Abstract
The MEM mode is a nonce-based encryption mode of operation proposed by Chakraborty and Sarkar, which was claimed to be secure against symmetric nonce respecting adversaries. We first compare this security model with two similar models and then show that MEM is not secure under symmetric respecting attacks. One attack needs one decryption and one encryption queries, and the other only needs one encryption query.
Keywords
- Blockcipher
- tweakable blockcipher
- modes of operation
- nonce-based encryption
- security model
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Wang, P., Feng, D., Wu, W. (2006). Symmetric Nonce Respecting Security Model and the MEM Mode of Operation. In: Barua, R., Lange, T. (eds) Progress in Cryptology - INDOCRYPT 2006. INDOCRYPT 2006. Lecture Notes in Computer Science, vol 4329. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11941378_20
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DOI: https://doi.org/10.1007/11941378_20
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-49767-7
Online ISBN: 978-3-540-49769-1
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