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Using the decorrelation techniques we compare the randomness of three schemes used in the AES candidates. The target schemes are the original Feistel scheme and two modified Feistel schemes: the MARS-like structure and the CAST256-like structure. As a resu ...
Presents xmx (xor-multiply-xor), a new symmetric block cipher optimized for public-key libraries and microcontrollers with arithmetic coprocessors. xmx has no S-boxes and uses only modular multiplications and XORs. The complete scheme can be described by a ...
We examine key agreement protocols providing: (i) key authentication, (ii) key confirmation, and (iii) forward secrecy. Attacks are presented against previous two-party key agreement schemes and we subsequently present a protocol providing the properties l ...
Over the last year or two, a large number of attacks have been found by the authors and others on protocols based on the discrete logarithm problem, such as ElGamal signature and Diffie Hellman key exchange. These attacks depend on causing variables to ass ...
Motivée par le commerce et l'industrie, la recherche publique dans le domaine du chiffrement symétrique s'est considérablement développée depuis vingt cinq ans si bien qu'il est maintenant possible d'en faire le bilan. La recherche a tout d'abord progressé ...
In this paper we investigate a new way of protecting block ciphers against classes of attacks (including differential and linear crypt-analysis) which is based on the notion of decorrelation which is fairly connected to Carter-Wegman's notion of universal ...
The article presents the first results of the CrySTINA project. We analyze and structure the security problem domain in the TINA-C architecture and present our approach to provide the necessary security functionality in the form of self-contained applicati ...
The article presents the first results of the CrySTINA project. We analyze and structure the security problem domain in the TINA-C architecture and present our approach to provide the necessary security functionality in the form of self-contained applicati ...
The article presents the first results of the CrySTINA project. We analyze and structure the security problem domain in the TINA-C architecture and present our approach to provide the necessary security functionality in the form of self-contained applicati ...
