Error during verification: Message digest doesn't match / Could not find the private key of the user: redacted-user

[tristan-k]

Steps to reproduce

1. Activate End-to-End Encryption in the NextCoud Server
2. Activate End-to-End Encryption in the iOS App
3. Create an encrpyted Folder in the iOS App
4. Activate End-to-End Encryption in the Security category of your NextCloud Account in the Web Browser

Expected behaviour

Prompt to enter the 12-word mnemonic to access the encrypted folder.

Actual behaviour

A Error Message saying: Unerwarteter Fehler: Error during verification: Message digest doesn't match

Server configuration

Operating system: CentOS

Web server:

Database: mysql

PHP version: 8.2.20

Nextcloud version: 31.0.5.1

Updated from an older Nextcloud/ownCloud or fresh install: Yes

Signing status:

Signing status

No errors have been found.

List of activated apps:

App list

$ php occ app:list
Enabled:
  - activity: 4.0.0
  - app_api: 5.0.2
  - appointments: 2.4.4
  - bruteforcesettings: 4.0.0
  - calendar: 5.2.4
  - circles: 31.0.0
  - cloud_federation_api: 1.14.0
  - comments: 1.21.0
  - contacts: 7.1.1
  - contactsinteraction: 1.12.0
  - dashboard: 7.11.0
  - dav: 1.33.0
  - end_to_end_encryption: 1.17.0
  - federatedfilesharing: 1.21.0
  - federation: 1.21.0
  - files: 2.3.1
  - files_3dmodelviewer: 0.0.15
  - files_downloadlimit: 4.0.0
  - files_pdfviewer: 4.0.0
  - files_reminders: 1.4.0
  - files_sharing: 1.23.1
  - files_trashbin: 1.21.0
  - files_versions: 1.24.0
  - firstrunwizard: 4.0.0
  - forms: 5.1.0
  - groupfolders: 19.0.4
  - logreader: 4.0.0
  - lookup_server_connector: 1.19.0
  - nextcloud_announcements: 3.0.0
  - notes: 4.12.0
  - notifications: 4.0.0
  - notify_push: 1.1.0
  - oauth2: 1.19.1
  - password_policy: 3.0.0
  - photos: 4.0.0-dev.1
  - privacy: 3.0.0
  - profile: 1.0.0
  - provisioning_api: 1.21.0
  - recommendations: 4.0.0
  - related_resources: 2.0.0
  - serverinfo: 3.0.0
  - settings: 1.14.0
  - sharebymail: 1.21.0
  - socialsharing_email: 3.3.0
  - spreed: 21.0.4
  - support: 3.0.0
  - survey_client: 3.0.0
  - systemtags: 1.21.1
  - tasks: 0.16.1
  - text: 5.0.0
  - theming: 2.6.1
  - theming_customcss: 1.18.0
  - twofactor_backupcodes: 1.20.0
  - updatenotification: 1.21.0
  - user_status: 1.11.0
  - viewer: 4.0.0
  - weather_status: 1.11.0
  - webhook_listeners: 1.2.0
  - workflowengine: 2.13.0
Disabled:
  - admin_audit: 1.21.0
  - encryption: 2.19.0 (installed 2.19.0)
  - extract: 1.3.6 (installed 1.3.6)
  - files_external: 1.23.0
  - suspicious_login: 9.0.1
  - twofactor_nextcloud_notification: 5.0.0
  - twofactor_totp: 13.0.0-dev.0
  - user_ldap: 1.22.0

Nextcloud configuration:

Config report

php occ config:list system
{
    "system": {
        "passwordsalt": "***REMOVED SENSITIVE VALUE***",
        "secret": "***REMOVED SENSITIVE VALUE***",
        "trusted_domains": [
            "nextcloud.redacted.de"
        ],
        "datadirectory": "***REMOVED SENSITIVE VALUE***",
        "dbtype": "mysql",
        "version": "31.0.5.1",
        "overwrite.cli.url": "https:\/\/nextcloud.redacted.de",
        "dbname": "***REMOVED SENSITIVE VALUE***",
        "dbhost": "***REMOVED SENSITIVE VALUE***",
        "dbport": "",
        "dbtableprefix": "oc_",
        "mysql.utf8mb4": true,
        "dbuser": "***REMOVED SENSITIVE VALUE***",
        "dbpassword": "***REMOVED SENSITIVE VALUE***",
        "installed": true,
        "instanceid": "***REMOVED SENSITIVE VALUE***",
        "mail_domain": "***REMOVED SENSITIVE VALUE***",
        "mail_from_address": "***REMOVED SENSITIVE VALUE***",
        "mail_smtpmode": "sendmail",
        "mail_sendmailmode": "pipe",
        "htaccess.RewriteBase": "\/",
        "memcache.local": "\\OC\\Memcache\\APCu",
        "redis": {
            "host": "***REMOVED SENSITIVE VALUE***",
            "port": "0",
            "timeout": "1.5"
        },
        "filelocking.enabled": "true",
        "memcache.locking": "\\OC\\Memcache\\Redis",
        "memcache.distributed": "\\OC\\Memcache\\Redis",
        "default_phone_region": "DE",
        "maintenance_window_start": 1,
        "trusted_proxies": "***REMOVED SENSITIVE VALUE***",
        "app_install_overwrite": [
            "extract"
        ],
        "defaultapp": "files",
        "maintenance": false,
        "theme": "",
        "loglevel": 2
    }
}

Are you using external storage, if yes which one: no

Are you using encryption: no

Are you using an external user-backend, if yes which one: no

Client configuration

Browser: Google Chrome 136.0.7103.114

Operating system: macOS 15.4.1 (24E263)

Logs

Nextcloud log (data/nextcloud.log)

Nextcloud log

{"reqId":"aCyhOSLCBLBi0js6QxD8DgAAANE","level":2,"time":"2025-05-20T15:35:21+00:00","remoteAddr":"2a02:3100:8415:c200:1176:f08d:5277:bcf2","user":"redacted-user","app":"end_to_end_encryption","method":"GET","url":"/ocs/v2.php/apps/end_to_end_encryption/api/v1/private-key","message":"Could not find the private key of the user: redacted-user","userAgent":"Mozilla/5.0 (iOS) Nextcloud-iOS/6.6.2","version":"31.0.5.1","data":{"app":"end_to_end_encryption"}}
{"reqId":"aCyl0_qh0Q1d9n_Z1rHCxgAAAI0","level":3,"time":"2025-05-20T15:54:59+00:00","remoteAddr":"2a02:3100:8415:c200:2df0:bcad:e59:be0e","user":"redacted-user","app":"end_to_end_encryption","method":"DELETE","url":"/ocs/v2.php/apps/end_to_end_encryption/api/v1/encrypted-files","message":"No file for owner with ID 1103","userAgent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36","version":"31.0.5.1","exception":{"Exception":"OCP\\Files\\NotFoundException","Message":"No file for owner with ID 1103","Code":0,"Trace":[{"file":"/var/www/virtual/redacted-user/html/nextcloud/apps/end_to_end_encryption/lib/MetaDataStorage.php","line":147,"function":"verifyOwner","class":"OCA\\EndToEndEncryption\\MetaDataStorage","type":"->","args":["redacted-user",1103]},{"file":"/var/www/virtual/redacted-user/html/nextcloud/apps/end_to_end_encryption/lib/Controller/EncryptionController.php","line":97,"function":"deleteMetaData","class":"OCA\\EndToEndEncryption\\MetaDataStorage","type":"->","args":["redacted-user",1103]},{"file":"/var/www/virtual/redacted-user/html/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":200,"function":"removeEncryptedFolders","class":"OCA\\EndToEndEncryption\\Controller\\EncryptionController","type":"->","args":[]},{"file":"/var/www/virtual/redacted-user/html/nextcloud/lib/private/AppFramework/Http/Dispatcher.php","line":114,"function":"executeController","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\EndToEndEncryption\\Controller\\EncryptionController"},"removeEncryptedFolders"]},{"file":"/var/www/virtual/redacted-user/html/nextcloud/lib/private/AppFramework/App.php","line":161,"function":"dispatch","class":"OC\\AppFramework\\Http\\Dispatcher","type":"->","args":[{"__class__":"OCA\\EndToEndEncryption\\Controller\\EncryptionController"},"removeEncryptedFolders"]},{"file":"/var/www/virtual/redacted-user/html/nextcloud/lib/private/Route/Router.php","line":307,"function":"main","class":"OC\\AppFramework\\App","type":"::","args":["OCA\\EndToEndEncryption\\Controller\\EncryptionController","removeEncryptedFolders",{"__class__":"OC\\AppFramework\\DependencyInjection\\DIContainer"},{"apiVersion":"1","_route":"ocs.end_to_end_encryption.encryption.removeencryptedfolders"}]},{"file":"/var/www/virtual/redacted-user/html/nextcloud/ocs/v1.php","line":49,"function":"match","class":"OC\\Route\\Router","type":"->","args":["/ocsapp/apps/end_to_end_encryption/api/v1/encrypted-files"]},{"file":"/var/www/virtual/redacted-user/html/nextcloud/ocs/v2.php","line":7,"args":["/var/www/virtual/redacted-user/html/nextcloud/ocs/v1.php"],"function":"require_once"}],"File":"/var/www/virtual/redacted-user/html/nextcloud/apps/end_to_end_encryption/lib/MetaDataStorage.php","Line":287,"message":"No file for owner with ID 1103","exception":{},"CustomMessage":"No file for owner with ID 1103"}}
{"reqId":"aCymB_qh0Q1d9n_Z1rHDNwAAAIo","level":2,"time":"2025-05-20T15:55:51+00:00","remoteAddr":"2a02:3100:8415:c200:1176:f08d:5277:bcf2","user":"redacted-user","app":"end_to_end_encryption","method":"GET","url":"/ocs/v2.php/apps/end_to_end_encryption/api/v1/private-key","message":"Could not find the private key of the user: redacted-user","userAgent":"Mozilla/5.0 (iOS) Nextcloud-iOS/6.6.2","version":"31.0.5.1","data":{"app":"end_to_end_encryption"}}

[tristan-k]

Probably related to:

• [Bug]: 3.14.0 does not create private.key for E2EE when initializing E2EE desktop#7205
• "Could not find the private key of the user" in Admin Logs #790
• E2EE Internal Error for iOS, PC/Mac works fine ios#3346
• Delete E2EE keys for fresh start server#9083
• https://help.nextcloud.com/t/e2ee-not-working-on-ios/218280/6