A general model for MAC generation using direct injection
Contribuinte(s) |
Kutylowski, Miroslaw Yung, Moti |
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Data(s) |
01/12/2013
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Resumo |
This paper presents a model for generating a MAC tag by injecting the input message directly into the internal state of a nonlinear filter generator. This model generalises a similar model for unkeyed hash functions proposed by Nakano et al. We develop a matrix representation for the accumulation phase of our model and use it to analyse the security of the model against man-in-the-middle forgery attacks based on collisions in the final register contents. The results of this analysis show that some conclusions of Nakano et al regarding the security of their model are incorrect. We also use our results to comment on several recent MAC proposals which can be considered as instances of our model and specify choices of options within the model which should prevent the type of forgery discussed here. In particular, suitable initialisation of the register and active use of a secure nonlinear filter will prevent an attacker from finding a collision in the final register contents which could result in a forged MAC. |
Formato |
application/pdf |
Identificador | |
Publicador |
Springer |
Relação |
http://eprints.qut.edu.au/55534/1/55534S.pdf DOI:10.1007/978-3-642-38519-3_13 Bartlett, Harry, Al Mashrafi, Mufeed, Simpson, Leonie, Dawson, Edward, & Wong, Kenneth Koon-Ho (2013) A general model for MAC generation using direct injection. Lecture Notes in Computer Science [Information Security and Cryptology: 8th International Conference, Inscrypt 2012], 7763, pp. 198-215. |
Direitos |
Copyright 2012 Please consult the authors. |
Fonte |
School of Electrical Engineering & Computer Science; Institute for Future Environments; School of Mathematical Sciences; Science & Engineering Faculty |
Palavras-Chave | #080402 Data Encryption #MAC #Hash functions #Stream ciphers #Forgery attacks #SSS #SOBER-128 #NLSv2 |
Tipo |
Journal Article |