Concept
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Publications associées (35)
Secure and Efficient Cryptographic Algorithms in a Quantum World
Since the advent of internet and mass communication, two public-key cryptographic algorithms have shared the monopoly of data encryption and authentication: Diffie-Hellman and RSA. However, in the last few years, progress made in quantum physics -- and mor ...
EPFL2024Complete Practical Side-Channel-Assisted Reverse Engineering of AES-Like Ciphers
Andrea Felice Caforio, Subhadeep Banik, Muhammed Fatih Balli
Public knowledge about the structure of a cryptographic system is a standard assumption in the literature and algorithms are expected to guarantee security in a setting where only the encryption key is kept secret. Nevertheless, undisclosed proprietary cry ...
2021Six shades lighter: a bit-serial implementation of the AES family
Subhadeep Banik, Muhammed Fatih Balli, Sergio Roldán Lombardía
Recently, cryptographic literature has seen new block cipher designs such as PRESENT, GIFT or SKINNY that aim to be more lightweight than the current standard, i.e., AES. Even though AES family of block ciphers were designed two decades ago, they still rem ...
2021Atom: A Stream Cipher with Double Key Filter
Andrea Felice Caforio, Subhadeep Banik, Willi Meier
It has been common knowledge that for a stream cipher to be secure against generic TMD tradeoff attacks, the size of its internal state in bits needs to be at least twice the size of the length of its secret key. In FSE 2015, Armknecht and Mikhalev however ...
2021Energy Analysis of Lightweight AEAD Circuits
Subhadeep Banik, Muhammed Fatih Balli
The selection criteria for NIST's Lightweight Crypto Standardization (LWC) have been slowly shifting towards the lightweight efficiency of designs, given that a large number of candidates already establish their security claims on conservative, well-studie ...
2020Probabilistic small data global Well-Posedness of the energy-critical Maxwell-Klein-Gordon equation
We establish probabilistic small data global well-posedness of the energy-critical Maxwell-Klein-Gordon equation relative to the Coulomb gauge for scaling super-critical random initial data. The proof relies on an induction on frequency procedure and a mod ...
2020Compact Circuits for Combined AES Encryption/Decryption
The implementation of the AES encryption core by Moradi et al. at Eurocrypt 2011 is one of the smallest in terms of gate area. The circuit takes around 2400 gates and operates on an 8 bit datapath. However this is an encryption only core and unable to cate ...
2019