The Cramer-Shoup Encryption Scheme Is Plaintext Aware in the Standard Model

In this paper we examine the security criteria for a KEM and a DEM that are sufficient for the overall hybrid encryption scheme to be plaintext-aware in the standard model. We apply this theory to the Cramer-Shoup hybrid scheme acting on fixed length messages and deduce that the Cramer-Shoup scheme is plaintext-aware in the standard model. This answers a previously open conjecture of Bellare and Palacio on the existence of plaintext-aware encryption schemes.

• Type: Conference
• Year: 2006
• Where: EUROCRYPT
• Authors: Alexander W. Dent
• Keywords: Cramer-Shoup Hybrid Scheme, Cryptology, Encryption Schemes, EUROCRYPT 2006, Hybrid Encryption Scheme