I'm far from an expert on this, but I'm surprised that no one has pointed out:
http://www.schneier.com/paper-secure-logs.html
A classic paper on how to do just this. IIRC correctly, it describes a scheme to add a digest to each log record/line which includes the digest of the prior record/line. So, in order to tamper with a record you have to tamper with all the following records/lines as well. Security by induction;)
~rmp
I'm far from an expert on this, but I'm surprised that no one has pointed out: http://www.schneier.com/paper-secure-logs.html A classic paper on how to do just this. IIRC correctly, it describes a scheme to add a digest to each log record/line which includes the digest of the prior record/line. So, in order to tamper with a record you have to tamper with all the following records/lines as well. Security by induction ;)
~rmp
IIRC, it doesn't support HDTV, but EDTV (or 480p). And that's if you purchase the extra Component Video adapter. ~rmp
Or perhaps, "Great Walls of Fire"?
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