Broadcast Encryption

Encrypting to a chosen subset of registered public keys, and the size and update cost of the keys and ciphertexts a scheme needs.

Status Statement Tags
Sublinear-Time CGKA Refresh
The source achieves worst-case sublinear communication with forward secrecy, but its refresh algorithms still run in time polynomial in the group size, and it leaves open, without committing to a specific target rate, whether sublinear-time refresh is achievable at all. 4 open
Broadcast EncryptionContinuous Group Key Agreementcharacterization
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