Before we order a few Nitrokey storage devices, we need to make sure that encrypted data can be deleted from the device. Because we assume that wear leveling is implemented by the firmware, we would like to know where (and how) the firmware should be modified in order to make it possible to sanitize the storage space and remove encrypted files. Getting rid of the encryption keys and leaving the encrypted (thus inaccessible) data on the device is not what we’re asking.
Let us know,
Thank you.
Nitrokey Storage has a microSD cared integrated which implements the wear leveling. This is why we can’t access or modify the wear leveling directly.
The cryptographic keys are stored in a smart card and resetting the device (thus deleting the keys) is usually sufficient.