feat: remove compute provider from Enclave.sol

This commit removes Compute Provider from `Enclave.sol`, instead passing the `computeProviderParams` to the `E3Program.sol` and leaving it to that contract to validate the params and ultimately to coordinate with the Compute Provider.

packages/evm/contracts/Enclave.sol

@@ -1,12 +1,7 @@
 // SPDX-License-Identifier: LGPL-3.0-only
 pragma solidity >=0.8.27;
 
-import {
-    IEnclave,
-    E3,
-    IE3Program,
-    IComputeProvider
-} from "./interfaces/IEnclave.sol";
+import { IEnclave, E3, IE3Program } from "./interfaces/IEnclave.sol";
 import { ICiphernodeRegistry } from "./interfaces/ICiphernodeRegistry.sol";
 import { IInputValidator } from "./interfaces/IInputValidator.sol";
 import { IDecryptionVerifier } from "./interfaces/IDecryptionVerifier.sol";
@@ -33,19 +28,9 @@ contract Enclave is IEnclave, OwnableUpgradeable {
     uint256 public nexte3Id; // ID of the next E3.
     uint256 public requests; // total number of requests made to Enclave.
 
-    // TODO: should computation and compute providers be explicitly allowed?
-    // My intuition is that an allowlist is required since they impose slashing conditions.
-    // But perhaps this is one place where node pools might be utilized, allowing nodes to
-    // opt in to being selected for specific computations, along with the corresponding slashing conditions.
-    // This would reduce the governance overhead for Enclave.
-
     // Mapping of allowed E3 Programs.
     mapping(IE3Program e3Program => bool allowed) public e3Programs;
 
-    // Mapping of allowed compute providers.
-    mapping(IComputeProvider computeProvider => bool allowed)
-        public computeProviders;
-
     // Mapping of E3s.
     mapping(uint256 e3Id => E3 e3) public e3s;
 
@@ -72,8 +57,10 @@ contract Enclave is IEnclave, OwnableUpgradeable {
     error ModuleNotEnabled(address module);
     error InputDeadlinePassed(uint256 e3Id, uint256 expiration);
     error InputDeadlineNotPassed(uint256 e3Id, uint256 expiration);
-    error InvalidComputation();
-    error InvalidComputeProviderSetup();
+    error InvalidComputationRequest(
+        IInputValidator inputValidator,
+        IDecryptionVerifier decryptionVerifier
+    );
     error InvalidCiphernodeRegistry(ICiphernodeRegistry ciphernodeRegistry);
     error InvalidInput();
     error InvalidDuration(uint256 duration);
@@ -127,7 +114,6 @@ contract Enclave is IEnclave, OwnableUpgradeable {
         uint256 duration,
         IE3Program e3Program,
         bytes memory e3ProgramParams,
-        IComputeProvider computeProvider,
         bytes memory computeProviderParams
     ) external payable returns (uint256 e3Id, E3 memory e3) {
         // TODO: allow for other payment methods or only native tokens?
@@ -148,33 +134,25 @@ contract Enclave is IEnclave, OwnableUpgradeable {
             InvalidDuration(duration)
         );
         require(e3Programs[e3Program], E3ProgramNotAllowed(e3Program));
-        require(
-            computeProviders[computeProvider],
-            ModuleNotEnabled(address(computeProvider))
-        );
 
         // TODO: should IDs be incremental or produced deterministically?
         e3Id = nexte3Id;
         nexte3Id++;
         uint256 seed = uint256(keccak256(abi.encode(block.prevrandao, e3Id)));
 
-        IInputValidator inputValidator = e3Program.validate(
-            e3Id,
-            seed,
-            e3ProgramParams
-        );
-        require(address(inputValidator) != address(0), InvalidComputation());
-
-        // TODO: validate that the requested computation can be performed by the given compute provider.
-        // Perhaps the compute provider should be returned by the E3 Program?
-        IDecryptionVerifier decryptionVerifier = computeProvider.validate(
-            e3Id,
-            seed,
-            computeProviderParams
-        );
+        (
+            IInputValidator inputValidator,
+            IDecryptionVerifier decryptionVerifier
+        ) = e3Program.validate(
+                e3Id,
+                seed,
+                e3ProgramParams,
+                computeProviderParams
+            );
         require(
-            address(decryptionVerifier) != address(0),
-            InvalidComputeProviderSetup()
+            address(inputValidator) != address(0) &&
+                address(decryptionVerifier) != address(0),
+            InvalidComputationRequest(inputValidator, decryptionVerifier)
         );
 
         e3 = E3({
@@ -186,7 +164,6 @@ contract Enclave is IEnclave, OwnableUpgradeable {
             e3Program: e3Program,
             e3ProgramParams: e3ProgramParams,
             inputValidator: inputValidator,
-            computeProvider: computeProvider,
             decryptionVerifier: decryptionVerifier,
             committeePublicKey: hex"",
             ciphertextOutput: hex"",
@@ -199,7 +176,7 @@ contract Enclave is IEnclave, OwnableUpgradeable {
             CommitteeSelectionFailed()
         );
 
-        emit E3Requested(e3Id, e3s[e3Id], filter, e3Program, computeProvider);
+        emit E3Requested(e3Id, e3s[e3Id], filter, e3Program);
     }
 
     function activate(uint256 e3Id) external returns (bool success) {
@@ -336,18 +313,6 @@ contract Enclave is IEnclave, OwnableUpgradeable {
         emit E3ProgramEnabled(e3Program);
     }
 
-    function enableComputeProvider(
-        IComputeProvider computeProvider
-    ) public onlyOwner returns (bool success) {
-        require(
-            !computeProviders[computeProvider],
-            ModuleAlreadyEnabled(address(computeProvider))
-        );
-        computeProviders[computeProvider] = true;
-        success = true;
-        emit ComputeProviderEnabled(computeProvider);
-    }
-
     function disableE3Program(
         IE3Program e3Program
     ) public onlyOwner returns (bool success) {
@@ -357,18 +322,6 @@ contract Enclave is IEnclave, OwnableUpgradeable {
         emit E3ProgramDisabled(e3Program);
     }
 
-    function disableComputeProvider(
-        IComputeProvider computeProvider
-    ) public onlyOwner returns (bool success) {
-        require(
-            computeProviders[computeProvider],
-            ModuleNotEnabled(address(computeProvider))
-        );
-        delete computeProviders[computeProvider];
-        success = true;
-        emit ComputeProviderDisabled(computeProvider);
-    }
-
     ////////////////////////////////////////////////////////////
     //                                                        //
     //                   Get Functions                        //

packages/evm/contracts/interfaces/IE3.sol

@@ -28,7 +28,6 @@ struct E3 {
     IE3Program e3Program;
     bytes e3ProgramParams;
     IInputValidator inputValidator;
-    IComputeProvider computeProvider;
     IDecryptionVerifier decryptionVerifier;
     bytes committeePublicKey;
     bytes ciphertextOutput;

packages/evm/contracts/interfaces/IE3Program.sol

@@ -2,18 +2,27 @@
 pragma solidity >=0.8.27;
 
 import { IInputValidator } from "./IInputValidator.sol";
+import { IDecryptionVerifier } from "./IDecryptionVerifier.sol";
 
 interface IE3Program {
     /// @notice This function should be called by the Enclave contract to validate the computation parameters.
     /// @param e3Id ID of the E3.
     /// @param seed Seed for the computation.
-    /// @param params ABI encoded computation parameters.
+    /// @param e3ProgramParams ABI encoded computation parameters.
+    /// @param computeProviderParams ABI encoded compute provider parameters.
     /// @return inputValidator The input validator to be used for the computation.
+    /// @return decryptionVerifier The decryption verifier to be used for the computation.
     function validate(
         uint256 e3Id,
         uint256 seed,
-        bytes calldata params
-    ) external returns (IInputValidator inputValidator);
+        bytes calldata e3ProgramParams,
+        bytes calldata computeProviderParams
+    )
+        external
+        returns (
+            IInputValidator inputValidator,
+            IDecryptionVerifier decryptionVerifier
+        );
 
     /// @notice This function should be called by the Enclave contract to verify the decrypted output of an E3.
     /// @param e3Id ID of the E3.

packages/evm/contracts/interfaces/IEnclave.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: LGPL-3.0-only
 pragma solidity >=0.8.27;
 
-import { E3, IE3Program, IComputeProvider } from "./IE3.sol";
+import { E3, IE3Program } from "./IE3.sol";
 
 interface IEnclave {
     ////////////////////////////////////////////////////////////
@@ -15,13 +15,11 @@ interface IEnclave {
     /// @param e3 Details of the E3.
     /// @param filter Address of the pool of nodes from which the Cipher Node committee was selected.
     /// @param e3Program Address of the Computation module selected.
-    /// @param computeProvider  Address of the compute provider selected.
     event E3Requested(
         uint256 e3Id,
         E3 e3,
         address filter,
-        IE3Program indexed e3Program,
-        IComputeProvider indexed computeProvider
+        IE3Program indexed e3Program
     );
 
     /// @notice This event MUST be emitted when an Encrypted Execution Environment (E3) is successfully activated.
@@ -76,14 +74,6 @@ interface IEnclave {
     /// @param e3Program The address of the E3 Program.
     event E3ProgramDisabled(IE3Program e3Program);
 
-    /// @notice This event MUST be emitted any time an compute provider is enabled.
-    /// @param computeProvider The address of the compute provider.
-    event ComputeProviderEnabled(IComputeProvider computeProvider);
-
-    /// @notice This event MUST be emitted any time an compute provider is disabled.
-    /// @param computeProvider The address of the compute provider.
-    event ComputeProviderDisabled(IComputeProvider computeProvider);
-
     ////////////////////////////////////////////////////////////
     //                                                        //
     //                  Core Entrypoints                      //
@@ -97,7 +87,6 @@ interface IEnclave {
     /// @param duration The duration of the computation in seconds.
     /// @param e3Program Address of the E3 Program.
     /// @param e3ProgramParams ABI encoded computation parameters.
-    /// @param computeProvider Address of the compute provider.
     /// @param computeProviderParams ABI encoded compute provider parameters.
     /// @return e3Id ID of the E3.
     /// @return e3 The E3 struct.
@@ -108,7 +97,6 @@ interface IEnclave {
         uint256 duration,
         IE3Program e3Program,
         bytes memory e3ProgramParams,
-        IComputeProvider computeProvider,
         bytes memory computeProviderParams
     ) external payable returns (uint256 e3Id, E3 memory e3);
 

packages/evm/contracts/test/MockE3Program.sol

@@ -1,20 +1,36 @@
 // SPDX-License-Identifier: LGPL-3.0-only
 pragma solidity >=0.8.27;
 
-import { IE3Program, IInputValidator } from "../interfaces/IE3Program.sol";
+import {
+    IE3Program,
+    IInputValidator,
+    IDecryptionVerifier
+} from "../interfaces/IE3Program.sol";
 
 contract MockE3Program is IE3Program {
-    error invalidParams(bytes params);
+    error invalidParams(bytes e3ProgramParams, bytes computeProviderParams);
 
     function validate(
         uint256,
         uint256,
-        bytes memory params
-    ) external pure returns (IInputValidator inputValidator) {
-        require(params.length == 32, "invalid params");
+        bytes memory e3ProgramParams,
+        bytes memory computeProviderParams
+    )
+        external
+        pure
+        returns (
+            IInputValidator inputValidator,
+            IDecryptionVerifier decryptionVerifier
+        )
+    {
+        require(
+            e3ProgramParams.length == 32 && computeProviderParams.length == 32,
+            invalidParams(e3ProgramParams, computeProviderParams)
+        );
         // solhint-disable no-inline-assembly
         assembly {
-            inputValidator := mload(add(params, 32))
+            inputValidator := mload(add(e3ProgramParams, 32))
+            decryptionVerifier := mload(add(computeProviderParams, 32))
         }
     }