Download Computer Security – ESORICS 2012: 17th European Symposium on by Elli Fragkaki, Lujo Bauer, Limin Jia, David Swasey (auth.), PDF

By Elli Fragkaki, Lujo Bauer, Limin Jia, David Swasey (auth.), Sara Foresti, Moti Yung, Fabio Martinelli (eds.)

This e-book constitutes the refereed complaints of the seventeenth eu Symposium on machine protection, ESORICS 2012, held in Pisa, Italy, in September 2012. The 50 papers integrated within the publication have been conscientiously reviewed and chosen from 248 papers. The articles are equipped in topical sections on safety and information safeguard in actual platforms; formal types for cryptography and entry regulate; protection and privateness in cellular and instant networks; counteracting man-in-the-middle assaults; community safeguard; clients privateness and anonymity; place privateness; vote casting protocols and nameless conversation; inner most computation in cloud structures; formal defense versions; id dependent encryption and workforce signature; authentication; encryption key and password safeguard; malware and phishing; and software program security.

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Read Online or Download Computer Security – ESORICS 2012: 17th European Symposium on Research in Computer Security, Pisa, Italy, September 10-12, 2012. Proceedings PDF

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Sample text

Kelley, R. Tamassia, and N. Triandopoulos succeeds, if A wins non-negligiblely often, then so does B, contradicting the security of the MAC scheme. Thus, it must be that there does not exist an A that can win the game with non-negligible probability. This, combined with the previous result, implies that A cannot win the game for any of the protocols. Proof of Security of the Access Token. The definition of security for the access token is most naturally existential unforgeability under chosen-plaintext attacks.

GFS has thus inspired several copy-cat cloudcentric implementations, including the Hadoop File System, CloudStore, and TPlatform [4,6,22], all of these falling under the banner of GFS-like file systems. 1 Security Issues and Challenges In a GFS-like system, files are broken up into blocks which are replicated and distributed across multiple data servers to achieve fault-tolerance. The system is managed by a central metadata server that handles all metadata operations and tracks the placement of blocks, seeking to balance the load across all servers and maintain enough replicas of blocks.

Note that these inter-server interactions have the same efficiency as the client–data server protocol for writing a block. As part of increasing the security of GFS-like file systems, we have the data server become a point of enforcement for the access controls. Suppose a client wants to access a file consisting of blocks b1 , · · · , bn . The metadata server M first checks that C has access rights, then creates a token ti for each block bi . Each ti is valid only at the corresponding data server that holds a copy of bi , call it D.

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