Update localization files for backup destinations and API client credentials

- Changed references from E3 to S3 in Russian, Simplified Chinese, and Traditional Chinese localization files.
- Updated the corresponding keys and descriptions to reflect the change in backup destination protocols.
- Improved the Vite configuration to dynamically match locale files, simplifying the code for locale handling.

src/handlers/ciphers.ts

@@ -78,6 +78,43 @@ function syncCipherComputedAliases(cipher: Cipher): Cipher {
   return cipher;
 }
 
+function isValidEncString(value: unknown): value is string {
+  if (typeof value !== 'string') return false;
+  const trimmed = value.trim();
+  const dot = trimmed.indexOf('.');
+  if (dot <= 0) return false;
+  const type = Number(trimmed.slice(0, dot));
+  if (!Number.isInteger(type) || type < 0) return false;
+  const parts = trimmed.slice(dot + 1).split('|');
+  if (parts.some((part) => part.length === 0)) return false;
+
+  // Bitwarden's legacy symmetric EncString variants require IV + data,
+  // while the authenticated AES-CBC-HMAC variant requires IV + data + MAC.
+  if (type === 0 || type === 1 || type === 4) return parts.length >= 2;
+  if (type === 2) return parts.length === 3;
+
+  // Keep newer one-part formats, such as COSE Encrypt0, future-compatible.
+  return parts.length >= 1;
+}
+
+function optionalEncString(value: unknown): string | null {
+  if (value == null || value === '') return null;
+  return isValidEncString(value) ? value.trim() : null;
+}
+
+function sanitizeEncryptedObject<T extends Record<string, any>>(
+  source: T | null | undefined,
+  encryptedKeys: readonly string[]
+): T | null {
+  if (!source || typeof source !== 'object') return source ?? null;
+  const next: Record<string, any> = { ...source };
+  for (const key of encryptedKeys) {
+    if (!Object.prototype.hasOwnProperty.call(next, key)) continue;
+    next[key] = optionalEncString(next[key]);
+  }
+  return next as T;
+}
+
 function normalizeCipherForStorage(cipher: Cipher): Cipher {
   cipher.login = normalizeCipherLoginForStorage(cipher.login);
   cipher.sshKey = normalizeCipherSshKeyForCompatibility(cipher.sshKey);
@@ -100,7 +137,53 @@ export function normalizeCipherLoginForStorage(login: any): any {
 export function normalizeCipherLoginForCompatibility(login: any): any {
   const normalized = normalizeCipherLoginForStorage(login);
   if (!normalized || typeof normalized !== 'object') return normalized ?? null;
-  return normalized;
+  const next = sanitizeEncryptedObject(normalized, ['username', 'password', 'totp', 'uri']);
+  if (!next) return null;
+  next.uris = Array.isArray(next.uris)
+    ? next.uris
+        .map((uri: any) => sanitizeEncryptedObject(uri, ['uri', 'uriChecksum']))
+        .filter((uri: any) => !!uri && (uri.uri || uri.uriChecksum || uri.match != null))
+    : null;
+  next.fido2Credentials = normalizeFido2CredentialsForCompatibility(next.fido2Credentials);
+  return next;
+}
+
+function normalizeFido2CredentialsForCompatibility(credentials: any): any[] | null {
+  if (!Array.isArray(credentials) || credentials.length === 0) return null;
+  const requiredEncryptedKeys = [
+    'credentialId',
+    'keyType',
+    'keyAlgorithm',
+    'keyCurve',
+    'keyValue',
+    'rpId',
+    'counter',
+    'discoverable',
+  ];
+  const optionalEncryptedKeys = ['userHandle', 'userName', 'rpName', 'userDisplayName'];
+  const out: any[] = [];
+
+  for (const credential of credentials) {
+    if (!credential || typeof credential !== 'object') continue;
+    const next: Record<string, any> = { ...credential };
+    let valid = true;
+    for (const key of requiredEncryptedKeys) {
+      if (!isValidEncString(next[key])) {
+        valid = false;
+        break;
+      }
+      next[key] = String(next[key]).trim();
+    }
+    if (!valid) continue;
+    for (const key of optionalEncryptedKeys) {
+      if (Object.prototype.hasOwnProperty.call(next, key)) {
+        next[key] = optionalEncString(next[key]);
+      }
+    }
+    out.push(next);
+  }
+
+  return out.length ? out : null;
 }
 
 // Android 2026.2.0 requires sshKey.keyFingerprint in sync payloads.
@@ -118,8 +201,18 @@ export function normalizeCipherSshKeyForCompatibility(sshKey: any): any {
       ? ''
       : String(candidate);
 
+  if (
+    !isValidEncString(sshKey.privateKey) ||
+    !isValidEncString(sshKey.publicKey) ||
+    !isValidEncString(normalizedFingerprint)
+  ) {
+    return null;
+  }
+
   return {
     ...sshKey,
+    privateKey: String(sshKey.privateKey).trim(),
+    publicKey: String(sshKey.publicKey).trim(),
     keyFingerprint: normalizedFingerprint,
     fingerprint: normalizedFingerprint,
   };
@@ -128,16 +221,52 @@ export function normalizeCipherSshKeyForCompatibility(sshKey: any): any {
 // Format attachments for API response
 export function formatAttachments(attachments: Attachment[]): any[] | null {
   if (attachments.length === 0) return null;
-  return attachments.map(a => ({
-    id: a.id,
-    fileName: a.fileName,
-    // Bitwarden clients decode attachment size as string in cipher payloads.
-    size: String(Number(a.size) || 0),
-    sizeName: a.sizeName,
-    key: a.key,
-    url: `/api/ciphers/${a.cipherId}/attachment/${a.id}`,  // Android requires non-null url!
-    object: 'attachment',
-  }));
+  const formatted = attachments
+    .filter((a) => isValidEncString(a.fileName))
+    .map(a => ({
+      id: a.id,
+      fileName: a.fileName.trim(),
+      // Bitwarden clients decode attachment size as string in cipher payloads.
+      size: String(Number(a.size) || 0),
+      sizeName: a.sizeName,
+      key: optionalEncString(a.key),
+      url: `/api/ciphers/${a.cipherId}/attachment/${a.id}`,  // Android requires non-null url!
+      object: 'attachment',
+    }));
+  return formatted.length ? formatted : null;
+}
+
+function normalizeCipherFieldsForCompatibility(fields: any): any[] | null {
+  if (!Array.isArray(fields) || fields.length === 0) return null;
+  const out = fields
+    .map((field: any) => {
+      if (!field || typeof field !== 'object') return null;
+      return {
+        ...field,
+        name: optionalEncString(field.name),
+        value: optionalEncString(field.value),
+        type: Number(field.type) || 0,
+        linkedId: field.linkedId ?? null,
+      };
+    })
+    .filter(Boolean);
+  return out.length ? out : null;
+}
+
+function normalizePasswordHistoryForCompatibility(passwordHistory: any): PasswordHistory[] | null {
+  if (!Array.isArray(passwordHistory) || passwordHistory.length === 0) return null;
+  const out = passwordHistory
+    .filter((entry: any) => entry && typeof entry === 'object' && isValidEncString(entry.password))
+    .map((entry: any) => ({
+      ...entry,
+      password: String(entry.password).trim(),
+      lastUsedDate: normalizeCipherTimestamp(entry.lastUsedDate) ?? new Date().toISOString(),
+    }));
+  return out.length ? out : null;
+}
+
+export function isCipherResponseSyncCompatible(cipher: CipherResponse): boolean {
+  return isValidEncString(cipher.name);
 }
 
 // Convert internal cipher to API response format.
@@ -151,6 +280,27 @@ export function cipherToResponse(
   // Strip internal-only fields that must not appear in the API response
   const { userId, createdAt, updatedAt, archivedAt, deletedAt, ...passthrough } = cipher;
   const normalizedLogin = normalizeCipherLoginForCompatibility((passthrough as any).login ?? null);
+  const normalizedCard = sanitizeEncryptedObject((passthrough as any).card ?? null, ['cardholderName', 'brand', 'number', 'expMonth', 'expYear', 'code']);
+  const normalizedIdentity = sanitizeEncryptedObject((passthrough as any).identity ?? null, [
+    'title',
+    'firstName',
+    'middleName',
+    'lastName',
+    'address1',
+    'address2',
+    'address3',
+    'city',
+    'state',
+    'postalCode',
+    'country',
+    'company',
+    'email',
+    'phone',
+    'ssn',
+    'username',
+    'passportNumber',
+    'licenseNumber',
+  ]);
   const normalizedSshKey = normalizeCipherSshKeyForCompatibility((passthrough as any).sshKey ?? null);
 
   return {
@@ -174,8 +324,15 @@ export function cipherToResponse(
     object: 'cipherDetails',
     collectionIds: Array.isArray((passthrough as any).collectionIds) ? (passthrough as any).collectionIds : [],
     attachments: formatAttachments(attachments),
+    name: isValidEncString(cipher.name) ? cipher.name.trim() : cipher.name,
+    notes: optionalEncString(cipher.notes),
     login: normalizedLogin,
+    card: normalizedCard,
+    identity: normalizedIdentity,
+    fields: normalizeCipherFieldsForCompatibility((passthrough as any).fields),
+    passwordHistory: normalizePasswordHistoryForCompatibility((passthrough as any).passwordHistory),
     sshKey: normalizedSshKey,
+    key: optionalEncString(cipher.key),
     encryptedFor: (passthrough as any).encryptedFor ?? null,
   };
 }

src/handlers/sync.ts

@@ -1,7 +1,7 @@
 import { Env, SyncResponse, CipherResponse, FolderResponse, ProfileResponse } from '../types';
 import { StorageService } from '../services/storage';
 import { errorResponse } from '../utils/response';
-import { cipherToResponse } from './ciphers';
+import { cipherToResponse, isCipherResponseSyncCompatible } from './ciphers';
 import { sendToResponse } from './sends';
 import { LIMITS } from '../config/limits';
 import {
@@ -86,7 +86,10 @@ export async function handleSync(request: Request, env: Env, userId: string): Pr
 
   const cipherResponses: CipherResponse[] = [];
   for (const cipher of ciphers) {
-    cipherResponses.push(cipherToResponse(cipher, attachmentsByCipher.get(cipher.id) || []));
+    const response = cipherToResponse(cipher, attachmentsByCipher.get(cipher.id) || []);
+    if (isCipherResponseSyncCompatible(response)) {
+      cipherResponses.push(response);
+    }
   }
 
   const folderResponses: FolderResponse[] = [];

src/services/backup-config.ts

@@ -16,7 +16,7 @@ import {
   type BackupRuntimeState,
   type BackupScheduleConfig,
   type BackupSettings,
-  type E3BackupDestination,
+  type S3BackupDestination,
   type WebDavBackupDestination,
   createBackupRandomId,
   createDefaultBackupDestinationName,
@@ -35,7 +35,7 @@ export type {
   BackupRuntimeState,
   BackupScheduleConfig,
   BackupSettings,
-  E3BackupDestination,
+  S3BackupDestination,
   WebDavBackupDestination,
 } from '../../shared/backup-schema';
 
@@ -105,7 +105,7 @@ function normalizeStartTime(value: unknown, fallback: string = BACKUP_DEFAULT_ST
   return `${String(hour).padStart(2, '0')}:${String(minute).padStart(2, '0')}`;
 }
 
-function normalizeE3Destination(value: unknown, allowIncomplete = false): E3BackupDestination {
+function normalizeS3Destination(value: unknown, allowIncomplete = false): S3BackupDestination {
   const source = isPlainObject(value) ? value : {};
   const endpoint = asTrimmedString(source.endpoint);
   const bucket = asTrimmedString(source.bucket);
@@ -115,17 +115,17 @@ function normalizeE3Destination(value: unknown, allowIncomplete = false): E3Back
   const rootPath = normalizePath(source.rootPath);
 
   if (!allowIncomplete || endpoint) {
-    if (!endpoint) throw new Error('E3 endpoint is required');
-    if (!/^https?:\/\//i.test(endpoint)) throw new Error('E3 endpoint must start with http:// or https://');
+    if (!endpoint) throw new Error('S3 endpoint is required');
+    if (!/^https?:\/\//i.test(endpoint)) throw new Error('S3 endpoint must start with http:// or https://');
   }
   if (!allowIncomplete || bucket) {
-    if (!bucket) throw new Error('E3 bucket is required');
+    if (!bucket) throw new Error('S3 bucket is required');
   }
   if (!allowIncomplete || accessKeyId) {
-    if (!accessKeyId) throw new Error('E3 access key is required');
+    if (!accessKeyId) throw new Error('S3 access key is required');
   }
   if (!allowIncomplete || secretAccessKey) {
-    if (!secretAccessKey) throw new Error('E3 secret key is required');
+    if (!secretAccessKey) throw new Error('S3 secret key is required');
   }
 
   return {
@@ -169,7 +169,7 @@ function normalizeDestination(
   destination: unknown,
   allowIncomplete = false
 ): BackupDestinationConfig {
-  if (destinationType === 'e3') return normalizeE3Destination(destination, allowIncomplete);
+  if (destinationType === 's3') return normalizeS3Destination(destination, allowIncomplete);
   return normalizeWebDavDestination(destination, allowIncomplete);
 }
 
@@ -204,7 +204,8 @@ function defaultDestinationName(type: BackupDestinationType, index: number): str
 
 function getDestinationType(raw: unknown): BackupDestinationType {
   const value = asTrimmedString(raw);
-  if (value === 'e3' || value === 'webdav') return value;
+  if (value === 'e3') return 's3';
+  if (value === 's3' || value === 'webdav') return value;
   throw new Error('Backup destination type is invalid');
 }
 
@@ -266,8 +267,8 @@ function parseLegacyBackupSettings(rawValue: Record<string, unknown>, fallbackTi
       : BACKUP_DEFAULT_INTERVAL_HOURS;
   const destinationTypeRaw = asTrimmedString(rawValue.destinationType);
   const destinationType: BackupDestinationType =
-    destinationTypeRaw === 'e3' || destinationTypeRaw === 'webdav'
-      ? destinationTypeRaw
+    destinationTypeRaw === 'e3' || destinationTypeRaw === 's3' || destinationTypeRaw === 'webdav'
+      ? getDestinationType(destinationTypeRaw)
       : 'webdav';
   const destination = {
     id: createBackupRandomId(),

src/services/backup-uploader.ts

@@ -1,7 +1,7 @@
 import {
   BackupDestinationRecord,
   BackupDestinationType,
-  E3BackupDestination,
+  S3BackupDestination,
   WebDavBackupDestination,
 } from './backup-config';
 
@@ -213,13 +213,13 @@ function ensureDestinationConfigReady(destination: BackupDestinationRecord): voi
     if (!String(config.password || '')) throw new Error('WebDAV password is required');
     return;
   }
-  if (destination.type === 'e3') {
-    const config = destination.destination as E3BackupDestination;
-    if (!String(config.endpoint || '').trim()) throw new Error('E3 endpoint is required');
-    if (!/^https?:\/\//i.test(String(config.endpoint || '').trim())) throw new Error('E3 endpoint must start with http:// or https://');
-    if (!String(config.bucket || '').trim()) throw new Error('E3 bucket is required');
-    if (!String(config.accessKeyId || '').trim()) throw new Error('E3 access key is required');
-    if (!String(config.secretAccessKey || '')) throw new Error('E3 secret key is required');
+  if (destination.type === 's3') {
+    const config = destination.destination as S3BackupDestination;
+    if (!String(config.endpoint || '').trim()) throw new Error('S3 endpoint is required');
+    if (!/^https?:\/\//i.test(String(config.endpoint || '').trim())) throw new Error('S3 endpoint must start with http:// or https://');
+    if (!String(config.bucket || '').trim()) throw new Error('S3 bucket is required');
+    if (!String(config.accessKeyId || '').trim()) throw new Error('S3 access key is required');
+    if (!String(config.secretAccessKey || '')) throw new Error('S3 secret key is required');
   }
 }
 
@@ -448,16 +448,16 @@ async function existsInWebDav(config: WebDavBackupDestination, relativePath: str
   return true;
 }
 
-function e3BucketBaseUrl(config: E3BackupDestination): URL {
+function s3BucketBaseUrl(config: S3BackupDestination): URL {
   return new URL(`${config.endpoint.replace(/\/+$/, '')}/${encodeURIComponent(config.bucket)}`);
 }
 
-function normalizeE3ObjectKey(config: E3BackupDestination, relativePath: string): string {
+function normalizeS3ObjectKey(config: S3BackupDestination, relativePath: string): string {
   return buildJoinedPath(config.rootPath, normalizeRelativePath(relativePath));
 }
 
-async function signedE3Request(
-  config: E3BackupDestination,
+async function signedS3Request(
+  config: S3BackupDestination,
   method: 'GET' | 'PUT' | 'DELETE' | 'HEAD',
   url: URL,
   body?: Uint8Array,
@@ -494,41 +494,41 @@ async function signedE3Request(
   });
 }
 
-async function putToE3(
-  config: E3BackupDestination,
+async function putToS3(
+  config: S3BackupDestination,
   relativePath: string,
   bytes: Uint8Array,
   options: RemoteBackupFilePutOptions = {}
 ): Promise<void> {
-  const objectKey = normalizeE3ObjectKey(config, relativePath);
-  const url = new URL(`${e3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
-  const response = await signedE3Request(config, 'PUT', url, bytes, options.contentType);
+  const objectKey = normalizeS3ObjectKey(config, relativePath);
+  const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
+  const response = await signedS3Request(config, 'PUT', url, bytes, options.contentType);
 
   if (!response.ok) {
-    throw new Error(`E3 upload failed: ${response.status}`);
+    throw new Error(`S3 upload failed: ${response.status}`);
   }
 }
 
-async function uploadToE3(config: E3BackupDestination, archive: Uint8Array, fileName: string): Promise<BackupUploadResult> {
-  await putToE3(config, fileName, archive, { contentType: 'application/zip' });
+async function uploadToS3(config: S3BackupDestination, archive: Uint8Array, fileName: string): Promise<BackupUploadResult> {
+  await putToS3(config, fileName, archive, { contentType: 'application/zip' });
   return {
-    provider: 'e3',
-    remotePath: normalizeE3ObjectKey(config, fileName),
+    provider: 's3',
+    remotePath: normalizeS3ObjectKey(config, fileName),
   };
 }
 
-async function listE3Entries(config: E3BackupDestination, relativePath: string): Promise<RemoteBackupListResult> {
+async function listS3Entries(config: S3BackupDestination, relativePath: string): Promise<RemoteBackupListResult> {
   const currentPath = normalizeRelativePath(relativePath);
-  const targetPrefixBase = normalizeE3ObjectKey(config, currentPath);
+  const targetPrefixBase = normalizeS3ObjectKey(config, currentPath);
   const targetPrefix = trimSlashes(targetPrefixBase) ? `${trimSlashes(targetPrefixBase)}/` : '';
-  const url = e3BucketBaseUrl(config);
+  const url = s3BucketBaseUrl(config);
   url.searchParams.set('list-type', '2');
   url.searchParams.set('delimiter', '/');
   if (targetPrefix) url.searchParams.set('prefix', targetPrefix);
 
-  const response = await signedE3Request(config, 'GET', url);
+  const response = await signedS3Request(config, 'GET', url);
   if (!response.ok) {
-    throw new Error(`E3 listing failed: ${response.status}`);
+    throw new Error(`S3 listing failed: ${response.status}`);
   }
 
   const xml = await response.text();
@@ -581,26 +581,26 @@ async function listE3Entries(config: E3BackupDestination, relativePath: string):
   for (const item of items) deduped.set(`${item.isDirectory ? 'd' : 'f'}:${item.path}`, item);
 
   return {
-    provider: 'e3',
+    provider: 's3',
     currentPath,
     parentPath: parentPath(currentPath),
     items: sortRemoteItems(Array.from(deduped.values())),
   };
 }
 
-async function downloadFromE3(config: E3BackupDestination, relativePath: string): Promise<RemoteBackupFile> {
+async function downloadFromS3(config: S3BackupDestination, relativePath: string): Promise<RemoteBackupFile> {
   const normalized = normalizeRelativePath(relativePath);
   if (!normalized || normalized.endsWith('/')) {
     throw new Error('Please select a backup file');
   }
-  const objectKey = normalizeE3ObjectKey(config, normalized);
-  const url = new URL(`${e3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
-  const response = await signedE3Request(config, 'GET', url);
+  const objectKey = normalizeS3ObjectKey(config, normalized);
+  const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
+  const response = await signedS3Request(config, 'GET', url);
   if (!response.ok) {
-    throw new Error(`E3 download failed: ${response.status}`);
+    throw new Error(`S3 download failed: ${response.status}`);
   }
   return {
-    provider: 'e3',
+    provider: 's3',
     remotePath: normalized,
     fileName: basename(normalized) || 'backup.zip',
     contentType: String(response.headers.get('Content-Type') || 'application/zip').trim() || 'application/zip',
@@ -608,35 +608,35 @@ async function downloadFromE3(config: E3BackupDestination, relativePath: string)
   };
 }
 
-async function deleteFromE3(config: E3BackupDestination, relativePath: string): Promise<void> {
-  const objectKey = normalizeE3ObjectKey(config, relativePath);
-  const url = new URL(`${e3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
-  const response = await signedE3Request(config, 'DELETE', url);
+async function deleteFromS3(config: S3BackupDestination, relativePath: string): Promise<void> {
+  const objectKey = normalizeS3ObjectKey(config, relativePath);
+  const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
+  const response = await signedS3Request(config, 'DELETE', url);
   if (!response.ok && response.status !== 404) {
-    throw new Error(`E3 delete failed: ${response.status}`);
+    throw new Error(`S3 delete failed: ${response.status}`);
   }
 }
 
-async function existsInE3(config: E3BackupDestination, relativePath: string): Promise<boolean> {
-  const objectKey = normalizeE3ObjectKey(config, relativePath);
-  const url = new URL(`${e3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
-  const response = await signedE3Request(config, 'HEAD', url);
+async function existsInS3(config: S3BackupDestination, relativePath: string): Promise<boolean> {
+  const objectKey = normalizeS3ObjectKey(config, relativePath);
+  const url = new URL(`${s3BucketBaseUrl(config).toString()}/${encodePathSegments(objectKey)}`);
+  const response = await signedS3Request(config, 'HEAD', url);
   if (response.status === 404) return false;
   if (!response.ok) {
-    throw new Error(`E3 existence check failed: ${response.status}`);
+    throw new Error(`S3 existence check failed: ${response.status}`);
   }
   return true;
 }
 
 interface ConfiguredDestinationAdapter {
-  provider: 'webdav' | 'e3';
-  config: WebDavBackupDestination | E3BackupDestination;
-  upload: (config: WebDavBackupDestination | E3BackupDestination, archive: Uint8Array, fileName: string) => Promise<BackupUploadResult>;
-  putFile: (config: WebDavBackupDestination | E3BackupDestination, relativePath: string, bytes: Uint8Array, options?: RemoteBackupFilePutOptions) => Promise<void>;
-  list: (config: WebDavBackupDestination | E3BackupDestination, relativePath: string) => Promise<RemoteBackupListResult>;
-  download: (config: WebDavBackupDestination | E3BackupDestination, relativePath: string) => Promise<RemoteBackupFile>;
-  deleteFile: (config: WebDavBackupDestination | E3BackupDestination, relativePath: string) => Promise<void>;
-  exists: (config: WebDavBackupDestination | E3BackupDestination, relativePath: string) => Promise<boolean>;
+  provider: 'webdav' | 's3';
+  config: WebDavBackupDestination | S3BackupDestination;
+  upload: (config: WebDavBackupDestination | S3BackupDestination, archive: Uint8Array, fileName: string) => Promise<BackupUploadResult>;
+  putFile: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string, bytes: Uint8Array, options?: RemoteBackupFilePutOptions) => Promise<void>;
+  list: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<RemoteBackupListResult>;
+  download: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<RemoteBackupFile>;
+  deleteFile: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<void>;
+  exists: (config: WebDavBackupDestination | S3BackupDestination, relativePath: string) => Promise<boolean>;
 }
 
 export interface RemoteBackupTransferSession {
@@ -666,16 +666,16 @@ function resolveConfiguredDestinationAdapter(
       exists: (config, relativePath) => existsInWebDav(config as WebDavBackupDestination, relativePath),
     };
   }
-  if (destination.type === 'e3') {
+  if (destination.type === 's3') {
     return {
-      provider: 'e3',
-      config: destination.destination as E3BackupDestination,
-      upload: (config, archive, fileName) => uploadToE3(config as E3BackupDestination, archive, fileName),
-      putFile: (config, relativePath, bytes, options) => putToE3(config as E3BackupDestination, relativePath, bytes, options),
-      list: (config, relativePath) => listE3Entries(config as E3BackupDestination, relativePath),
-      download: (config, relativePath) => downloadFromE3(config as E3BackupDestination, relativePath),
-      deleteFile: (config, relativePath) => deleteFromE3(config as E3BackupDestination, relativePath),
-      exists: (config, relativePath) => existsInE3(config as E3BackupDestination, relativePath),
+      provider: 's3',
+      config: destination.destination as S3BackupDestination,
+      upload: (config, archive, fileName) => uploadToS3(config as S3BackupDestination, archive, fileName),
+      putFile: (config, relativePath, bytes, options) => putToS3(config as S3BackupDestination, relativePath, bytes, options),
+      list: (config, relativePath) => listS3Entries(config as S3BackupDestination, relativePath),
+      download: (config, relativePath) => downloadFromS3(config as S3BackupDestination, relativePath),
+      deleteFile: (config, relativePath) => deleteFromS3(config as S3BackupDestination, relativePath),
+      exists: (config, relativePath) => existsInS3(config as S3BackupDestination, relativePath),
     };
   }
 
@@ -703,7 +703,7 @@ export function createRemoteBackupTransferSession(destination: BackupDestination
         provider: adapter.provider,
         remotePath: adapter.provider === 'webdav'
           ? buildJoinedPath((adapter.config as WebDavBackupDestination).remotePath, fileName)
-          : normalizeE3ObjectKey(adapter.config as E3BackupDestination, fileName),
+          : normalizeS3ObjectKey(adapter.config as S3BackupDestination, fileName),
       };
     },
     putFile,