about:PDF Password Cracker Professional edition allows to search for "owner" and "user" passwords with brute-force and
dictionary attacks, effectively optimized for speed (however, don't expect to recover long passwords in a reasonable
time with these attacks). In addition, it has Key search attack, which guarantees the decryption (regardless the
password length and complexity) of PDF files that use 40-bit encryption (the attack takes about 3-4 days on fast CPU
systems).
کد:
http://rapidshare.com/files/44448875/PDF_Password_Cracker_3.0.zip
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