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Date Submitted:
07/25/05
Hits: 77 Rating:  based on 0 votes
Encryption is not enough for DRMAdded by Papergrl
Description:
If you examine the ordinary PDF file you will find that a large amount of control information can clearly be seen. In other words, not everything is actually encrypted. That is a weakness since there should be no reliance upon information that has not been protected. Many document protection systems have been attacked successfully using that external control information. It may also allow others to see information that you did not want to be known. So check that all your information is encrypted, and not just the visible content.
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