I’m trying to authenticate user using passkey, at the VerifyAuthenticateResponse method, I faced an issue of no getting logged in, instead the server thrown this kind of error which I didn’t exepected. Firstly I thought, the data is stored in mongodb so let’s convert back to normal js format then too it didn’t work. The attribute passkey stored in mongodb is of type Mixed.

exports.loginVerification = async (req, res) => {
  try {
    const { username, credential } = req.body;
    if (!username || !credential) {
      return res.status(400).json({
        status: "fail",
        message: "Username and credential are required",
      });
    }

    const user = await User.findOne({ username }).select("-password");
    if (!user) {
      return res.status(404).json({
        status: "fail",
        message: "User not found",
      });
    }

    const challenge = await Challenge.findOne({ userId: user._id });
    if (!challenge) {
      return res.status(404).json({
        status: "fail",
        message: "Challenge not found",
      });
    }

    const userObject = user.toObject();
    const credentialId = userObject.passkey.credentialID;
    const credentialPublicKey = userObject.passkey.credentialPublicKey;
    const counter = userObject.passkey.counter;

    console.log({
      passkey: userObject.passkey,
    });

    const result = await verifyAuthenticationResponse({
      expectedOrigin: process.env.ORIGIN,
      expectedRPID: process.env.RP_ID,
      response: credential,
      expectedChallenge: challenge.challenge,
      authenticator: userObject.passkey,
    });

    console.log({ result });

    if (!result.verified) {
      return res.status(401).json({
        status: "fail",
        message: "Verification failed",
      });
    }

    res.status(200).json({
      status: "success",
      verified: result.verified,
      message: "Verification successful",
      user,
    });
  } catch (error) {
    console.log(error);
    res.status(400).json({
      status: "fail",
      message: error.message,
    });
  }
};

Getting an error as –

Error: No data
    at Object.decodePartialCBOR (D:fullstackpasskey-authenticationservernode_modules@levischucktiny-cborscriptcborcbor.js:355:15)
    at Object.decodeFirst (D:fullstackpasskey-authenticationservernode_modules@simplewebauthnserverscripthelpersisoisoCBOR.js:25:40)
    at decodeCredentialPublicKey (D:fullstackpasskey-authenticationservernode_modules@simplewebauthnserverscripthelpersdecodeCredentialPublicKey.js:6:84)
    at verifySignature (D:fullstackpasskey-authenticationservernode_modules@simplewebauthnserverscripthelpersverifySignature.js:20:86)
    at verifyAuthenticationResponse (D:fullstackpasskey-authenticationservernode_modules@simplewebauthnserverscriptauthenticationverifyAuthenticationResponse.js:157:66)
    at async exports.loginVerification (D:fullstackpasskey-authenticationservercontrollerschallenge.controller.js:182:20)

Response ouput

I was trying to finally authenticate the user but this issue came and I’m storing the data on mongodb.