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Key derivation function: key-hash based computational extractor and stream based pseudorandom expander [PDF]

PeerJ Computer Science
The key derivation function is a specific cryptographic algorithm that transforms private string and public strings into one or more cryptographic keys.
Chai Wen Chuah, Nur Ziadah Harun, Isredza Rahmi A. Hamid   +2 more
doaj   +3 more sources

Towards Low Energy Stream Ciphers

IACR Transactions on Symmetric Cryptology, 2018
Energy optimization is an important design aspect of lightweight cryptography. Since low energy ciphers drain less battery, they are invaluable components of devices that operate on a tight energy budget such as handheld devices or RFID tags.
Subhadeep Banik, Vasily Mikhalev, Frederik Armknecht, Takanori Isobe, Willi Meier, Andrey Bogdanov, Yuhei Watanabe, Francesco Regazzoni   +7 more
doaj   +5 more sources

LIZARD – A Lightweight Stream Cipher for Power-constrained Devices

IACR Transactions on Symmetric Cryptology, 2017
Time-memory-data (TMD) tradeoff attacks limit the security level of many classical stream ciphers (like E0, A5/1, Trivium, Grain) to 1/2n, where n denotes the inner state length of the underlying keystream generator.
Matthias Hamann, Matthias Krause, Willi Meier   +2 more
doaj   +2 more sources

Quantum Stream Cipher Based on Holevo-Yuen Theory: Part II. [PDF]

Entropy (Basel)
Hirota O, Sohma M.
europepmc   +3 more sources

COUNTER MODE DEVELOPMENT FOR BLOCK CIPHER OPERATIONS [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2012
There are two basic types of symmetric cipher: block ciphers and stream ciphers. Block ciphers operate on blocks of plaintext and ciphertext—usually of 64 bits but sometimes longer. Stream ciphers operate on streams of plaintext and ciphertext one bit or
Ali M. Sagheer, Ahmed T. Suod
doaj   +1 more source

Atom: A Stream Cipher with Double Key Filter

IACR Transactions on Symmetric Cryptology, 2021
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.
Subhadeep Banik, Andrea Caforio, Takanori Isobe, Fukang Liu, Willi Meier, Kosei Sakamoto, Santanu Sarkar   +6 more
doaj   +1 more source

Counter Mode Development for Block Cipher Operations [PDF]

Al-Rafidain Journal of Computer Sciences and Mathematics, 2009
There are two basic types of symmetric algorithms: block ciphers and stream ciphers. Block ciphers operate on blocks of plaintext and ciphertext—usually of 64 bits but sometimes longer.
Ali Sagheer
doaj   +1 more source

Using SAT Solvers to Finding Short Cycles in Cryptographic Algorithms [PDF]

International Journal of Electronics and Telecommunications, 2020
A desirable property of iterated cryptographic algorithms, such as stream ciphers or pseudo-random generators, is the lack of short cycles. Many of the previously mentioned algorithms are based on the use of linear feedback shift registers (LFSR) and ...
Władysław Dudzic, Krzysztof Kanciak
doaj   +1 more source

A Secure Real-Time IoT Data Stream Based on Improved Compound Coupled Map Lattices

Applied Sciences, 2022
A secure data stream is important for the real time communications of Internet of Things (IoT). A stream cipher with the characteristics of simple and high speed is suitable in the secure communications of IoT for its security.
Shyi-Tsong Wu
doaj   +1 more source

Perfect Trees: Designing Energy-Optimal Symmetric Encryption Primitives

IACR Transactions on Symmetric Cryptology, 2021
Energy efficiency is critical in battery-driven devices, and designing energyoptimal symmetric-key ciphers is one of the goals for the use of ciphers in such environments. In the paper by Banik et al.
Andrea Caforio, Subhadeep Banik, Yosuke Todo, Willi Meier, Takanori Isobe, Fukang Liu, Bin Zhang   +6 more
doaj   +1 more source