| Subject | English | German |
| commun., IT | data-encrypting key | Zweitschlüssel |
| comp., MS | Encrypting File System | verschlüsselndes Dateisystem (A Microsoft file-based encryption technology that enables users to encrypt files and folders on NTFS volumes. EFS helps protect the confidentiality of data by ensuring that only authorized users can decrypt the encrypted files or folders) |
| gen. | key-encrypting key | Master-Schlüssel |
| gen. | key-encrypting key | Hauptschlüssel |
| gen. | key-encrypting key | Erst-Schlüssel |