"It's a stupid pointless PR exercise as under UK law you can be jailed for not giving the police passwords to encrypted data when told to do so by courts."
In that case, what needs to be done is to create a system where it is impossible to tell there is encrypted data on the drive. Encrypted data looks like garbage data, and you can disguise it as such. One might mark sectors with encrypted data as bad so they don't get overwritten, and then the only way to access the data would be to input the sector number and the encyption key. Then there is no way to prove that your drive just doesn't have a lot of bad sectors.
Of course they could decide that having a lot of bad sectors is proof enough that you're hiding data. In which case you'd have to find a way to hide the data and file tables encrypted in the free space on the drive, without the os overwrting it by accident, and without using any special markers to prevent that.
Another thing you can do is use steganography. That's where you hide data in other data by altering the data in subltle and undetectable ways. For example, hiding a text file in an image by altering the colors slightly.
Personally, I don't think a government should be allowed to charge you with a crime for refusing to reveal an encryption key, because that is akin to being forced to testify against yourself.
In that case, what needs to be done is to create a system where it is impossible to tell there is encrypted data on the drive. Encrypted data looks like garbage data, and you can disguise it as such. One might mark sectors with encrypted data as bad so they don't get overwritten, and then the only way to access the data would be to input the sector number and the encyption key. Then there is no way to prove that your drive just doesn't have a lot of bad sectors.
Of course they could decide that having a lot of bad sectors is proof enough that you're hiding data. In which case you'd have to find a way to hide the data and file tables encrypted in the free space on the drive, without the os overwrting it by accident, and without using any special markers to prevent that.
Another thing you can do is use steganography. That's where you hide data in other data by altering the data in subltle and undetectable ways. For example, hiding a text file in an image by altering the colors slightly.
Personally, I don't think a government should be allowed to charge you with a crime for refusing to reveal an encryption key, because that is akin to being forced to testify against yourself.