Encryption is like waterproofing: it needs to be all or not at all. Just as it makes no sense to waterproof a left shoe and leave the right unprotected, encrypting the consumer component of a messaging app is pointless if content can later be decrypted on cloud servers.
It’s called
end-to-end encryption (E2EE) for a reason, but up until now many services claiming to utilize this technology have fallen woefully short. From an architectural perspective, E2EE is difficult to implement, particularly in applications that serve millions of users.
However, the emergence of a relatively new encryption technology is raising hope that E2EE may become a reality rather than an aspiration. Its name is
Fully Homomorphic Encryption (FHE) and its unique design makes it ideally suited to services that are reliant on true end-to-end encryption.
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