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, 1997 In this paper we present a new 128-bit block cipher called Square. The original design of Square concentrates on the resistance against differential and linear cryptanalysis. However, after the initial design a dedicated attack was mounted that forced us to augment the number of rounds.
Joan Daemen +2 more
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Iterative Block Ciphers from Tweakable Block Ciphers with Long Tweaks
IACR Transactions on Symmetric Cryptology, 2020 We consider a problem of constructing a secure block cipher from a tweakable block cipher (TBC) with long tweaks. Given a TBC with n-bit blocks and Γn-bit tweaks for Γ ≥ 1, one of the constructions by Minematsu in DCC 2015 shows that a simple iteration ...
Ryota Nakamichi, Tetsu Iwata
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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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Dynamic Rounds Chaotic Block Cipher Based on Keyword Abstract Extraction [PDF]
Entropy, 2018 According to the keyword abstract extraction function in the Natural Language Processing and Information Retrieval Sharing Platform (NLPIR), the design method of a dynamic rounds chaotic block cipher is presented in this paper, which takes into account ...
Juan Wang, Qun Ding
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On Compression of Data Encrypted with Block Ciphers [PDF]
arXiv, 2010 This paper investigates compression of data encrypted with block ciphers, such as the Advanced Encryption Standard (AES). It is shown that such data can be feasibly compressed without knowledge of the secret key. Block ciphers operating in various chaining modes are considered and it is shown how compression can be achieved without compromising ...
Demijan Klinc +4 more
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Recover plaintext attack to block ciphers [PDF]
arXiv, 2008 we will present an estimation for the upper-bound of the amount of 16-bytes plaintexts for English texts, which indicates that the block ciphers with block length no more than 16-bytes will be subject to recover plaintext attacks in the occasions of plaintext -known or plaintext-chosen attacks.
An-Ping Li
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On Compression of Data Encrypted with Block Ciphers [PDF]
2009 Data Compression Conference, 2009 This paper investigates compression of data encrypted with block ciphers, such as the Advanced Encryption Standard (AES). It is shown that such data can be feasibly compressed without knowledge of the secret key. Block ciphers operating in various chaining modes are considered and it is shown how compression can be achieved without compromising ...
Demijan Klinc +4 more
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New Methodology of Block Cipher Analysis using Chaos Game [PDF]
ITB Journal of Information and Communication Technology, 2011 Block cipher analysis covers randomness analysis and cryptanalysis. This paper proposes a new method potentially used for randomness analysis and cryptanalysis. The method uses true random sequence concept as a reference for measuring randomness level of
Budi Sulistyo +3 more
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On some block ciphers and imprimitive groups [PDF]
Applicable Algebra in Engineering, Communication and Computing, 2008 The group generated by the round functions of a block ciphers is a widely investigated problem. We identify a large class of block ciphers for which such group is easily guaranteed to be primitive. Our class includes the AES and the SERPENT.
A. Caranti +2 more
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New mode of operation inspired by the braid of long hair [PDF]
Revista Română de Informatică și Automatică, 2023 In cryptography, a mode of operation is the way of processing plaintext and encrypted text blocks within a block cipher algorithm, or it is the presentation of a method of chaining blocks in a block cipher.
Hana ALI-PACHA +2 more
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