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An implementation of a known plaintext attack on password encrypted ZIP archives (method published by Eli Biham and Paulem Kocher, see ftp://utopia.hacktic.nl/pub/crypto/cracking/pkzip.ps.gz).

For the attack to be successful you have to have at least 106 bytes of unencrypted compressed data from the given ZIP archive (the data must be compressed using the same compression method as the encrypted counterpart). Providing this, the sophisticated attack can be thousand times (or even more) faster than a brute force attack (considering non-trivial long password). The speed is affected by the amount of plaintext you have.
Adding date: 20.4.2004 17:41
GUI: no
Terminal: yes
Licence: Own
Home Page: http://www.unix-ag.uni-kl.de/~conrad/krypto/pkcrack.html
Creator: Peter Conrad
Developer company:
Alternativ SW in Windows:
SW instalation requirement:

HW instalation requirement:

Rate: 100%
Package Type Download Size in kB
source http://www.unix-ag.uni-kl.de/[..]ownload1.html 0
Added by: Martin Děcký

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