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Several variants of new digital signature schemes (DSS) based on the discrete logarithm and factorization problems have been proposed. Considered DSS are characterized in that a novel mechanism of the signature generation is used, in which two parameters of the (k, S) or (R, S) signature are defined after solving a system of two congruences. In the case of(More)
The paper considers the design of two-step zero-knowledge protocols of two different types: 1) protocols based on the public encryption 2) protocols based on the public key agreement scheme. The novelty of the proposed design relating to the first type of protocols consists in using specified labels that are embedded in the encrypted message. Due to using(More)
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