Please use this identifier to cite or link to this item: http://hdl.handle.net/10263/7467
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dc.contributor.authorBhattacharjee, Arghya-
dc.date.accessioned2024-09-27T10:38:30Z-
dc.date.available2024-09-27T10:38:30Z-
dc.date.issued2024-09-
dc.identifier.citation242p.en_US
dc.identifier.urihttp://hdl.handle.net/10263/7467-
dc.descriptionThis thesis is under the supervision of Prof.Mridul Nandien_US
dc.description.abstractThis 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.en_US
dc.language.isoenen_US
dc.publisherIndian Statistical Institute, Kolkataen_US
dc.relation.ispartofseriesISI Ph. D Thesis;TH-
dc.subjectSymmetric Cryptographyen_US
dc.subjectBlock Cipheren_US
dc.subjectPublic Permutationen_US
dc.subjectAuthenticated Encryptionen_US
dc.subjectCoefficients H Techniqueen_US
dc.titleDesign and Analysis of Authenticated Encryption Modesen_US
dc.typeThesisen_US
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