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Paper 2016/360

Another Look at Tightness II: Practical Issues in Cryptography

Sanjit Chatterjee and Neal Koblitz and Alfred Menezes and Palash Sarkar

Abstract

How to deal with large tightness gaps in security proofs is a vexing issue in cryptography. Even when analyzing protocols that are of practical importance, leading researchers often fail to treat this question with the seriousness that it deserves. We discuss nontightness in connection with complexity leveraging, HMAC, lattice-based cryptography, identity-based encryption, and hybrid encryption.

Note: minor additions, corrections, and clarifications

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Preprint. MINOR revision.
Keywords
tightnesscomplexity leveragingHMAClattice-based cryptographyIBEhybrid encryption
Contact author(s)
koblitz @ uw edu
History
2016-08-25: last of 3 revisions
2016-04-11: received
See all versions
Short URL
https://ia.cr/2016/360
License
Creative Commons Attribution
CC BY
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