White-box cryptography has attracted a growing interest from researchers in the last decade. Several white-box implementations of standard block-ciphers (DES and AES) have been proposed but they have all been broken. On the other hand, neither evidence of existence nor proofs of impossibility have been provided for this particular setting. This might be in part ...

Broadcast encryption is conventionally formalized as broadcast encapsulation in which, instead of a cipher-text, a session key is produced, which is required to be indistinguishable from random. Such a scheme can provide public encryption functionality in combination with a symmetric encryption through the hybrid encryption paradigm. The boneh-gentry-waters scheme of 2005 proposed a broadcast scheme ...

Establishing secure channels is one of the most important areas of cryptographic research. Secure channels provide secrecy and authenticity for both communication parties. When parties can share secret information via a public communication channel, secure channels would be constructed on (symmetric key) encryptions and message authentication codes with the shared secret information called session keys. ...