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Cryptographic algorithms have varying resource requirements depending on their complexity, intended application, and the specific characteristics of the targeted computing environment. As they are computationally heavy, understanding the impact of energy ...

In this paper, we propose Rocca-S, an authenticated encryption scheme with a 256-bit key and a 256-bit tag targeting 6G applications bootstrapped from AES.Rocca-S achieves an encryption/decryption speed of more than 200 Gbps in the latest software ...

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 ...

At COSADE’2020, Carré et al. established a novel bias-cancelling property of the AES MixColumns matrix that effectively corrects any skewed output distribution of a state byte due to a faulty substitution box. Consequently, any effected byte is ...

GIFT-COFB is a lightweight AEAD scheme and a submission to the ongoing NIST lightweight cryptography standardization process where it currently competes as a finalist. The construction processes 128-bit blocks with a key and nonce of the same size ...

Threshold Implementations have become a popular generic technique to construct circuits resilient against power analysis attacks. In this paper, we look to devise efficient threshold circuits for the lightweight block cipher family SKINNY. The ...

Cryptanalysis of the LowMC block cipher when the attacker has access to a single known plaintext/ciphertext pair is a mathematically challenging problem. This is because the attacker is unable to employ most of the standard techniques in symmetric ...

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 ...

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, ...

In this article, we present WARP, a lightweight 128-bit block cipher with a 128-bit key. It aims at small-footprint circuit in the field of 128-bit block ciphers, possibly for a unified encryption and decryption functionality. The overall ...

The advent of the quantum computer makes current public-key infrastructure insecure. Cryptography community is addressing this problem by designing, efficiently implementing, and evaluating novel public-key algorithms capable of withstanding quantum ...

Recently the ForkAES construction was proposed by Andreeva et al. for efficiently performing authenticated encryption of very short messages on next generation IoT devices. The ForkAES tweakable block cipher uses around one and a half AES ...

At the FSE conference of ToSC 2018, Kranz et al. presented their results on shortest linear programs for the linear layers of several well known block ciphers in literature. Shortest linear programs are essentially the minimum number of 2-input ...

Recently there have been various attempts to construct light weight implementations of the AES-128 encryption and combined encryption/ decryption circuits [2, 13]. However no known lightweight circuit exists for AES-192 and AES-256, the variants ...

Forkciphers are a new kind of primitive proposed recently by Andreeva et al. for efficient encryption and authentication of small messages. They fork the middle state of a cipher and encrypt it twice under two smaller independent permutations. ...

Most of the existing conditional access-based systems (CAS) follow a standard methodology. The service provider shares two copies for single information (specifically image for this work). One copy is a low-resolution version which is shared in the ...

In this paper, we propose a reconfigurable design of the Advanced Encryption Standard capable of adapting at runtime to the requirements of the target application. Reconfiguration is achieved by activating only a specific subset of all the instantiated ...

Spritz is a stream cipher proposed by Rivest and Schuldt at the rump session of CRYPTO 2014. It is intended to be a replacement of the popular RC4 stream cipher. In this paper we propose distinguishing attacks on the full Spritz, based on a short-term ...

In this paper we propose conditional differential cryptanalysis of 105 round Grain v1. This improves the attack proposed on 97 round Grain v1 by Knellwolf et al at Asiacrypt 2010. We take the help of the tool ΔGrain KSA, to track the differential trails ...

Sprout is a lightweight stream cipher proposed by Armknecht and Mikhalev at FSE 2015. It has a Grain-like structure with two state Registers of size 40 bits each, which is exactly half the state size of Grain v1. In spite of this, the cipher does not ...