Where is encryption passphrase stored on Synology NAS?
Instead, a single, pre-programmed wrapping passphrase (KEK) is used to encrypt the encryption passphrase (MEK). As a result, both the MEK and the KEK can be stored on the hard drive (if the user adds their key to the DSM Key Manager); both can be extracted from the cold device, the MEK unwrapped and used to decrypt the data.
What is the encryption key for always encrypted?
Always Encrypted uses a key to encrypt one or more columns in a table; and thus, we call this key the column encryption key, or CEK. The CEK is used on the client to encrypt and decrypt values in whichever column – or columns – you apply the CEK to.
How is data encrypted and never decrypted?
So data is encrypted not just at rest, but also in flight. Furthermore, the encryption keys themselves – which are essential for both encrypting and decrypting – are not stored in the database. Those keys stay with you, the client.
Are there any NAS that support AES encryption?
Home users and small offices are served by two major manufacturers of network attached storage devices (NAS): QNAP and Synology, with Western Digital being a distant third. All Qnap and Synology network attached storage models are advertised with support for hardware-accelerated AES encryption.
Can a passphrase for a file be changed?
The encryption passphrase cannot be changed without decrypting and re-encrypting all data. In addition, file names stored in encrypted folders cannot contain more than 143 Latin characters in their names.
Can a DSM cache the encryption key on an external USB?
If the user opts to store the encryption key on an external USB device, DSM prompts changing the default wrapping passphrase. However, users can still use that key to make the encrypted volumes automatically mount on startup. To facilitate that, DSM caches the wrapping passphrase.