Fully homomorphic encryption and the dawn of a private internet

10 months ago

Fully Homomorphic Encryption (FHE) enables computations on encrypted data without decryption, ensuring privacy.
FHE addresses the 'Achilles’ heel' of modern security by keeping data encrypted even during processing (in-use).
Current FHE implementations are slow (1,000x to 10,000x overhead) and produce large ciphertexts (40x to 1,000x larger than plaintext).
FHE performance is improving rapidly, with algorithms getting 8x faster each year, making it practical for more applications.
Key applications of FHE include encrypted cloud computing, encrypted LLM inference, and confidential blockchain smart contracts.
FHE uses lattice-based cryptography, which is believed to be quantum-resistant, making it future-proof against quantum computing threats.
Noise management and bootstrapping are critical to FHE, allowing unlimited computations by periodically reducing noise in ciphertexts.
FHE could revolutionize privacy on the internet, shifting from 'spy by default' to 'privacy by default' by keeping data encrypted at all times.

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