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Reviewing Quality of Password Protection: Other Programs |
PDF
The old versions of Adobe Acrobat used 40-bit encryption, which made it
possible to guarantee the recovery of a protected document regardless
to password length. PDF Password allows removing 40-bit protection either
by running the exhaustive search over all possible 40-bit keys (trillion
variants) or the quick method that uses special tables (Rainbow Tables).
Further information: PDF Password
Act!
Different versions of Act! Use different format of documents and different
concepts for implementing password protection. At the same time, all versions
do not provide due protection - in the old versions it was possible to
recover password instantly, in the new ones - the documents store hashes
from the passwords, and there is a chance to replace the password with
a known one. Further information: Act Password
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