Relations Among Notions of Non-Malleability for Encryption

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Provided by: MIT
Topic: Security
Format: PDF
The basic goal of an encryption scheme is to guarantee the privacy of data. A good formalization of privacy is the notion of semantic security as defined by the researchers. Since its introduction in the early 90's, the notion of non-malleability for encryption schemes has been formalized using a number of conceptually different definitional approaches - most notably, the \"Pragmatic\" indistinguishability-based approach and the \"Semantical\" simulation-based approach. The authors provide a full characterization of these approaches and consider their robustness under composition.
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