Concept
Substitution cipher
Related publications (73)
Near Collision Attack Against Grain V1
Daniel Patrick Collins, Subhadeep Banik, Willi Meier
A near collision attack against the Grain v1 stream cipher was proposed by Zhang et al. in Eurocrypt 18. The attack uses the fact that two internal states of the stream cipher with very low hamming distance between them, produce similar keystream sequences ...
2023Green Cryptography and Other Optimisations
The spectral decomposition of cryptography into its life-giving components yields an interlaced network oftangential and orthogonal disciplines that are nonetheless invariably grounded by the same denominator: theirimplementation on commodity computing pla ...
EPFL2023The Role of Compromised Accounts in Social Media Manipulation
In recent years we have seen a marked increase in disinformation including as part of a strategy of so-called hybrid warfare. Adversaries not only directly spread misleading content but manipulate social media by employing sophisticated techniques that exp ...
EPFL2022Atom: 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 ...
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 ...
2021Melting SNOW-V: Improved Lightweight Architectures
Andrea Felice Caforio, Subhadeep Banik, Muhammed Fatih Balli
SNOW-V is a stream cipher proposed by Ekdahl et al. at IACR ToSC 2019(3) with an objective to be deployed as the encryption primitive in 5G systems. The stream cipher offers 256-bit security and is ready for deployment in the post-quantum era, in which as ...
2020Melting SNOW-V: improved lightweight architectures
Andrea Felice Caforio, Subhadeep Banik, Muhammed Fatih Balli
SNOW-V is a stream cipher proposed by Ekdahl et al. at IACR ToSC 2019(3) with an objective to be deployed as the encryption primitive in 5G systems. The stream cipher offers 256-bit security and is ready for deployment in the post-quantum era, in which as ...
2020Cryptanalysis of LowMC instances using single plaintext/ciphertext pair
Serge Vaudenay, Subhadeep Banik, Fatma Betül Durak, Khashayar Barooti
Arguably one of the main applications of the LowMC family ciphers is in the post-quantum signature scheme PICNIC. Although LowMC family ciphers have been studied from a cryptanalytic point of view before, none of these studies were directly concerned with ...
RUHR-UNIV BOCHUM, HORST GORTZ INST IT-SICHERHEIT2020An Operational Approach to Information Leakage
Given two random variables X and Y , an operational approach is undertaken to quantify the "leakage" of information from X to Y . The resulting measure L (X -> Y) is called maximal leakage, and is defined as the multiplicative increase, upon observing Y , ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020The Area-Latency Symbiosis: Towards Improved Serial Encryption Circuits
Andrea Felice Caforio, Subhadeep Banik, Muhammed Fatih Balli
The bit-sliding paper of Jean et al. (CHES 2017) showed that the smallest-size circuit for SPN based block ciphers such as AES, SKINNY and PRESENT can be achieved via bit-serial implementations. Their technique decreases the bit size of the datapath and na ...
2020