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Chen Yuan and Dong Qingkuan RCCA security for KEM+DEM style hybrid encryptions and a general hybrid paradigm from RCCA-secure KEMs to CCA-secure encryptions Security and Communication Networks 7

Version of Record online: 1 SEP 2013 | DOI: 10.1002/sec.853

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This paper adapts replayable chosen-ciphertext attack security to the most popular hybrid paradigms, KEM+DEM and Tag-KEM/DEM. We find some interesting results for Tag-KEM/DEM and introduce a new hybrid paradigm, named as KEM/Tag-DEM, where the ciphertext of KEM is used as a tag for Tag-DEM scheme rather than reversely in Tag-KEM/DEM.

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