feat(INJI-202): hash uin/vid to store in mmkv and file storage (#780)

* feat(INJI-202): hash uin/vid to store in mmkv and file storage

* feat(INJI-202): refactor to store salt in constants

* feat(INJI-202): refactor argon2i salt and add function to get MMKV data

* feat(INJI-202): refactor to get mkkv data method

---------

Co-authored-by: Pooja Babusingh <68894211+PoojaBabusingh@users.noreply.github.com>

machines/vcItem.ts

@@ -1,6 +1,11 @@
 import { assign, ErrorPlatformEvent, EventFrom, send, StateFrom } from 'xstate';
 import { createModel } from 'xstate/lib/model';
-import { HOST, MY_VCS_STORE_KEY, VC_ITEM_STORE_KEY } from '../shared/constants';
+import {
+  HOST,
+  MY_VCS_STORE_KEY,
+  VC_ITEM_STORE_KEY,
+  VC_ITEM_STORE_KEY_AFTER_DOWNLOAD,
+} from '../shared/constants';
 import { AppServices } from '../shared/GlobalContext';
 import { CredentialDownloadResponse, request } from '../shared/request';
 import {
@@ -60,6 +65,7 @@ const model = createModel(
     walletBindingError: '',
     publicKey: '',
     privateKey: '',
+    hashedId: '',
   },
   {
     events: {
@@ -195,7 +201,11 @@ export const vcItemMachine =
                   },
                 ],
                 CREDENTIAL_DOWNLOADED: {
-                  actions: ['setStoreVerifiableCredential', 'storeContext'],
+                  actions: [
+                    'setStoreVerifiableCredential',
+                    'storeContext',
+                    'editVcKey',
+                  ],
                 },
                 STORE_RESPONSE: {
                   actions: [
@@ -907,6 +917,14 @@ export const vcItemMachine =
           }
         ),
 
+        editVcKey: send((context) => {
+          const { serviceRefs, ...data } = context;
+          return StoreEvents.SET(
+            VC_ITEM_STORE_KEY_AFTER_DOWNLOAD(context),
+            data
+          );
+        }),
+
         setTag: model.assign({
           tag: (_, event) => event.tag,
         }),
@@ -1331,7 +1349,7 @@ export const createVcItemMachine = (
   serviceRefs: AppServices,
   vcKey: string
 ) => {
-  const [, idType, id, requestId, isPinned] = vcKey.split(':');
+  const [, idType, hashedId, requestId, isPinned, id] = vcKey.split(':');
   return vcItemMachine.withContext({
     ...vcItemMachine.context,
     serviceRefs,
@@ -1339,6 +1357,7 @@ export const createVcItemMachine = (
     idType: idType as VcIdType,
     requestId,
     isPinned: isPinned == 'true' ? true : false,
+    hashedId,
   });
 };
 

machines/vcItem.typegen.ts

@@ -165,6 +165,7 @@ export interface Typegen0 {
     services: never;
   };
   'eventsCausingActions': {
+    VcUpdated: 'STORE_RESPONSE';
     clearOtp:
       | ''
       | 'CANCEL'
@@ -189,6 +190,7 @@ export interface Typegen0 {
       | 'done.invoke.vc-item.updatingPrivateKey:invocation[0]'
       | 'done.invoke.vc-item.verifyingCredential:invocation[0]'
       | 'error.platform.vc-item.verifyingCredential:invocation[0]';
+    editVcKey: 'CREDENTIAL_DOWNLOADED';
     incrementDownloadCounter: 'POLL';
     logDownloaded: 'STORE_RESPONSE';
     logRevoked: 'STORE_RESPONSE';

screens/Home/MyVcs/AddVcModalMachine.ts

@@ -9,9 +9,14 @@ import {
 } from 'xstate';
 import { createModel } from 'xstate/lib/model';
 import { BackendResponseError, request } from '../../../shared/request';
-import { VC_ITEM_STORE_KEY } from '../../../shared/constants';
+import {
+  argon2iConfigForUinVid,
+  argon2iSalt,
+  VC_ITEM_STORE_KEY,
+} from '../../../shared/constants';
 import { VcIdType } from '../../../types/vc';
 import i18n from '../../../i18n';
+import { hashData } from '../../../shared/commonUtil';
 
 const model = createModel(
   {
@@ -24,6 +29,7 @@ const model = createModel(
     transactionId: '',
     requestId: '',
     isPinned: false,
+    hashedId: '',
   },
   {
     events: {
@@ -206,7 +212,7 @@ export const AddVcModalMachine =
             onDone: [
               {
                 actions: 'setRequestId',
-                target: 'done',
+                target: 'calculatingHashedId',
               },
             ],
             onError: [
@@ -222,6 +228,15 @@ export const AddVcModalMachine =
             ],
           },
         },
+        calculatingHashedId: {
+          invoke: {
+            src: 'calculateHashedId',
+            onDone: {
+              actions: 'setHashedId',
+              target: 'done',
+            },
+          },
+        },
         done: {
           type: 'final',
           data: (context) => VC_ITEM_STORE_KEY(context),
@@ -281,6 +296,11 @@ export const AddVcModalMachine =
 
         clearId: model.assign({ id: '' }),
 
+        setHashedId: model.assign({
+          hashedId: (_context, event) =>
+            (event as DoneInvokeEvent<string>).data,
+        }),
+
         clearIdError: model.assign({ idError: '' }),
 
         setIdErrorEmpty: model.assign({
@@ -349,6 +369,17 @@ export const AddVcModalMachine =
           );
           return response.response.requestId;
         },
+
+        calculateHashedId: async (context) => {
+          const value = context.id;
+          const hashedid = await hashData(
+            value,
+            argon2iSalt,
+            argon2iConfigForUinVid
+          );
+          context.hashedId = hashedid;
+          return hashedid;
+        },
       },
 
       guards: {

shared/commonUtil.ts

@@ -6,7 +6,6 @@ export const hashData = async (
   config: Argon2iConfig
 ): Promise<string> => {
   const result = await argon2(data, salt, config);
-  console.log('argon--result', result);
   return result.rawHash as string;
 };
 
@@ -15,5 +14,5 @@ export interface Argon2iConfig {
   memory: number;
   parallelism: number;
   hashLength: number;
-  mode: String;
+  mode: string;
 }

shared/constants.ts

@@ -17,11 +17,14 @@ export const RECEIVED_VCS_STORE_KEY = 'receivedVCs';
 export const MY_LOGIN_STORE_KEY = 'myLogins';
 
 export const VC_ITEM_STORE_KEY = (vc: Partial<VC>) =>
-  `vc:${vc.idType}:${vc.id}:${vc.requestId}:${vc.isPinned}`;
+  `vc:${vc.idType}:${vc.hashedId}:${vc.requestId}:${vc.isPinned}:${vc.id}`;
+
+export const VC_ITEM_STORE_KEY_AFTER_DOWNLOAD = (vc: Partial<VC>) =>
+  `vc:${vc.idType}:${vc.hashedId}:${vc.requestId}:${vc.isPinned}`;
 
 //Regex expression to evaluate if the key is for a VC
 export const VC_ITEM_STORE_KEY_REGEX =
-  '^vc:(UIN|VID):[0-9]+:[a-z0-9-]+:[true|false]+$';
+  '^vc:(UIN|VID):[a-z0-9]+:[a-z0-9-]+:[true|false]+(:[0-9-]+)?$';
 
 //To compare the vckey with requestId, when the vc is pinned
 export const isSameVC = (vcKey: string, pinnedVcKey: string) => {
@@ -69,3 +72,14 @@ export const argon2iConfig: Argon2iConfig = {
   hashLength: 20,
   mode: 'argon2i',
 };
+
+export const argon2iConfigForUinVid: Argon2iConfig = {
+  iterations: 5,
+  memory: 16 * 1024,
+  parallelism: 2,
+  hashLength: 5,
+  mode: 'argon2i',
+};
+
+export const argon2iSalt =
+  '1234567891011121314151617181920212223242526272829303132333435363';

shared/storage.ts

@@ -183,4 +183,9 @@ const getVCKeyName = (key: string) => {
   return key.split(':').splice(0, 4).join(':');
 };
 
+// To print the MMKV data cal this function in getItem
+const getMMKVData = async () => {
+  const mmkvData = await MMKV.indexer.getKeys();
+};
+
 export default Storage;

types/vc.ts

@@ -17,6 +17,7 @@ export interface VC {
   walletBindingResponse?: WalletBindingResponse;
   credentialRegistry: string;
   isPinned?: boolean;
+  hashedId: string;
 }
 
 export interface VCSharingReason {