Ritam Bhaumik

According to our database, Ritam Bhaumik authored at least 32 papers between 2015 and 2025.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of three.

2025

A Note on Feedback-PRF Mode of KDF from NIST SP 800-108.

Ritam Bhaumik, Avijit Dutta, Tetsu Iwata, Ashwin Jha, Kazuhiko Minematsu, Mridul Nandi, Yu Sasaki, Meltem Sönmez Turan, Stefano Tessaro

IACR Cryptol. ePrint Arch., 2025

Pencil: A Domain-Extended PRF with Full n-bit Security \\ for Strengthening GCM and More.

Ritam Bhaumik, Jean Paul Degabriele

IACR Cryptol. ePrint Arch., 2025

Post-quantum Security of Key-Alternating Feistel Ciphers.

Jyotirmoy Basak, Ritam Bhaumik, Amit Kumar Chauhan, Ravindra Jejurikar, Ashwin Jha, Anandarup Roy, André Schrottenloher, Suprita Talnikar

IACR Cryptol. ePrint Arch., 2025

Cryptographic Treatment of Key Control Security - In Light of NIST SP 800-108.

Ritam Bhaumik, Avijit Dutta, Akiko Inoue, Tetsu Iwata, Ashwin Jha, Kazuhiko Minematsu, Mridul Nandi, Yu Sasaki, Meltem Sönmez Turan, Stefano Tessaro

Proceedings of the Advances in Cryptology - CRYPTO 2025, 2025

2024

BBB security for 5-round even-Mansour-based key-alternating Feistel ciphers.

Arghya Bhattacharjee, Ritam Bhaumik, Avijit Dutta, Mridul Nandi, Anik Raychaudhuri

Des. Codes Cryptogr., January, 2024

BBB Secure Arbitrary Length Tweak TBC from n-bit Block Ciphers.

Arghya Bhattacharjee, Ritam Bhaumik, Nilanjan Datta, Avijit Dutta, Sougata Mandal

IACR Cryptol. ePrint Arch., 2024

Universal Context Commitment without Ciphertext Expansion.

Arghya Bhattacharjee, Ritam Bhaumik, Chandranan Dhar

IACR Cryptol. ePrint Arch., 2024

Building a BBB Pseudorandom Permutation using Lai-Massey Networks.

Ritam Bhaumik, Mohammad Amin Raeisi

IACR Commun. Cryptol., 2024

Block Cipher Doubling for a Post-Quantum World.

Ritam Bhaumik, André Chailloux, Paul Frixons, Bart Mennink, María Naya-Plasencia

IACR Commun. Cryptol., 2024

Indifferentiability of 3-Round Confusion-Diffusion Networks.

Ritam Bhaumik, Mridul Nandi, Sayantan Paul, Abishanka Saha

Proceedings of the Security and Cryptography for Networks - 14th International Conference, 2024

Provably Secure Online Authenticated Encryption and Bidirectional Online Channels.

Arghya Bhattacharjee, Ritam Bhaumik, Daniel Collins, Mridul Nandi

Proceedings of the Selected Areas in Cryptography - SAC 2024, 2024

Efficient Variants of TNT with BBB Security.

Ritam Bhaumik, Wonseok Choi, Avijit Dutta, Cuauhtemoc Mancillas López, Hrithik Nandi, Yaobin Shen

Proceedings of the Provable and Practical Security, 2024

The Committing Security of MACs with Applications to Generic Composition.

Ritam Bhaumik, Bishwajit Chakraborty, Wonseok Choi, Avijit Dutta, Jérôme Govinden, Yaobin Shen

Proceedings of the Advances in Cryptology - CRYPTO 2024, 2024

Mind the Bad Norms - Revisiting Compressed Oracle-Based Quantum Indistinguishability Proofs.

Ritam Bhaumik, Benoît Cogliati, Jordan Ethan, Ashwin Jha

Proceedings of the Advances in Cryptology - ASIACRYPT 2024, 2024

2023

BBB PRP Security of the Lai-Massey Mode.

Ritam Bhaumik, Mohammad Amin Raeisi

IACR Cryptol. ePrint Arch., 2023

sfPAE: Towards More Efficient and BBB-secure AE From a Single Public Permutation.

Arghya Bhattacharjee, Ritam Bhaumik, Avijit Dutta, Eik List

IACR Cryptol. ePrint Arch., 2023

PAE: Towards More Efficient and BBB-Secure AE from a Single Public Permutation.

Arghya Bhattacharjee, Ritam Bhaumik, Avijit Dutta, Eik List

Proceedings of the Information and Communications Security - 25th International Conference, 2023

Revisiting the Indifferentiability of the Sum of Permutations.

Aldo Gunsing, Ritam Bhaumik, Ashwin Jha, Bart Mennink, Yaobin Shen

Proceedings of the Advances in Cryptology - CRYPTO 2023, 2023

On Quantum Secure Compressing Pseudorandom Functions.

Ritam Bhaumik, Benoît Cogliati, Jordan Ethan, Ashwin Jha

Proceedings of the Advances in Cryptology - ASIACRYPT 2023, 2023

2022

Safely Doubling your Block Ciphers for a Post-Quantum World.

Ritam Bhaumik, André Chailloux, Paul Frixons, María Naya-Plasencia

IACR Cryptol. ePrint Arch., 2022

A Sponge-Based PRF with Good Multi-user Security.

Arghya Bhattacharjee, Ritam Bhaumik, Mridul Nandi

Proceedings of the Selected Areas in Cryptography - 29th International Conference, 2022

Offset-Based BBB-Secure Tweakable Block-ciphers with Updatable Caches.

Arghya Bhattacharjee, Ritam Bhaumik, Mridul Nandi

Proceedings of the Progress in Cryptology - INDOCRYPT 2022, 2022

2021

Improved indifferentiability security proof for 3-round tweakable Luby-Rackoff.

Ritam Bhaumik, Mridul Nandi, Anik Raychaudhuri

Des. Codes Cryptogr., 2021

QCB: Efficient Quantum-Secure Authenticated Encryption.

Ritam Bhaumik, Xavier Bonnetain, André Chailloux, Gaëtan Leurent, María Naya-Plasencia, André Schrottenloher, Yannick Seurin

Proceedings of the Advances in Cryptology - ASIACRYPT 2021, 2021

2018

ZCZ - Achieving n-bit SPRP Security with a Minimal Number of Tweakable-Block-Cipher Calls.

Ritam Bhaumik, Eik List, Mridul Nandi

Proceedings of the Advances in Cryptology - ASIACRYPT 2018, 2018

2017

Turning Online Ciphers Off.

Elena Andreeva, Guy Barwell, Ritam Bhaumik, Mridul Nandi, Dan Page, Martijn Stam

IACR Trans. Symmetric Cryptol., 2017

Improved Security for OCB3.

Ritam Bhaumik, Mridul Nandi

Proceedings of the Advances in Cryptology - ASIACRYPT 2017, 2017

The Iterated Random Function Problem.

Ritam Bhaumik, Nilanjan Datta, Avijit Dutta, Nicky Mouha, Mridul Nandi

Proceedings of the Advances in Cryptology - ASIACRYPT 2017, 2017

2016

OleF: an Inverse-Free Online Cipher. An Online SPRP with an Optimal Inverse-Free Construction.

Ritam Bhaumik, Mridul Nandi

IACR Trans. Symmetric Cryptol., 2016

OleF: An Inverse-Free Online Cipher.

Ritam Bhaumik, Mridul Nandi

IACR Cryptol. ePrint Arch., 2016

2015

Revisiting Turning Online Cipher Off.

Ritam Bhaumik, Mridul Nandi

IACR Cryptol. ePrint Arch., 2015

An Inverse-Free Single-Keyed Tweakable Enciphering Scheme.

Ritam Bhaumik, Mridul Nandi

Proceedings of the Advances in Cryptology - ASIACRYPT 2015 - 21st International Conference on the Theory and Application of Cryptology and Information Security, Auckland, New Zealand, November 29, 2015