Collusion-resistant broadcast encryption based on hidden RSA subgroups

ePrint Report: Collusion-resistant broadcast encryption based on hidden RSA subgroups

Sigurd Eskeland

Public key broadcast encryption enables computations of ciphertexts, in which a single ciphertext is encrypted with regard to a set of recipients, and only the intended recipients can decrypt that ciphertext independently of each other and without interactions. A significant shortcoming of existing broadcast encryption schemes are long decryption keys comprising the public keys of pertaining recipients.
Decryption therefore necessitates access to public keys, which requires key management …

encryption eprint report hidden rsa