feat: enable encrypted wallet backup with updated authScheme flow

Author: 0xnullifier

src/lib/miden/back/vault.ts

@@ -116,7 +116,8 @@ export class Vault {
         name: 'Miden Account 1',
         isPublic: true,
         type: WalletType.OnChain,
-        hdIndex: hdAccIndex
+        hdIndex: hdAccIndex,
+        authScheme
       };
       const newAccounts = [initialAccount];
 
@@ -246,7 +247,8 @@ export class Vault {
         name: accName,
         publicKey: walletId,
         isPublic: walletType === WalletType.OnChain,
-        hdIndex: hdAccIndex
+        hdIndex: hdAccIndex,
+        authScheme
       };
 
       const newAllAcounts = concatAccount(allAccounts, newAccount);

src/lib/shared/types.ts

@@ -153,6 +153,8 @@ export interface WalletAccount {
   isPublic: boolean;
   type: WalletType;
   hdIndex: number;
+  // Optional here for backwards compatibility
+  authScheme?: AuthScheme;
 }
 
 export interface WalletNetwork {

src/screens/encrypted-file-flow/ExportFileComplete.tsx

@@ -11,6 +11,8 @@ import { Button, ButtonVariant } from 'components/Button';
 import { useMidenContext } from 'lib/miden/front';
 import { deriveKey, encrypt, encryptJson, generateKey, generateSalt } from 'lib/miden/passworder';
 import { exportDb } from 'lib/miden/repo';
+import { WalletAccount } from 'lib/shared/types';
+import { AuthScheme } from 'screens/onboarding/types';
 import { EncryptedWalletFile, ENCRYPTED_WALLET_FILE_PASSWORD_CHECK, DecryptedWalletFile } from 'screens/shared';
 
 export interface ExportFileCompleteProps {
@@ -41,6 +43,11 @@ const ExportFileComplete: React.FC<ExportFileCompleteProps> = ({
     const midenClientDbDump = await midenClient.exportDb();
     const walletDbDump = await exportDb();
 
+    const accs = accounts.map(acc => ({
+      ...acc,
+      authScheme: acc.authScheme ?? AuthScheme.Falcon
+    }));
+
     const seedPhrase = await revealMnemonic(walletPassword);
     const secretKeysForImportedAccounts: Record<string, string> = {};