This paper describes the first identity-based broadcast encryption scheme (IBBE) with
constant size ciphertexts and private keys. In our scheme, the public key is of size linear in …

We present new techniques for achieving adaptive security in broadcast encryption systems.
Previous work on fully collusion resistant broadcast encryption systems with very short …

For realizing the flexible, scalable and fuzzy fine-grained access control, ciphertext policy
attribute-based encryption (CP-ABE) scheme has been widely used in the cloud storage …

Key escrow is inherent in identity-based encryption (IBE). A curious key generation center
(KGC) can simply generate the user's private key to decrypt a ciphertext. However, can a …

Recently, many multireceiver identity-based encryption schemes have been proposed in the
literature. However, none can protect the privacy of message receivers among these …

With the popularity of mobile devices, how to enhance the security and privacy in wireless
communications has gained comprehensive attention. Many cryptographic schemes have …

In this paper, we introduce a new primitive called identitybased encryption with wildcard key
derivation (WKD-IBE, or “wicked IBE”) that enhances the concept of hierarchical identity …

Typically, for the system transformation from an original public-key cryptographic system
(PKCS) setting to another PKCS setting, the relevant cryptographic schemes must be …

Recently, numerous multireceiver identity‐based encryption or identity‐based broadcast
encryption schemes have been introduced with bilinear pairing and probabilistic map‐to …

Anonymous multireceiver encryption (AMRE) allows a data provider to transmit a ciphertext
to a designated group of receivers. Any receiver of the designated group can get the …