Design and Analysis of Authenticated Encryption Modes

Author (Researcher Name)

Arghya Bhattacharjee Dr., Indian Statistical Institute

Date of Submission

9-1-2024

Date of Award

11-1-2024

Institute Name (Publisher)

Indian Statistical Institute

Document Type

Doctoral Thesis

Degree Name

Doctor of Philosophy

Subject Name

Computer Science

Department

Applied Statistics Unit (ASU-Kolkata)

Supervisor

Nandi, Mridul (ASU-Kolkata; ISI)

Abstract (Summary of the Work)

This thesis proposes and analyses the security of a few symmetric key modes. The first three of them are NAEAD modes, named Oribatida, ISAP+ and OCB+. Oribatida is lightweight, sponge-based, INT-RUP secure and achieves better than the default PRF security of a keyed sponge. ISAP+ is an instance of a generic EtHM involving a PRF and a hash, a generalisation of ISAP-type modes. The generic sponge hash of ISAP is replaced with a feed-forward variant of it in ISAP+, which results in better security. OCB+ uses OTBC-3 (a nonce-respecting BBB secure offset-based tweakable block-cipher) in an OCB-like mode to achieve BBB privacy. We conclude with a BBB secure NE mode named CENCPP*, which is a public permutation-based variant of the block-cipher-based mode CENC as well as a variable output length version of SoEM. All the relevant security proofs have been done using a method named Coefficients H Technique

Comments

ProQuest Collection ID: https://www.proquest.com/pqdtlocal1010185/dissertations/fromDatabasesLayer?accountid=27563

Control Number

ISILib-TH

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

DSpace Identifier

http://dspace.isical.ac.in:8080/jspui/handle/10263/2146

Recommended Citation

Bhattacharjee, Arghya Dr., "Design and Analysis of Authenticated Encryption Modes" (2024). Doctoral Theses. 471.
https://digitalcommons.isical.ac.in/doctoral-theses/471