Ragib HasanJohns Hopkins Universityen.600.412 Spring 2011
Lecture 402/21/2011
Security and Privacy in Cloud Computing
en.600.412 Spring 2011 Lecture 4 | JHU | Ragib Hasan 2
Securing Data in a Cloud
ProblemHow do we secure data that has been outsourced to a cloud?
GoalLearn about different techniques in secure data outsourcing
Review Assignment #3Ateniese et al., Provable data possession at untrusted store, CCS 2007
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en.600.412 Spring 2011 Lecture 4 | JHU | Ragib Hasan 3
Recap
From last lecture: Trustworthy Cloud Computing Platform
Pros:
Cons:
Ideas:02/21/2011
en.600.412 Spring 2011 Lecture 4 | JHU | Ragib Hasan 4
Provable Data Possession
Idea:Don’t trust the server, rather challenge it from time to time to see if it still has the data
Goals:Client should retain minimal amount of metadata, challenges should be small, and responses shouldn’t be easy to guess
02/21/2011
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