Are there any 7ZIP password crackers for for File Encryption?
A client says they can't accept password-protected PDFs to put in their payroll system, so I have to send them without security. I don't want to send unsecured PDFs via e-mail because e-mail is inherently insecure. I figured a good alternative was, instead of password-protecting each PDF, I could encrypt the containing folder with 7ZIP, which I got from https://www.7-zip.org/ You can see the encryption box at the bottom-right:
At first I was optimistic about this option, but a quick Google search led me to articles such as this one where apparently there are easy to find tools, such as 7z Cracker: "7z Cracker is an opensource cracking tool which can extract any password protected 7zip file". I also found this answer in this forum that talks about John The Ripper: "John The Ripper can crack these AES-256 encrypted archives." Does this mean that 7ZIP encryption is basically useless? Are these password 7zip crackers effective at circumventing this security measure? Secondly, are password-protected PDFs also this easy to break into?
TL;DR: You are fine, generate a long password (60+ chars), send the file by mail and the password by SMS, fax, snail-mail or phone call. Does this mean that 7ZIP encryption is basically useless? Short answer: No. Long answer: It depends on the password. A password cracker just tries passwords over and over again, either by trying all words on a dictionary (a very large file filled with words), or by trying all possible combinations. Given enough time, every password can be broken. But sometimes the Universe itself won't exist long enough for that. Are these 7zip password cracker effective at circumventing this security measure? Yes, if your password is trivial, or if someone ever used it somewhere. They must be unique. So generate a password, don't choose one. And while you are generating the password, create a 64-byte password and you don't need to worry for a couple thousand millennia.
But the password must be sent by another media. Sending a AES-CBC encrypted file with 120-byte password is useless if the password is the body of the email. So send the file by email, and the password by SMS, Signal message, fax, or any other media. Secondly, are password-protected PDFs also this easy to break into? If "easy" is just downloading a program and running it, yes, it's that easy. But if "easy" is actually breaking the password, it will depend entirely on the password. That 64-byte auto generated password is as close to impossible as it could be. 7ZIP password cracker/unlocker to recover 7zip password Just follow the given below instructions for 7ZIP password cracker:
- 1) Download the 7z password unlocker
- 2) Select 7z file from your device
- Choose the 7z file that has been locked and you want to unlock the password. Press “open” and proceed.
- 3) Choose the suitable recovery attack
- 4) Then, hit the “start” icon to recover 7z file password.
- 5) After the complete procedure your 7z recovered password will be displayed on your computer.