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Inco provides three types of decryption mechanisms:
  • Attested Decrypt for obtaining cryptographic proofs of decryption that can be submitted on-chain
  • Attested Compute for performing computations on encrypted data off-chain with attestation
  • Attested Reveal for decrypting data that has been made publicly accessible

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Attested Decrypt

Used when an authorized user needs a cryptographic proof of decryption that can be selectively revealed on-chain:
  1. User requests decryption attestation offchain (via wallet signature or session key)
  2. Client sends request with proof of authorization to decryption network
  3. The decryption network verifies ACL permissions
  4. Each decryption network node decrypts the value and creates a signed attestation
  5. User receives the decryption attestation containing the plaintext and signatures
  6. User can submit the attestation to a smart contract for on-chain verification and use

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Attested Compute

Used when you need to perform computations on encrypted data completely off-chain and get a decryption attestation:
  1. User requests computation attestation offchain (via wallet signature or session key)
  2. Client sends request with proof of authorization and computation operation to decryption network
  3. The decryption network verifies ACL permissions
  4. Each decryption network node performs the computation on the encrypted data and creates a signed attestation
  5. User receives the computation attestation containing the result and signatures
  6. User can submit the attestation to a smart contract for on-chain verification and use

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Attested Reveal

Used when data has been made publicly accessible and anyone can request decryption attestation:
  1. Data is made public using e.reveal() on-chain
  2. Anyone can request decryption attestation offchain
  3. The decryption network verifies the data has been revealed
  4. Each decryption network node decrypts the value and creates a signed attestation
  5. Requester receives the decryption attestation containing the plaintext and signatures
  6. Anyone can submit the attestation to a smart contract for on-chain verification and use