Abstract:Abstract. When random numbers are needed, kernel level threads can use at least one of two random number generators (RNGs), called LRNG and MD5 PRNG. LRNG is a well-known cryptographic RNG accessed via /dev/(u)random and MD5 PRNG provides a function interface get_random_int(). While the /dev/(u)random has been investigated a lot, MD5 PRNG had been regarded as a less important one. In this paper, we demonstrate MD5 PRNG is vulnerable against a generic attack by searching entropy source in some embedded systems.… Show more
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