Account recovery module integration

[himanshugarg06]

Account recovery module is highly inspired by Vitalik's article https://vitalik.eth.limo/general/2021/01/11/recovery.html
which preserves the privacy of guardians.

In essence, three key components are required:

• UI components: For DApp developers to easily integrate account recovery, enabling users to send a link to their guardian to sign a message and complete registration.
• Recovery portal: For managing the recovery process.
• SDK/Transaction payload generation:
  i. Setting up recovery and enabling the module.
  ii. Executing the recovery operation (user operation).

Setting up the recovery process involves enabling the Account Recovery module and configuring it (using initForSmartAccount). Key elements include:

1. Who are my guardians : EOA public key → hash
2. Timeframe for each guardian : how long they are active.
3. Threshold: how many guardian sigs are required.
4. SecurityDelay: time that should pass after submitRecoveryRequest() to be executed.
5. How many recoveries are allowed.

// Guardian addresses to Guardian id/hash

export function makeHashToGetGuardianId(
  controlMessage: string,
  smartAccount: string
): Uint8Array {
  const messageHash = ethers.utils.solidityKeccak256(
    ["string", "address"],
    [controlMessage, smartAccount]
  );
  return ethers.utils.arrayify(messageHash);
}

//----------//


const messageHashBytes = ethers.utils.arrayify(
        makeHashToGetGuardianId(controlMessage, userSA.address)
      );


const guardians = await Promise.all(
     [alice, bob, charlie].map(
         async (guardian): Promise<string> =>
            ethers.utils.keccak256(await guardian.signMessage(messageHashBytes))
         )
      );

// where 
const controlMessage = "ACC_RECOVERY_SECURE_MSG"

// initForSmartAccount

const socialRecoverySetupData =
        accountRecoveryModule.interface.encodeFunctionData(
          "initForSmartAccount",
          [
            guardians,
            [
              [16741936496, 0],
              [16741936496, 0],
              [16741936496, 0],
            ],
            3,
            defaultSecurityDelay,
            defaultRecoveriesAllowed,
          ]
        );


// setUpAndEnableModule
// using account recovery module address and above

Testcase integration: https://github.com/bcnmy/scw-contracts/blob/develop/test/bundler-integration/module/AccountRecovery.Module.specs.ts#L175

Contract address: https://polygonscan.com/address/0x0000070c210e86261752e5b5656db4cff9b5f38b#code