Using Predicate Extension for Predicate Encryption to Generically Obtain Chosen-Ciphertext Security and Signatures

ePrint Report: Using Predicate Extension for Predicate Encryption to Generically Obtain Chosen-Ciphertext Security and Signatures

Marloes Venema, Leon Botros

Predicate encryption (PE) is a type of public-key encryption that captures many useful primitives such as attribute-based encryption (ABE). Although much progress has been made to generically achieve security against chosen-plaintext attacks (CPA) efficiently, in practice, we also require security against chosen-ciphertext attacks (CCA). Because achieving CCA-security on a case-by-case basis is a complicated task, several generic conversion methods have been …

attribute-based encryption ciphertext encryption eprint report extension key progress public report security signatures