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This page covers the “decrypt → write tx” flow after you run decryptForTx: you take { ctHash, decryptedValue, signature } and submit a transaction that your contract can verify. There are two common patterns:
  • Publish: call FHE.publishDecryptResult(ctHash, plaintext, signature) so other contracts/users can reference the published result.
  • Verify-only: call FHE.verifyDecryptResult(ctHash, plaintext, signature) inside your contract without publishing globally.

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Prerequisites

  1. Run decryptForTx and get a result object with ctHash, decryptedValue, and signature.
  2. Ensure the Solidity parameter type matches your encrypted type.
decryptedValue is a bigint. If your Solidity function expects a smaller integer type (e.g. uint32), make sure the value is within range.

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Publish the decrypt result on-chain

The intended consumer of decryptForTx is an on-chain verifier such as FHE.publishDecryptResult(...). In practice, you publish the result by calling a function on your contract that invokes FHE.publishDecryptResult internally. 
import '@fhenixprotocol/cofhe-contracts/FHE.sol';

// Example wrapper (adjust plaintext/result type to match your encrypted type).
function publishDecryptResult(
  bytes32 ctHash,
  uint32 plaintext,
  bytes calldata signature
) external {
  FHE.publishDecryptResult(ctHash, plaintext, signature);
}

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Verify a decrypt result signature (without publishing)

Some protocols don’t need (or don’t want) to publish the decrypt result globally — they only need to verify that the provided plaintext and signature match a specific handle (ctHash). For example, an “unshield” flow can accept (ctHash, plaintext, signature) and only proceed if the signature is valid: 
import '@fhenixprotocol/cofhe-contracts/FHE.sol';

function unshield(
  bytes32 ctHash,
  uint32 plaintext,
  bytes calldata signature
) external {
  require(
    FHE.verifyDecryptResult(ctHash, plaintext, signature),
    'Invalid decrypt signature'
  );
  // ...continue with protocol logic...
}
If you prefer to publish the result (so it can be reused elsewhere), use FHE.publishDecryptResult(...) instead.