In this paper, we discuss non-interactive updating of decryption keys in identity-based encryption (IBE). IBE is a public key cryptosystem where a public key is an arbitrary strin...
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...
A trapdoor based on an extension of the RSA trapdoor is proposed. The same function as in the RSA cryptosystem is used, i.e. x modn, but there is no restriction for the exponent t...
Network Multimedia data also need to be encrypted to protect private content and access control. Considering performance constraints and embedded system issues, many hardware solu...
Anonymous hierarchical identity based encryption (HIBE) is an extension of identity based encryption (IBE) that can use an arbitrary string like an e-mail address for a public key...