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Author Recacha, Francisco
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Abstract ABSTRACT: This paper presents 1 a new Authenticated Encryption (AE) mode, called IOC (Input and Output Chaining) 2, that guarantees data confidentiality and integrity when used with any block cipher algorithm. The main interest of IOC is that each block of the message is only ciphered once to implement simultaneously both services while the added complexity is almost negligible and, possibly, significantly below any other AE mode. IOC is a simplification of IOBC mode (Input and Output Block Chaining) proposed by the author in 1996, but obtaining now in IOC a much stronger and lightweight AE mode. This paper presents: (a) an introduction of IOBC from which IOC is derived; (b) the specification of IOC mode; (c) an analytical model for IOC analysis together with a characterization of its core properties; and (d) an exhaustive IOC cryptanalysis, indicating that this method is secure since the best probability an attacker has to by-pass IOC integrity mechanism is not higher than 2-(n-5/4) independently of whatever amount of computing resources are spent (being n the block size of the cipher algorithm used, assuming the used cipher algorithm is a ‘perfect ’ secret randomizer).
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study
Learning Resource Type Article
Publisher Date 2013-01-01