Can we realize the “dream” of IBE onchain ? Can we enable it in conjunction with others Identity Based solutions ?
Requirement: pairing curve !
We can do blind BLS signature, where the network (and smart contract) don’t know what it is signing and the signature can be revealed later on.
It’s simply the idea of Privacy Pass
With blind signatures, we can do some sort of rate limiting or access control, where the user asks for a blind signature on ... the identity of his choice ? And the user can redeem this signature to get access to a document or anything.
Being able to decentralize the PKG from identity based encryption scheme makes possible the secure usage of some attribute based schemes, based on pairings.
Usage:
https://medium.com/@dbkats/a-gentle-introduction-to-attribute-based-encryption-edca31744ac6