Decrypting a .c11 file or .c11.zip file bundle
These instructions assume you have installed the Confidencial desktop app. You can also decrypt a .c11 file using the web app.
These instructions show you how to decrypt a Confidencial-protected file. Individual files that are protected with Confidencial’s desktop or web app (and are not natively-supported) typically ends with a “.c11” file extension, while a file bundle (that contains multiple Confidencial-protected files) typically ends with a “.c11.zip” extension.
Start by double-clicking the .c11 file; this will open the Confidencial desktop app
- Drag and drop the Confidencial protected file into the encryption box or click choose files and select the file in the Encryption Tools page
![notion image](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F120cb36b-039d-4c6c-9054-62d49e4ebbac%2FUntitled.png?table=block&id=74d798b1-7d3e-4c82-afe8-4ad2c8fdb4b3&space_id=171bfddf-485b-4a4a-a69a-ab8c29df4f58)
- Click Decrypt
![notion image](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2F095273a2-e8d4-4b9f-bfed-78d8b7e0d6d9%2FUntitled.png?table=block&id=03bf5f0b-e02f-44da-8b32-ecfcc5db0ee7&space_id=171bfddf-485b-4a4a-a69a-ab8c29df4f58)
- If the protected (encrypted) file is a .c11 file, you can save an unprotected (decrypted) version of the file by clicking Save File. If the protected file is a .c11.zip file (a file bundle), clicking Save File will allow you to save a zip file containing unprotected versions of each file within the bundle.
![notion image](https://www.notion.so/image/https%3A%2F%2Fs3-us-west-2.amazonaws.com%2Fsecure.notion-static.com%2Fe79f1eda-669d-4d2a-b96f-d15be33bce50%2FUntitled.png?table=block&id=f25bcf18-88fe-48ad-83d7-faca23ac3e07&space_id=171bfddf-485b-4a4a-a69a-ab8c29df4f58)
The completes decryption of Confidencial-protected files. These unprotected files are now available to be opened in their native viewers/editors.
Following use (viewing and/or editing), it is strongly recommended to re-encrypt the unprotected file(s) and permanently remove (delete + empty trash) the unprotected versions from your disk