Results 1 to 10 of about 38 (26)

Revisiting the Security of the Lightweight Stream Cipher Draco: New Observation and TMDTO Attacks

IET Information Security
Draco is a lightweight small-state stream cipher proposed in 2022. It is designed to provide a 128-bit security level and be provably secure against time-memory-data trade-off (TMDTO) attacks. In this paper, we revisit the security of Draco against TMDTO
Ziyu Guan, Lin Ding, Zhengting Li, Xinhai Wang, Jie Guan   +4 more
doaj   +3 more sources

The DRACO Stream Cipher

IACR Transactions on Symmetric Cryptology, 2022
Stream ciphers are vulnerable to generic time-memory-data tradeoff attacks. These attacks reduce the security level to half of the cipher’s internal state size.
Matthias Hamann, Alexander Moch, Matthias Krause, Vasily Mikhalev   +3 more
doaj   +5 more sources

Fruit-80: A Secure Ultra-Lightweight Stream Cipher for Constrained Environments. [PDF]

Entropy (Basel), 2018
In Fast Software Encryption (FSE) 2015, while presenting a new idea (i.e., the design of stream ciphers with the small internal state by using a secret key, not only in the initialization but also in the keystream generation), Sprout was proposed. Sprout
Amin Ghafari V, Hu H.
europepmc   +2 more sources

Generic attacks on small-state stream cipher constructions in the multi-user setting

Cybersecurity, 2023
Small-state stream ciphers (SSCs), which violate the principle that the state size should exceed the key size by a factor of two, still demonstrate robust security properties while maintaining a lightweight design.
Jianfu Huang, Ye Luo, Qinggan Fu, Yincen Chen, Chao Wang, Ling Song   +5 more
doaj   +2 more sources

Provable security against generic attacks on stream ciphers

Journal of Mathematical Cryptology, 2023
Recent lightweight hardware-based stream cipher designs keep an external non-volatile internal state that is not part of the cipher’s hardware module. The purpose of these so-called small-state ciphers is to keep the size of the hardware and the power ...
Moch Alexander
doaj   +2 more sources

Analysis of Atom against quantum attacks

IET Quantum Communication
A significant amount of study is being done to review the security promises made for the various ciphers now in use as a result of the development of quantum computing technology.
Ravi Anand, Rimpa Nandi, Takanori Isobe
doaj   +2 more sources

A TMDTO Attack Against Lizard

IEEE Transactions on Computers, 2018
Lizard is a very recently proposed lightweight stream cipher that claims 60 bit security against distinguishing (related to state recovery) and 80 bit security against key recovery attack. This cipher has 121 bit state size. In this paper, we first note that using $\psi$ key stream bits one can recover $\psi$ unknown bits of the state ...
Subhamoy Maitra, Nishant Sinha, Akhilesh Siddhanti   +2 more
exaly   +6 more sources

A New Guess‐and‐Determine Method for Cryptanalysis of the GSM Encryption

Complexity, Volume 2023, Issue 1, 2023., 2023
Cryptanalysis is the process of finding flaws or oversights in an encryption algorithm. Nearly, all encryption algorithms are carefully examined through cryptanalysis to determine the security of the system in which the encryption algorithm has been employed.
Ashish Jain, Inderjeet Kaur, Akhilesh Kumar Sharma, Nirmal Kumar Gupta, Partha Chakraborty, Rosa M. Lopez Gutierrez   +5 more
wiley   +1 more source

The DRACO V1 Stream Cipher

IACR Transactions on Symmetric Cryptology
Time-memory-data tradeoff attacks, as described by Babbage (1995), Golić (1997), and Biryukov and Shamir (2001), require the internal state of a stream cipher to be at least twice the desired security level n, or equivalently twice the key length.
Subhadeep Banik, Matthias Hamann, Matthias Krause, Alexander Moch, Francesco Regazzoni, Linda Scheu-Hachtel   +5 more
doaj   +1 more source

Chaos-Based Lightweight Cryptographic Algorithm Design and FPGA Implementation. [PDF]

Entropy (Basel), 2022
Guang Y, Yu L, Dong W, Wang Y, Zeng J, Zhao J, Ding Q.   +6 more
europepmc   +1 more source