18Eki
Reliably destroy all information on magnetic disk through digital medium
In a scenario where a person wants to give away their device (magnetic disk included), leaving the disk usable for the receiver, how might that person go about destroying ALL data (except firmware) on the disk only via a digital medium? Encryption is not an answer, because the disk needs to be used by the receiver. Assume no encryption was used before.
- Is one zero pass enough?
- Is one random pass enough?
- If not, then what method should be used?
- Can the same method be effective for an electronic disk?
under the assumption that the adversary is theoretically able to exercise any technique to recover the data
