| Autor: |
Bringer, Julien, Chabanne, Hervé, Icart, Thomas |
| Zdroj: |
Progress in Cryptology - INDOCRYPT 2009; 2009, p88-103, 16p |
| Abstrakt: |
We describe a solution for physically obfuscating the representation of a cipher, to augment chips resistance against physical threats, by combining ideas from masking techniques and Physical Obfuscated Keys (POKs). With embedded chips – like RFID tags – as main motivation, we apply this strategy to the representation of a Linear Feedback Shift Register (LFSR). The application of this technique to LFSR-based stream ciphers, such as the Self Shrinking Generator, enables to share key materials between several chips within a system while increasing the resistance of the system against compromise of chips. An extension of our ideas to non-linear ciphers is also presented with an illustration onto Trivium. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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