| Extension | 描述 | 瀏覽次數 |
| egisenc | eDataSecurity Encrypted File | 39459 |
| emc | Striata Encrypted E-mail Attachment File | 31208 |
| flk | File Locker Encrypted File | 30967 |
| hds | Windows Digital Right Management File | 18354 |
| icd | SafeDisc Encrypted Executable File | 32574 |
| kgb | KGB Archive File | 29974 |
| kp2 | Kruptos Encrypted File | 27233 |
| kwm | WebMoney Private Key File | 66990 |
| mssign | Digital Signature File | 37986 |
| p7m | S/MIME Encrypted File | 86833 |
| pem | Privacy Enhanced Mail Certificate File | 51520 |
| pkk | Private Key File | 24074 |
| sw2 | Softwrap Licence Control File | 24462 |
| tns | TNS File | 5917 |
| vlt | WinVault Container File | 27127 |
| wses | WinSesame Encrypted File | 22385 |