@ibrvhim
I've been curious about how
@zama combines FHE, MPC, and zk-PoK to enable confidential contracts on any blockchain or rollup, so I did some digging.
It turns out each has a distinct function:
→ FHE (Fully Homomorphic Encryption) - Enables operations on encrypted data, like a calculator working inside a locked box.
→ MPC (Threshold Multiparty Computing) - Secures the decryption key by splitting it among multiple parties, like pirates holding pieces of a treasure map.
→ zk-PoK (Zero-Knowledge Proof of Knowledge)- Proves that encrypted inputs are valid without revealing anything.
Here is how they all work together:
User Encrypts Their Data
• The user encrypts their input (say “100 tokens”) using Zama’s global FHE key.
• They also generate a zk-PoK — a proof that:
• They actually know what’s inside the encrypted data.
• It was encrypted correctly.
• This is sent to the blockchain gateway.
→ This ensures “no fake or broken inputs.”