Stream Ciphers
نویسندگان
چکیده
منابع مشابه
Stream ciphers and the eSTREAM project
Stream ciphers are an important class of symmetric cryptographic algorithms. The eSTREAM project contributed significantly to the recent increase of activity in this field. In this paper, we present a survey of the eSTREAM project. We also review recent time/memory/data and time/memory/key trade-offs relevant for the generic attacks on stream ciphers.
متن کاملCryptanalysis and Design of Stream Ciphers
This thesis presents some novel results on the cryptanalysis and design of stream ciphers. The first part of the thesis introduces various stream ciphers design and cryptanalysis techniques. The second part of the thesis gives the cryptanalysis of seven stream ciphers. The properties of addition are exploited in the cryptanalysis of two stream ciphers: the differential-linear cryptanalysis agai...
متن کاملNew Results of Related-key Attacks on All Py-Family of Stream Ciphers
The stream cipher TPypy has been designed by Biham and Seberry in January 2007 as the strongest member of the Py-family of stream ciphers. At Indocrypt 2007, Sekar, Paul and Preneel showed related-key weaknesses in the Py-family of stream ciphers including the strongest member TPypy. Furthermore, they modified the stream ciphers TPypy and TPy to generate two fast ciphers, namely RCR-32 and RCR-...
متن کاملA General Encryption Scheme Based on MDS Code ( Extended Summary )
Many applications, such as wireless communications, high speed multimedia data streaming systems and sensor networks, call for strong ciphers with low computation complexity and high speed in encryption and decryption. Additive stream ciphers usually have lower computation complexity and thus provide higher encryption/decryption speed than block ciphers. An additive stream cipher usually encryp...
متن کاملA Filter Bank View of Block and Stream Ciphers
Vaidyanathan suggested the use of filter banks with coefficients in finite fields as stream ciphers. We show how to break those ciphers. A more general class of ciphers is introduced, which includes many well-known block ciphers, like DES, IDEA, etc. These ciphers are derived from filter banks over group rings.
متن کاملStream Ciphers: Dead or Alive?
Secret key cryptography was traditionally divided into block ciphers and stream ciphers, but over the last 30 years the balance had steadily shifted, and today stream ciphers have become an endangered species. In this talk I'll survey the current state of the art in stream ciphers: who needs them, who uses them, how they are attacked, and how they can be protected by new types of constructions.
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