
Venue
IACR Cryptology ePrint Archive
Last Checked
4 months ago
Abstract
We consider a key encapsulation mechanism (KEM) based on Module-LWE where reconciliation is performed on the 8-dimensional lattice $E_8$, which admits a fast CVP algorithm. Our scheme generates 256 bits of key and requires 3 or 4 bits of reconciliation per dimension. We show that it can outperform Kyber in terms of the modulus q with comparable error probability. We prove that our protocol is IND-CPA secure and improves the security level of Kyber by 7.3%.
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