Results 21 to 30 of about 26,227 (226)
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 +3 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
Area-Efficient Parallel Reconfigurable Stream Processor for Symmetric Cryptograph
IEEE Access, 2021 Represented by application-specific instruction set processors (ASIPs) and array processors, existing cryptographic processors face challenges in application to mobile terminals with sensitive security requirements.
Yufei Zhu +6 more
doaj +1 more source
A novel H.264 SVC encryption scheme for secure bit-rate transcoding [PDF]
, 2009 This paper presents a novel architecture for the secure delivery of encrypted H.264 SVC bitstreams. It relies on a block cipher and stream cipher used in a novel way that would allow an intermediary transcoder to truncate the bitstream to the appropriate
Bull, DR, Redmill, DW, Thomas, NM
core +2 more sources
Comparison analysis of stream cipher algorithms for digital communication [PDF]
, 2007 The broadcast nature of radio communication such as in the HF (High Frequency) spectrum exposes the transmitted information to unauthorized third parties. Confidentiality is ensured by employing cipher system.
Mat Sidek, Abd. Rahim +1 more
core +1 more source
Secure Algorithms for SAKA Protocol in the GSM Network [PDF]
, 2017 This paper deals with the security vulnerabilities of the cryptographic algorithms A3, A8, and A5 existing in the GSM network. We review these algorithms and propose new secure algorithms named NewA3, NewA8, and NewA5 algorithms with respect to the A3 ...
Chaudhari, N.S., Saxena, N.
core +1 more source
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 +1 more source
BLOSTREAM: A HIGH SPEED STREAM CIPHER [PDF]
Journal of Engineering Science and Technology, 2017 Although stream ciphers are widely utilized to encrypt sensitive data at fast speeds, security concerns have led to a shift from stream to block ciphers, judging that the current technology in stream cipher is inferior to the technology of block ciphers.
ALI H. KASHMAR, EDDIE S. ISMAIL
doaj
Cryptanalysis of a family of self-synchronizing chaotic stream ciphers [PDF]
, 2009 Unimodal maps have been broadly used as a base of new encryption strategies. Recently, a stream cipher has been proposed in the literature, whose keystream is basically a symbolic sequence of the (one-parameter) logistic map or of the tent map.
Alvarez, Gonzalo +3 more
core +2 more sources
MV3: A new word based stream cipher using rapid mixing and revolving buffers [PDF]
, 2006 MV3 is a new word based stream cipher for encrypting long streams of data. A direct adaptation of a byte based cipher such as RC4 into a 32- or 64-bit word version will obviously need vast amounts of memory. This scaling issue necessitates a look for new
A. Biryukov +14 more
core +3 more sources