Deniable Encryption Based on Block Ciphers
Purpose: The available methods of shared-key deniable encryption satisfying the criterion of indistinguishability from probabilistic encryption have comparatively low performance. This paper is devoted to developing a method for faster deniable encryption based on using block ciphers. Methods: Reversing the block-ciphering transformation, statistic experiments, simultaneous encryption of two independent messages using two different keys. Results: A new method was developed to carry out deniable encryption by performing direct block transformation with the first key and inverse block transformation with the second key when encrypting two messages. The formulas were derived to estimate the parameters of the algorithms based on the proposed method. Practical relevance: The proposed method can be applied in computer security systems.