Here is everything you need to know about the "Key 7" password, why it’s used, and why you should probably stop using it. What is a Type 7 Password?
When a password like MyPassword was stored inside setup.iss , the InstallShield engine would: key 7 password decrypt
Key_byte = Cipher_byte XOR Plain_byte
You have an old CD-ROM from 2002. The setup.iss contains an encrypted Password= field, but you no longer know the password to extract the CAB files. Key 7 decrypt immediately reveals it. Here is everything you need to know about
If you have a setup.iss file from the early 2000s that is begging for a password, fire up the Python script from this article. Within seconds, Key 7 will reveal its secrets. If you are dealing with a modern .7z file with a forgotten password, put down the "Key 7" search—and start building a dictionary attack instead. The setup