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2009 15th IEEE International On-Line Testing Symposium
Pseudo-random number generation applied to robust modern cryptography: A new technique for block ciphers
Sesimbra-Lisbon, Portugal
June 24-June 26
ISBN: 978-1-4244-4596-7
Alejandro Jimenez-Horas, Microelectronic Design and Applications Group, Electronic Technology Dept., Carlos III University of Madrid, Spain
Enrique San Millan, Microelectronic Design and Applications Group, Electronic Technology Dept., Carlos III University of Madrid, Spain
Celia Lopez-Ongil, Microelectronic Design and Applications Group, Electronic Technology Dept., Carlos III University of Madrid, Spain
Marta Portela-Garcia, Microelectronic Design and Applications Group, Electronic Technology Dept., Carlos III University of Madrid, Spain
Mario Garcia-Valderas, Microelectronic Design and Applications Group, Electronic Technology Dept., Carlos III University of Madrid, Spain
Luis Entrena, Microelectronic Design and Applications Group, Electronic Technology Dept., Carlos III University of Madrid, Spain
Latest mitigation techniques proposed at register-transfer level for dependable cryptosystems deal with time redundancy in an active on-line error-detection scheme. Round-based block ciphers are very likely to be hardened with these techniques. Although good results are achieved in terms of area or time overhead, intentional attacks are still able to obtain crucial information by means of intensive fault injection campaigns. In this paper, a new solution is presented and analyzed, dealing with pseudo-random number generators (PRNG) with the goal of misleading attackers and, therefore, making cryptosystem more robust. With this approach, attackers must face two difficulties: dealing with on-line error detection and ignoring the fault location in the round sequence. PRNG will produce different repetition sequences for the rounds of the cryptosystem, making very difficult to correlate output data with injected faults.
Citation:
Alejandro Jimenez-Horas, Enrique San Millan, Celia Lopez-Ongil, Marta Portela-Garcia, Mario Garcia-Valderas, Luis Entrena, "Pseudo-random number generation applied to robust modern cryptography: A new technique for block ciphers," iolts, pp.203-205, 2009 15th IEEE International On-Line Testing Symposium, 2009
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