Chen, Y.
, Davidson, M.
, Dworkin, M.
, Kelsey, J.
, Sasaki, Y.
, Sonmez Turan, M.
, Thompson, A.
, Mouha, N.
and Chang, D.
(2025),
Requirements for Cryptographic Accordions, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.8552, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=959841
(Accessed April 13, 2025)
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Requirements for Cryptographic Accordions
Published
Author(s)
, , , , , , Alyssa Thompson, Nicky Mouha, Donghoon Chang
Abstract
This report introduces the cryptographic accordion as a tweakable, variable-input-length strong pseudorandom permutation (VIL-SPRP) that is constructed from an underlying block cipher. An accordion facilitates the cryptographic processing of messages of various sizes while offering enhanced security compared to the approved block cipher modes of operation that are specified in the NIST SP 800-38 series. This report introduces associated terminology, outlines design requirements for accordions, and describes three categories of applications for them.Citation
NIST Interagency/Internal Report (NISTIR) - 8552
Report Number
8552
NIST Pub Series
Pub Type
NIST Pubs
Download Paper
Keywords
accordion, authenticated encryption, disk encryption, encode-then-encipher, key wrapping, length-preserving encryption
Citation
Issues
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Created April 11, 2025