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Information × Registration Number 0217U006657, 0117U001817 , R & D reports Title Research, Development and Implementation of Cryptanalytic Techniques for Symmetric and Asymmetric Cryptosystems popup.stage_title Head Savchuk Mikhael, Registration Date 08-12-2017 Organization Faculty of аircraft and space systems NTUU "KPI" popup.description2 New efficient methods, techniques, and algorithms were provided for cryptographic analysis of contemporary symmetric and asymmetric cryptosystems; classes of secure and insecure ciphers were described in classical and quantum computational models with respect to dedicated cryptanalytical attacks; analytic upper bounds estimations were founded for differential probabilities of word-oriented SP-networks with respect to some algebraic operation over words; message subspaces propagation in AES-like block ciphers was researched; estimations for size of linear system in special form were generalized from point of view of solving algorithms with fixed error probability; such estimations can be used for proving security of word-oriented stream ciphers against correlation attacks; new generalized algebraic model of symmetric cipher was developed; it was proven, that known plaintext security problem for symmetric and endomorph ciphers are polynomial equivalent; so-called "kleptographic" techniques for trapdoor embedding into cryptoalgorithms were researched, as well as methods for provable security providing; new concept was proposed for cryptosystem based on trusted outer pseudo-random generator; new Diffie-Hellmann-based protocol with guaranteed kleptographic SETUP trapdoor absence was proposed5481 Product Description popup.authors Беспалов А.Ю. Деркач О.Г. Коваленко Б. Ковальчук Л.В. Кудін А.М. Олексійчук А. Поремський М. Фаль О.М. Фесенко А.В. Циганкова О.В. Яковлєв С.В. popup.nrat_date 2020-04-02 Close