Emergency File Wipe Algorithim
Andrew Loewenstern
andrew_loewenstern at il.us.swissbank.com
Tue Sep 5 09:45:12 PDT 1995
Peter Gutmann writes in an article quoted by Christian Wettergren
> The greater the amount of time that new data has existed in the
> cell, the more the old stress is "diluted", and the less reliable
> the information extraction will be. Generally, the rates of change
> due to stress and relaxation are in the same order of magnitude.
> Thus, a few microseconds of storing the opposite data to the
^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
> currently stored value will have little effect on the oxide.
^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^
Phill Hallam writes:
> If the power is cycled as opposed to turned off only then a memory
> self test program will probably erase the data.
Assuming Peter Gutmann is correct, a memory test program "probably" won't do much.
Of course, you data must be worth quite a pretty penny for an attacker to
attempt to recover data from the oxides on the cells in your RAM.
andrew
More information about the cypherpunks-legacy
mailing list