Results 11 to 20 of about 15,306 (284)
Key derivation function: key-hash based computational extractor and stream based pseudorandom expander [PDF]
PeerJ Computer ScienceThe key derivation function is a specific cryptographic algorithm that transforms private string and public strings into one or more cryptographic keys.
Chai Wen Chuah +2 more
doaj +3 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 +2 more
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Stream cipher based on quasigroup string transformations in $Z_p^*$ [PDF]
, 2004 In this paper we design a stream cipher that uses the algebraic structure of the multiplicative group $\bbbz_p^*$ (where p is a big prime number used in ElGamal algorithm), by defining a quasigroup of order $p-1$ and by doing quasigroup string ...
Gligoroski, Danilo
core +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
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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 +6 more
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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
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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
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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 +6 more
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Algebraic Side Channel Attack on Trivium and Grain Ciphers
IEEE Access, 2017 Solving a system of multivariate quadratic equations obtained through algebraic cryptanalysis is a nondeterministic polynomial time-complete problem. Owing to the trend of stream ciphers based on nonlinear update, the success of algebraic attacks has ...
Asif Raza Kazmi +4 more
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