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Knowledge Center

How do I use Synology Cloud Sync Decryption Tool?

Last updated:Jun 30, 2021

How do I use Synology Cloud Sync Decryption Tool?

Details

Synology Cloud Sync Decryption Tool is a program that decrypts data encrypted by Cloud Sync. When an incident renders your Synology NAS inaccessible, you can download the encrypted files uploaded by Cloud Sync from the public clouds, and use Cloud Sync Decryption Tool to decrypt them.

Resolution

  1. Download Synology Cloud Sync Decryption Tool from Synology Download Center.
  2. Launch Synology Cloud Sync Decryption Tool.
  3. Select a decryption method.
    • Password: Enter the password used in the setup of your Cloud Sync encryption task.
    • Private key: Enter the private key file (private.pem) Cloud Sync automatically exported when linked to a public cloud for the first time. You can use this option if you lost your password.
  4. Select whether to decrypt a folder or a file.1
  5. Select the output folder.
  6. Click Decrypt.

Notes:

  1. Cloud Sync Decryption Tool only supports decrypting a single file or an entire folder. If you choose to decrypt a folder, all files in the folder will be decrypted and saved to the output folder.