Abstract:
An overview of authentication codes with secrecy designed for information protection from passive and active attacks is proposed. Special attention is devoted to constructions and assessment of secrecy of authentication codes of combinatory or algebraic nature. The symmetrical cipher systems implementing ciphering with authentication are also considered as authentication codes with secrecy.
Key words:authentication code with secrecy, probabilities of active attacks success, $\epsilon$-perfect enciphering.
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