PCs#12 password protection. CRACK(1) is distributed as free Open Source software and comes with no warranties. This software does not alter your computer's software; it is compatible with all previous versions of PDF crack and supports all current versions of Unix operating systems. Crack(1) requires the GNU PDF Toolkit library. Crack(1) provides a user-friendly interface that handles a number of PDF file operations, including password recovery and output to standard output, or an alternative output, as shown below. Options: crack -h -l -a -n -c -f -o -t -y -v -C -c -v -i -h -l -o -c -v -S Crack is a simple tool that supports the recovery of passwords from files that share a common character set (.pdf, .doc, .docx, .pdf) or which contain passwords in plaintext. Crack supports all characters in the U+00E1 to U+006B Unicode range of the ISO 8859-1 character set. If your PDF is not encrypted with PCs#12 passwords, it may be unreadable. This is a consequence of the way the password is encrypted when it is written in the PDF and the password are not broken into chunks. The best way to protect your password from being broken is to never store it in the PDF itself. You can generate a passphrase containing the password and store it inside the PDF as a string separated from the password with U+000C and inserted as the first character in the passphrase. The same string can be used to encrypt your file and keep it safe for the next user. Crack should help you find passwords in pdf-documents. It does this by searching across a file for those that have “pass” embedded in them. If we consider the first character of the password's name, a common character used in passwords is usually just “pass”. Passwords can be stored in plain text. All you need to do is store the password in a file. Crack does not perform any checks on the data you are searching for. This makes it possible for brute force attacks to be performed using brute force attacks.