An identity-based encryption (IBE) scheme can greatly reduce the complexity of sending encrypted messages. However, an IBE scheme necessarily requires a private-key generator (PKG)...
We propose two constructions of chosen-ciphertext secure identity-based encryption (IBE) schemes. Our schemes have a security proof in the standard model, yet they offer performan...
Abstract. We propose a simple and efficient construction of a CCAsecure public-key encryption scheme from any CPA-secure identity-based encryption (IBE) scheme. Our construction re...
An extended abstract of this paper appears in Kaoru Kurosawa (Ed.): Advances in Cryptology ASIACRYPT 2007, volume 4833 of Lecture Notes in Computer Science, pages 265–282, Spring...