[andy]

Jeżeli to ZIP, to jest BARDZO wielka szansa na złamanie tego, bo wtedy jeszcze nie stosował on AESa.

• 2.0: (1993)[1] File entries can be compressed with DEFLATE and use traditional PKWARE encryption.
• 2.1: (1996) Deflate64 compression
• 4.5: (2001)[9] Documented 64-bit zip format.
• 4.6: (2001) BZIP2 compression (not published online until the publication of APPNOTE 5.2)
• 5.0: (2002) DES, Triple DES, RC2, RC4 supported for encryption (not published online until the publication of APPNOTE 5.2)

Do złamania polecam http://hashcat.net/oclhashcat