Secure Integration of Asymmetric and Symmetric Encryption Schemes
This paper presents a generic conversion from weak asymmetric and symmetric encryption schemes to an asymmetric encryption scheme that is chosen-ciphertext secure in the random oracle model. Our conversion is the first generic transformation from an arbitrary one-way asymmetric encryption scheme to a chosen-ciphertext secure asymmetric encryption scheme in the random oracle model.
generic conversion random oracle model asymmetric and symmetric (or public-key and private-key) encryptions indistinguishability against chosen ciphertext attacks (ind-cca) security proof