@monkihard
How Does FHE Work?
At its core, FHE relies on the homomorphic properties of certain encryption schemes, meaning that specific algebraic operations on encrypted data correspond to equivalent operations on the plaintext. For example, if you encrypt the numbers 2 and 3 as Enc(2) and Enc(3), a homomorphic encryption scheme might allow you to compute Enc(2) + Enc(3) directly, yielding Enc(5) without ever revealing the underlying numbers. FHE extends this idea to support both addition and multiplication, enabling complex, arbitrary computations — even entire algorithms — on ciphertexts.
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