Android에서 Firebase 전화번호 인증 시작하기

import com.google.firebase.pnv.FirebasePhoneNumberVerification

// Get an instance of the SDK.
val fpnv = FirebasePhoneNumberVerification.getInstance()

// Check all SIMs for support.
fpnv.getVerificationSupportInfo()
  .addOnSuccessListener { results ->
    if (results.any { it.isSupported() }) {
      // At least one SIM is supported; proceed with FPNV flow
    } else {
      // No SIMs are supported, so fall back to SMS verification.
    }
  }
  .addOnFailureListener { e ->
    // Handle error.
  }

// Get an instance of the SDK _with an Activity context_:
val fpnv = FirebasePhoneNumberVerification.getInstance(this@MainActivity)

// Call getVerifiedPhoneNumber
fpnv.getVerifiedPhoneNumber("https://example.com/privacy-policy")
  .addOnSuccessListener { result ->
    val phoneNumber = result.getPhoneNumber()
    val token = result.getToken()
    // Verification successful. Send token to your backend.
  }
  .addOnFailureListener { e ->
    // Handle failures, such as the user declining consent or a network error.
  }

import express from "express";
import { JwtVerifier } from "aws-jwt-verify";

// Find your Firebase project number in the Firebase console.
const FIREBASE_PROJECT_NUMBER = "123456789";

// The issuer and audience claims of the FPNV token are specific to your
// project.
const issuer = `https://fpnv.googleapis.com/projects/${FIREBASE_PROJECT_NUMBER}`;
const audience = `https://fpnv.googleapis.com/projects/${FIREBASE_PROJECT_NUMBER}`;

// The JWKS URL contains the current public signing keys for FPNV tokens.
const jwksUri = "https://fpnv.googleapis.com/v1beta/jwks";

// Configure a JWT verifier to check the following:
// - The token is signed by Google
// - The issuer and audience claims match your project
// - The token has not yet expired (default behavior)
const fpnvVerifier = JwtVerifier.create({ issuer, audience, jwksUri });

const app = express();

app.post('/verifiedPhoneNumber', async (req, res) => {
    if (!req.body) return res.sendStatus(400);
    // Get the token from the body of the request.
    const fpnvToken = req.body;
    try {
        // Attempt to verify the token using the verifier configured above.
        const verifiedPayload = await fpnvVerifier.verify(fpnvToken);

        // If verification succeeds, the subject claim of the token contains the
        // verified phone number. You can use this value however it's needed by
        // your app.
        const verifiedPhoneNumber = verifiedPayload.sub;
        // (Do something with it...)

        return res.sendStatus(200);
    } catch {
        // If verification fails, reject the token.
        return res.sendStatus(400);
    }
});

app.listen(3000);