On Beyond-Birthday-Bound Security: Revisiting the Development of ISO/IEC 9797-1 MACs
| Autor: | Shen, Yaobin, Wang, Lei |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | IACR Transactions on Symmetric Cryptology; Volume 2019, Issue 2; 146-168 IACR Transactions on Symmetric Cryptology, Vol 2019, Iss 2 (2019) |
| ISSN: | 2519-173X |
| Popis: | ISO/IEC 9797-1 is an international standard for block-cipher-based Message Authentication Code (MAC). The current version ISO/IEC 9797-1:2011 specifies six single-pass CBC-like MAC structures that are capped at the birthday bound security. For a higher security that is beyond-birthday bound, it recommends to use the concatenation combiner of two single-pass MACs. In this paper, we reveal the invalidity of the suggestion, by presenting a birthday bound forgery attack on the concatenation combiner, which is essentially based on Joux’s multi-collision. Notably, our new forgery attack for the concatenation of two MAC Algorithm 1 with padding scheme 2 only requires 3 queries. Moreover, we look for patches by revisiting the development of ISO/IEC 9797-1 with respect to the beyond-birthday bound security. More specifically, we evaluate the XOR combiner of single-pass CBC-like MACs, which was used in previous version of ISO/IEC 9797-1. IACR Transactions on Symmetric Cryptology, Volume 2019, Issue 2 |
| Databáze: | OpenAIRE |
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