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http://hdl.handle.net/10263/7467
Title: | Design and Analysis of Authenticated Encryption Modes |
Authors: | Bhattacharjee, Arghya |
Keywords: | Symmetric Cryptography Block Cipher Public Permutation Authenticated Encryption Coefficients H Technique |
Issue Date: | Sep-2024 |
Publisher: | Indian Statistical Institute, Kolkata |
Citation: | 242p. |
Series/Report no.: | ISI Ph. D Thesis;TH |
Abstract: | 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. |
Description: | This thesis is under the supervision of Prof.Mridul Nandi |
URI: | http://hdl.handle.net/10263/7467 |
Appears in Collections: | Theses |
Files in This Item:
File | Description | Size | Format | |
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thesis_Arghya Bhattacharjee-27-9-24.pdf | Thesis | 2.48 MB | Adobe PDF | View/Open |
Form17-Arghya Bhattacharjee.jpg | Form 17 | 1.44 MB | JPEG | View/Open |
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