Learning the following methods, you can easily crack a document that has a password to protect it!
1, first use Word 2003 to open a password-protected document (original Doc file), this document can be created by Word 2000/xp (2002)/2003;
2, select "File → Save as Web page" in the menu, save as HTML file and then close Word;
3, with "notepad" or other word processing software to open the previous step of the HTML file saved;
4, look for "Unprotectpassword", "and" between the password for you to encrypt the hexadecimal format.
5, the record password character, for example in this example "3e36c48a", closes "notepad";
6. Use the hexadecimal file editor (for example, Winhex) to open the original doc file in 16 (HEX) format;
7, reverse order to find records of hexadecimal password characters, such as in this case to find "8A C4 3E";
8, will find the 4 double bytes are covered with "0", save the file, close the 16-file editor; (believe that even if the cracked experience of the people to step 6~8 operation is also a breeze)
9, use Word to open the original doc file, in the menu select "Tools → remove document protection", the password is blank.
At this point, the password-setting "Protect Document" is completely cracked and is no different from a document that is not protected.