Soumyadeep Bhattacharya

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Network Security has gained an ever increasing importance today because of the increased dependence on the networks. One way to assess the threats to the networks is through the use of the attack graphs. However, because of their sheer enormity and complexity the analysis becomes difficult. Given an attack graph the identification of a probable attack path(More)
In todaypsilas large complex organizational network, security administration is a challenging task. The typical means by which an attacker breaks into a network is through a series of exploits, where each exploit in the series satisfies the pre-condition for subsequent exploits and makes a causal relationship among them. Such a series of exploit is called(More)
TCS SHA-3 is a family of four cryptographic hash functions that are covered by an US patent (US 2009/0262925). The digest sizes are 224, 256, 384 and 512 bits. The hash functions use bijective functions in place of the standard, compression functions. In this paper we describe first and second preimage attacks on the full hash functions. The second preimage(More)
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