Merge pull request #84 from zk-passport/android-witnesscalc

Moving to PolygonID's stack on Android
2026-04-27 03:01:15 -04:00 · 2024-05-12 19:34:07 +09:00
parent 3b79f513bf 1306d2e46a
commit 1be9b1880d
9 changed files with 248 additions and 162 deletions
--- a/app/App.tsx
+++ b/app/App.tsx
@@ -19,7 +19,7 @@ import { YStack } from 'tamagui';
 import { prove } from './src/utils/prover';
 import { useToastController } from '@tamagui/toast';
 import * as amplitude from '@amplitude/analytics-react-native';
-import { checkForZkey } from './src/utils/zkeyDownload';
+import { downloadZkey, IsZkeyDownloading, ShowWarningModalProps } from './src/utils/zkeyDownload';
 import RNFS from 'react-native-fs';
 global.Buffer = Buffer;

@@ -40,8 +40,16 @@ function App(): JSX.Element {
  const [proof, setProof] = useState<Proof | null>(null);
  const [mintText, setMintText] = useState<string>("");
  const [majority, setMajority] = useState<number>(18);
-  const [zkeydownloadStatus, setDownloadStatus] = useState<"not_started" | "downloading" | "completed" | "error">("not_started");
-  const [showWarning, setShowWarning] = useState(false);
+  const [isZkeyDownloading, setIsZkeyDownloading] = useState<IsZkeyDownloading>({
+    register_sha256WithRSAEncryption_65537: false,
+    disclose: false,
+    proof_of_passport: false,
+  });
+  const [showWarningModal, setShowWarningModal] = useState<ShowWarningModalProps>({
+    show: false,
+    circuit: "",
+    size: 0,
+  });

  const [disclosure, setDisclosure] = useState({
    issuing_state: false,
@@ -65,12 +73,16 @@ function App(): JSX.Element {
  };

  useEffect(() => {
-    checkForZkey({
-      setDownloadStatus,
-      setShowWarning,
-      toast
-    })
    amplitude.init(AMPLITUDE_KEY);
+    // downloadZkey("register_sha256WithRSAEncryption_65537"); // temporary, might move after nfc scanning
+    // downloadZkey("disclose");
+    downloadZkey(
+      "proof_of_passport",
+      isZkeyDownloading,
+      setIsZkeyDownloading,
+      setShowWarningModal,
+      toast
+    );
  }, []);

  const handleStartCameraScan = async () => {
@@ -144,10 +156,10 @@ function App(): JSX.Element {
          setDateOfExpiry={setDateOfExpiry}
          majority={majority}
          setMajority={setMajority}
-          zkeydownloadStatus={zkeydownloadStatus}
-          showWarning={showWarning}
-          setShowWarning={setShowWarning}
-          setDownloadStatus={setDownloadStatus}
+          isZkeyDownloading={isZkeyDownloading}
+          showWarningModal={showWarningModal}
+          setShowWarningModal={setShowWarningModal}
+          setIsZkeyDownloading={setIsZkeyDownloading}
        />
      </YStack>
    </YStack>
--- a/app/src/screens/MainScreen.tsx
+++ b/app/src/screens/MainScreen.tsx
@@ -1,4 +1,4 @@
-import React, { useState, useEffect, Profiler } from 'react';
+import React, { useState, useEffect } from 'react';
 import { YStack, XStack, Text, Button, Tabs, Sheet, Label, Fieldset, Input, Switch, H2, Image, useWindowDimensions, H4, H3, ScrollView } from 'tamagui'
 import { HelpCircle, IterationCw, VenetianMask, Cog, CheckCircle2, ExternalLink } from '@tamagui/lucide-icons';
 import X from '../images/x.png'
@@ -17,7 +17,7 @@ import { bgColor, blueColorLight, borderColor, componentBgColor, textColor1, tex
 import MintScreen from './MintScreen';
 import { ToastViewport, useToastController } from '@tamagui/toast';
 import { ToastMessage } from '../components/ToastMessage';
-import { downloadZkey } from '../utils/zkeyDownload';
+import { CircuitName, fetchZkey, IsZkeyDownloading, ShowWarningModalProps } from '../utils/zkeyDownload';

 interface MainScreenProps {
  onStartCameraScan: () => void;
@@ -43,10 +43,10 @@ interface MainScreenProps {
  setDateOfExpiry: (date: string) => void;
  majority: number;
  setMajority: (age: number) => void;
-  zkeydownloadStatus: string;
-  showWarning: boolean;
-  setShowWarning: (value: boolean) => void;
-  setDownloadStatus: (value: "not_started" | "downloading" | "completed" | "error") => void;
+  isZkeyDownloading: IsZkeyDownloading;
+  showWarningModal: ShowWarningModalProps;
+  setShowWarningModal: (value: ShowWarningModalProps) => void;
+  setIsZkeyDownloading: (value: IsZkeyDownloading) => void;
 }

 const MainScreen: React.FC<MainScreenProps> = ({
@@ -73,10 +73,10 @@ const MainScreen: React.FC<MainScreenProps> = ({
  setDateOfExpiry,
  majority,
  setMajority,
-  zkeydownloadStatus,
-  showWarning,
-  setShowWarning,
-  setDownloadStatus
+  isZkeyDownloading,
+  showWarningModal,
+  setShowWarningModal,
+  setIsZkeyDownloading
 }) => {
  const [NFCScanIsOpen, setNFCScanIsOpen] = useState(false);
  const [SettingsIsOpen, setSettingsIsOpen] = useState(false);
@@ -442,7 +442,9 @@ const MainScreen: React.FC<MainScreenProps> = ({
              setEns={setEns}
              majority={majority}
              setMajority={setMajority}
-              zkeydownloadStatus={zkeydownloadStatus}
+              isZkeyDownloading={isZkeyDownloading}
+              setIsZkeyDownloading={setIsZkeyDownloading}
+              setShowWarningModal={setShowWarningModal}
            />
          </Tabs.Content>
          <Tabs.Content value="mint" f={1}>
@@ -457,20 +459,26 @@ const MainScreen: React.FC<MainScreenProps> = ({
          </Tabs.Content>
        </Tabs>
      </YStack>
-      <Modal visible={showWarning} animationType="slide" transparent={true}>
+      <Modal visible={showWarningModal.show} animationType="slide" transparent={true}>
        <YStack bc="#161616" p={20} ai="center" jc="center" position="absolute" top={0} bottom={0} left={0} right={0}>
          <YStack bc="#343434" p={20} borderRadius={10} ai="center" jc="center">
            <Text fontWeight="bold" fontSize={18} color="#a0a0a0">👋 Hi</Text>
            <Text mt={10} textAlign="center" color="#a0a0a0">
-              The app needs to download a large file (300MB). Please make sure you're connected to a Wi-Fi network before continuing.
+              The app needs to download a large file ({(showWarningModal.size / 1024 / 1024).toFixed(2)}MB). Please make sure you're connected to a Wi-Fi network before continuing.
            </Text>
            <XStack mt={20}>
              <Button onPress={() => {
-                downloadZkey(
-                  setDownloadStatus,
+                fetchZkey(
+                  showWarningModal.circuit as CircuitName,
+                  isZkeyDownloading,
+                  setIsZkeyDownloading,
                  toast
                );
-                setShowWarning(false)
+                setShowWarningModal({
+                  show: false,
+                  circuit: '',
+                  size: 0,
+                })
              }} bc="#4caf50" borderRadius={5} padding={10}>
                <Text color="#ffffff">Continue</Text>
              </Button>
--- a/app/src/screens/ProveScreen.tsx
+++ b/app/src/screens/ProveScreen.tsx
@@ -12,7 +12,7 @@ import { useToastController } from '@tamagui/toast'
 import { ethers } from 'ethers';
 import { Platform } from 'react-native';
 import { formatAttribute } from '../utils/utils';
-import { Proof } from '../../../common/src/utils/types';
+import { downloadZkey, IsZkeyDownloading, ShowWarningModalProps } from '../utils/zkeyDownload';

 interface ProveScreenProps {
  selectedApp: App | null;
@@ -28,7 +28,9 @@ interface ProveScreenProps {
  setEns: (ens: string) => void;
  majority: number;
  setMajority: (age: number) => void;
-  zkeydownloadStatus: string;
+  isZkeyDownloading: IsZkeyDownloading;
+  setIsZkeyDownloading: (value: IsZkeyDownloading) => void;
+  setShowWarningModal: (value: ShowWarningModalProps) => void;
 }

 const ProveScreen: React.FC<ProveScreenProps> = ({
@@ -45,13 +47,33 @@ const ProveScreen: React.FC<ProveScreenProps> = ({
  setEns,
  majority,
  setMajority,
-  zkeydownloadStatus
+  isZkeyDownloading,
+  setIsZkeyDownloading,
+  setShowWarningModal
 }) => {
  const { height } = useWindowDimensions();
  const [inputValue, setInputValue] = useState(DEFAULT_ADDRESS ?? '');
  const provider = new ethers.JsonRpcProvider(`https://eth-mainnet.g.alchemy.com/v2/lpOn3k6Fezetn1e5QF-iEsn-J0C6oGE0`);
  const toast = useToastController()
+  const circuit = "proof_of_passport" //later, pass this as input

+  useEffect(() => {
+    launchZkeyDownloadIfRequired();
+
+  }, [])
+
+  async function launchZkeyDownloadIfRequired() {
+    if (!isZkeyDownloading[circuit]) {
+      // this already checks if downloading is required
+      downloadZkey(
+        circuit,
+        isZkeyDownloading,
+        setIsZkeyDownloading,
+        setShowWarningModal,
+        toast
+      );
+    }
+  }

  useEffect(() => {
    if (ens != '' && inputValue == '') {
@@ -236,7 +258,7 @@ const ProveScreen: React.FC<ProveScreenProps> = ({
          </YStack >
        </YStack >
        <Button
-          disabled={zkeydownloadStatus != "completed" || (address == ethers.ZeroAddress)}
+          disabled={isZkeyDownloading[circuit] || (address == ethers.ZeroAddress)}
          borderWidth={1.3}
          borderColor={borderColor}
          borderRadius={100}
@@ -245,20 +267,13 @@ const ProveScreen: React.FC<ProveScreenProps> = ({
          backgroundColor={address == ethers.ZeroAddress ? "#cecece" : "#3185FC"}
          alignSelf='center'
        >
-          {zkeydownloadStatus === "downloading" ? (
+          {isZkeyDownloading[circuit] ? (
            <XStack ai="center" gap="$1">
              <Spinner />
              <Text color={textColor1} fow="bold">
                Downloading ZK proving key
              </Text>
            </XStack>
-          ) : zkeydownloadStatus === "error" ? (
-            <XStack ai="center" gap="$1">
-              <Spinner />
-              <Text color={textColor1} fow="bold">
-                Error downloading ZK proving key
-              </Text>
-            </XStack>
          ) : generatingProof ? (
            <XStack ai="center" gap="$1">
              <Spinner />
@@ -278,7 +293,6 @@ const ProveScreen: React.FC<ProveScreenProps> = ({
        </Button>
        {(height > 750) && <Text fontSize={10} color={generatingProof ? "#a0a0a0" : "#161616"} py="$2" alignSelf='center'>This operation can take up to 2 mn, phone may freeze during this time</Text>}
      </YStack >
-
    </YStack >
  );
 };
--- a/app/src/utils/minter.ts
+++ b/app/src/utils/minter.ts
@@ -4,7 +4,7 @@ import groth16ExportSolidityCallData from '../../utils/snarkjs';
 import contractAddresses from "../../deployments/addresses.json";
 import proofOfPassportArtefact from "../../deployments/ProofOfPassport.json";
 import { Steps } from './utils';
-import { AWS_ENDPOINT } from '../../../common/src/constants/constants';
+import { RELAYER_URL } from '../../../common/src/constants/constants';
 import { Proof } from "../../../common/src/utils/types";

 interface MinterProps {
@@ -42,7 +42,7 @@ export const mint = async ({ proof, setStep, setMintText, toast }: MinterProps)
      .mint.populateTransaction(...callData);
    console.log('transactionRequest', transactionRequest);

-    const response = await axios.post(AWS_ENDPOINT, {
+    const response = await axios.post(RELAYER_URL, {
      chain: "sepolia",
      tx_data: transactionRequest
    });
--- a/app/src/utils/prover.ts
+++ b/app/src/utils/prover.ts
@@ -1,7 +1,7 @@
 import { NativeModules, Platform } from 'react-native';
 import { revealBitmapFromMapping } from '../../../common/src/utils/revealBitmap';
 import { generateCircuitInputs } from '../../../common/src/utils/generateInputs';
-import { Steps } from './utils';
+import { parseProofAndroid, Steps } from './utils';
 import { PassportData, Proof } from '../../../common/src/utils/types';
 import * as amplitude from '@amplitude/analytics-react-native';
 import RNFS from 'react-native-fs';
@@ -14,7 +14,7 @@ interface ProverProps {
  setStep: (value: number) => void;
  setGeneratingProof: (value: boolean) => void;
  setProofTime: (value: number) => void;
-  setProof: (value: Proof | null) => void;
+  setProof: (proof: Proof) => void;
  toast: any
 }

@@ -128,24 +128,4 @@ const generateProof = async (
  } catch (err: any) {
    console.log('err', err);
  }
-};
-
-const parseProofAndroid = (response: string) => {
-  const match = response.match(/ZkProof\(proof=Proof\(pi_a=\[(.*?)\], pi_b=\[\[(.*?)\], \[(.*?)\], \[1, 0\]\], pi_c=\[(.*?)\], protocol=groth16, curve=bn128\), pub_signals=\[(.*?)\]\)/);
-
-  if (!match) throw new Error('Invalid input format');
-
-  const [, pi_a, pi_b_1, pi_b_2, pi_c, pub_signals] = match;
-
-  return {
-    proof: {
-      a: pi_a.split(',').map((n: string) => n.trim()),
-      b: [
-        pi_b_1.split(',').map((n: string) => n.trim()),
-        pi_b_2.split(',').map((n: string) => n.trim()),
-      ],
-      c: pi_c.split(',').map((n: string) => n.trim()),
-    },
-    pub_signals: pub_signals.split(',').map((n: string) => n.trim())
-  } as Proof;
 };
--- a/app/src/utils/utils.ts
+++ b/app/src/utils/utils.ts
@@ -1,6 +1,7 @@
 // Function to extract information from a two-line MRZ.

 import { countryCodes } from "../../../common/src/constants/constants";
+import { Proof } from "../../../common/src/utils/types";

 // The actual parsing would depend on the standard being used (TD1, TD2, TD3, MRVA, MRVB).
 export function extractMRZInfo(mrzString: string) {
@@ -54,4 +55,24 @@ export function formatAttribute(key: string, attribute: string) {
    return countryCodes[attribute as keyof typeof countryCodes]
  }
  return attribute;
-}
+}
+
+export const parseProofAndroid = (response: string) => {
+  const match = response.match(/ZkProof\(proof=Proof\(pi_a=\[(.*?)\], pi_b=\[\[(.*?)\], \[(.*?)\], \[1, 0\]\], pi_c=\[(.*?)\], protocol=groth16, curve=bn128\), pub_signals=\[(.*?)\]\)/);
+
+  if (!match) throw new Error('Invalid input format');
+
+  const [, pi_a, pi_b_1, pi_b_2, pi_c, pub_signals] = match;
+
+  return {
+    proof: {
+      a: pi_a.split(',').map((n: string) => n.trim()),
+      b: [
+        pi_b_1.split(',').map((n: string) => n.trim()),
+        pi_b_2.split(',').map((n: string) => n.trim()),
+      ],
+      c: pi_c.split(',').map((n: string) => n.trim()),
+    },
+    pub_signals: pub_signals.split(',').map((n: string) => n.trim())
+  } as Proof;
+};
--- a/app/src/utils/zkeyDownload.ts
+++ b/app/src/utils/zkeyDownload.ts
@@ -1,81 +1,186 @@
-import {
-  NativeModules,
-  Platform,
-} from 'react-native';
 import RNFS from 'react-native-fs';
-import { ARKZKEY_URL, ZKEY_NAME, ZKEY_URL } from '../../../common/src/constants/constants';
 import * as amplitude from '@amplitude/analytics-react-native';
 import NetInfo from '@react-native-community/netinfo';
 import axios from 'axios';
 import { unzip } from 'react-native-zip-archive';

-const localZkeyPath = RNFS.DocumentDirectoryPath + '/proof_of_passport.zkey';
-const localZipPath = RNFS.DocumentDirectoryPath + '/proof_of_passport.zip';
-const localUrlPath = RNFS.DocumentDirectoryPath + '/zkey_url.txt';
+// this should not change, instead update the zkey on the bucket
+const zkeyZipUrls = {
+  register_sha256WithRSAEncryption_65537: "qweqwe",
+  disclose: "qweqwe",
+  proof_of_passport: `https://d8o9bercqupgk.cloudfront.net/proof_of_passport.zkey.zip`,
+};

-async function initMopro() {
-  if (Platform.OS === 'android') {
-    const res = await NativeModules.Prover.runInitAction()
-    console.log('Mopro init res:', res)
-  }
+export type CircuitName = keyof typeof zkeyZipUrls;
+
+export type ShowWarningModalProps = {
+  show: boolean,
+  circuit: CircuitName | "",
+  size: number,
 }

+export type IsZkeyDownloading = {
+  [circuit in CircuitName]: boolean;
+}
+
+// each time we download a zkey, we store the size of the zip file in a file named <circuit_name>_zip_size.txt
+// we assume a new zkey zip will always have a different size
+
+// the downloadZkey function downloads a zkey if either:
+// 1. the zkey file does not exist
+// 2. <circuit_name>_zip_size.txt does not show the same size as the server response (zkey is outdated)
+// 3. the zkey is currently downloading
+// 4. the commitment is already registered and the function is called for a register zkey. If it's the case, there is no need to download the latest zkey.
+// => this should be fine is the function is never called after the commitment is registered.
+
 export async function downloadZkey(
-  setDownloadStatus: (value:  "not_started" | "downloading" | "completed" | "error") => void,
+  circuit: CircuitName,
+  isZkeyDownloading: IsZkeyDownloading,
+  setIsZkeyDownloading: (value: IsZkeyDownloading) => void,
+  setShowWarningModal: (value: ShowWarningModalProps) => void,
  toast: any
 ) {
-  console.log('launching zkey download')
-  setDownloadStatus('downloading');
-  amplitude.track('Downloading zkey...');
+    const downloadRequired = await isDownloadRequired(circuit, isZkeyDownloading);
+    if (!downloadRequired) {
+      console.log(`zkey for ${circuit} already downloaded`)
+      amplitude.track(`zkey for ${circuit} already downloaded`);
+      return;
+    }
+
+    const networkInfo = await NetInfo.fetch();
+    console.log('Network type:', networkInfo.type)
+    if (networkInfo.type === 'wifi') {
+      fetchZkey(
+        circuit,
+        isZkeyDownloading,
+        setIsZkeyDownloading,
+        toast
+      );
+    } else {
+      setShowWarningModal({
+        show: true,
+        circuit: circuit,
+        size: 0,
+      });
+    }
+}
+
+export async function isDownloadRequired(
+  circuit: CircuitName,
+  isZkeyDownloading: IsZkeyDownloading
+) {
+  if (isZkeyDownloading[circuit]) {
+    return false;
+  }
+
+  const fileExists = await RNFS.exists(`${RNFS.DocumentDirectoryPath}/${circuit}.zkey`);
+  if (!fileExists) {
+    return true;
+  }
+
+  let storedZipSize = 0;
+  try {
+    storedZipSize = Number(await RNFS.readFile(`${RNFS.DocumentDirectoryPath}/${circuit}_zip_size.txt`, 'utf8'));
+  } catch (error) {
+    console.log(`${circuit}_zip_size.txt file not found, so assuming zkey is outdated.`);
+    return true;
+  }
+
+  console.log('storedZipSize:', storedZipSize)
+
+  const response = await axios.head(zkeyZipUrls[circuit]);
+  const expectedSize = parseInt(response.headers['content-length'], 10);
+
+  console.log('expectedSize:', expectedSize)
+  
+  const isZipComplete = storedZipSize === expectedSize;
+
+  console.log('isZipComplete:', isZipComplete)
+
+  if (!isZipComplete) {
+    return true;
+  }
+  return false
+}
+
+export async function fetchZkey(
+  circuit: CircuitName,
+  isZkeyDownloading: IsZkeyDownloading,
+  setIsZkeyDownloading: (value: IsZkeyDownloading) => void,
+  toast: any
+) {
+  console.log(`fetching zkey for ${circuit} ...`)
+  amplitude.track(`fetching zkey for ${circuit} ...`);
+
+  setIsZkeyDownloading({
+    ...isZkeyDownloading,
+    [circuit]: true,
+  });
+
  const startTime = Date.now();
-
-  const url = Platform.OS === 'android' ? ARKZKEY_URL : ZKEY_URL
-
  let previousPercentComplete = -1;
-
  const options = {
-    fromUrl: url,
-    toFile: localZipPath,
+    fromUrl: zkeyZipUrls[circuit],
+    toFile: `${RNFS.DocumentDirectoryPath}/${circuit}.zkey.zip`,
    background: true,
    begin: () => {
      console.log('Download has begun');
    },
    progress: (res: any) => {
      const percentComplete = Math.floor((res.bytesWritten / res.contentLength) * 100);
-      if (percentComplete !== previousPercentComplete) {
+      if (percentComplete % 5 === 0 && percentComplete !== previousPercentComplete) {
        console.log(`${percentComplete}%`);
        previousPercentComplete = percentComplete;
      }
-    },
+    }
  };

  RNFS.downloadFile(options).promise
    .then(async () => {
      console.log('Download complete');
+
      RNFS.readDir(RNFS.DocumentDirectoryPath)
        .then((result) => {
-          console.log('Directory contents before:', result);
+          console.log('Directory contents before unzipping:', result);
        })

-      const unzipPath = RNFS.DocumentDirectoryPath;
-      await unzip(localZipPath, unzipPath);
-      const oldPath = `${unzipPath}/${ZKEY_NAME}${Platform.OS === 'android' ? '.arkzkey' : '.zkey'}`;
-      const newPath = `${unzipPath}/proof_of_passport.zkey`;
-      await RNFS.moveFile(oldPath, newPath);
+      await unzip(`${RNFS.DocumentDirectoryPath}/${circuit}.zkey.zip`, RNFS.DocumentDirectoryPath);
+
      RNFS.readDir(RNFS.DocumentDirectoryPath)
      .then((result) => {
-        console.log('Directory contents after:', result);
+        console.log('Directory contents after unzipping:', result);
      })
      console.log('Unzip complete');
-      setDownloadStatus('completed')
-      const endTime = Date.now();
-      amplitude.track('zkey download succeeded, took ' + ((endTime - startTime) / 1000) + ' seconds');
-      RNFS.writeFile(localUrlPath, url, 'utf8');
-      initMopro()
+      setIsZkeyDownloading({
+        ...isZkeyDownloading,
+        [circuit]: false,
+      });
+
+      amplitude.track('zkey download succeeded, took ' + ((Date.now() - startTime) / 1000) + ' seconds');
+
+      const zipSize = await RNFS.stat(`${RNFS.DocumentDirectoryPath}/${circuit}.zkey.zip`);
+
+      console.log('zipSize:', zipSize.size);
+
+      RNFS.writeFile(`${RNFS.DocumentDirectoryPath}/${circuit}_zip_size.txt`, zipSize.size.toString(), 'utf8');
+
+      console.log('zip size written to file');
+
+      // delete the zip file
+      RNFS.unlink(`${RNFS.DocumentDirectoryPath}/${circuit}.zkey.zip`)
+        .then(() => {
+          console.log('zip file deleted');
+        })
+        .catch((error) => {
+          console.error(error);
+        });
    })
    .catch((error) => {
      console.error(error);
-      setDownloadStatus('error');
+      setIsZkeyDownloading({
+        ...isZkeyDownloading,
+        [circuit]: false,
+      });
      amplitude.track('zkey download failed: ' + error.message);
      toast.show('Error', {
        message: `Error: ${error.message}`,
@@ -84,55 +189,4 @@ export async function downloadZkey(
        },
      });
    });
-}
-
-interface CheckForZkeyProps {
-  setDownloadStatus: (value: "not_started" | "downloading" | "completed" | "error") => void;
-  setShowWarning: (value: boolean) => void;
-  toast: any
-}
-
-export async function checkForZkey({
-  setDownloadStatus,
-  setShowWarning,
-  toast
-}: CheckForZkeyProps) {
-  console.log('local zip path:', localZipPath)
-  const url = Platform.OS === 'android' ? ARKZKEY_URL : ZKEY_URL
-
-  let storedUrl = '';
-  try {
-    storedUrl = await RNFS.readFile(localUrlPath, 'utf8');
-  } catch (error) {
-    console.log('zkey_url.txt file not found, so assuming zkey is outdated.');
-  }
-
-  const fileExists = await RNFS.exists(localZipPath);
-  const fileInfo = fileExists ? await RNFS.stat(localZipPath) : null;
-
-  const response = await axios.head(url);
-  const expectedSize = parseInt(response.headers['content-length'], 10);
-  const isFileComplete = fileInfo && fileInfo.size === expectedSize;
-
-  console.log('expectedSize:', expectedSize)
-  console.log('fileInfo.size:', fileInfo?.size)
-  console.log('isFileComplete:', isFileComplete)
-
-  if (!isFileComplete || url !== storedUrl) {
-    const state = await NetInfo.fetch();
-    console.log('Network start type:', state.type)
-    if (state.type === 'wifi') {
-      downloadZkey(
-        setDownloadStatus,
-        toast
-      )
-    } else {
-      setShowWarning(true);
-    }
-  } else {
-    console.log('zkey already downloaded')
-    amplitude.track('zkey already downloaded');
-    setDownloadStatus('completed');
-    initMopro()
-  }
-}
+}
--- a/common/src/constants/constants.ts
+++ b/common/src/constants/constants.ts
@@ -1,7 +1,4 @@
-export const AWS_ENDPOINT = "https://0pw5u65m3a.execute-api.eu-north-1.amazonaws.com/api-stage/mint"
-
-export const ZKEY_NAME = "proof_of_passport_final_v01"
-export const ZKEY_URL = `https://d8o9bercqupgk.cloudfront.net/${ZKEY_NAME}.zkey.zip`
+export const RELAYER_URL = "https://0pw5u65m3a.execute-api.eu-north-1.amazonaws.com/api-stage/mint"

 export const TREE_DEPTH = 16

--- a/contracts/test/ProofOfPassport.ts
+++ b/contracts/test/ProofOfPassport.ts
@@ -280,9 +280,9 @@ describe("Proof of Passport", function () {

        console.log('transactionRequest', transactionRequest);

-        const apiEndpoint = process.env.AWS_ENDPOINT;
+        const apiEndpoint = process.env.RELAYER_URL;
        if (!apiEndpoint) {
-          throw new Error('AWS_ENDPOINT env variable is not set');
+          throw new Error('RELAYER_URL env variable is not set');
        }
        const response = await axios.post(apiEndpoint, {
          chain: "mumbai",