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Anonymous asked in 電腦與網際網路軟體 · 2 decades ago











1 Answer

  • 2 decades ago
    Favorite Answer

    Advanced PDF Password RecoveryThis program (Advanced PDF Password Recovery, or simply APDFPR) can be used to

    decrypt protected Adobe Acrobat PDF files, which have "owner" password set, preventing

    the file from editing (changing), printing, selecting text and graphics (and copying

    them into the Clipboard), or adding/changing annotations and form fields (in any

    combination). Decryption is being done instantly. Decrypted

    file can be opened in any PDF viewer (e.g. Adobe Acrobat Reader) without any

    restrictions -- i.e. with edit/copy/print functions enabled.

    The program is also able to convert Kinko's Document Format (KDF) files to PDF

    files (without any protection).


    Please note that APDFPR does not work with documents which have user-level

    passwords (preventing the files from being opened), if both user and owner

    passwords are unknown.


    Professional edition also 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 resonable 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 modern dual-CPU systems).


    Warning: APDFPR APDFPR Pro do NOT work on Mac computers with Virtual PC; unfortunately, it seems to be a problem of

    Virtual PC itself. Also, PDF files protected with any 3rd party

    security plug-ins such as FileOpen (FOPN_fLock) are not supported.

    詳情 : 下載 : 

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