8

I have 7z on windows , and I want to encrypt 1 txt file with AES256 via 7z command line.

How can I do it please?

7

To make the answer simple just use the switch -p which means Set Password with the default encryption which is AES.

The example below will encrypt the file or folder and prompt for a password:

  • 7z a -p Zip_File_Name File_2_zip.txt

The following example will auto add the password to the file for you.

  • 7z a -pPassword Zip_File_Name.7z File_2_Zip.txt

The other switches used above are:

7z a -p -mhe=on Zip_File_Name.7z File_2_Zip.txt

 -pPassword   ==  Auto add password without being prompted
 -mhe=on      ==  Means to encrypt the file names in archive too.
0
-1
7za u -mx -mhe -pPASSWORD ARCHIVE-FILE-NAME.7Z SOURCE-FILE-SPEC

Any time you use the .7z format, the file is AES-256 encrypted.

4
  • Can you please explain me what is the arguments u and mx and mhe ? Thank you Nov 22 '18 at 4:14
  • 1
    One issue per question, please, as per house rules. dotnetperls.com/7-zip-examples offers details.
    – K7AAY
    Nov 22 '18 at 23:28
  • 2
    Is it documented somewhere? I can see that the -mem switch (EncryptionMethodID) is available for zip type. Documented here: sevenzip.osdn.jp/chm/cmdline/switches/method.htm - but the documentation does not say anything about the cipher used for other types. So how do you know?
    – nagylzs
    Nov 13 '19 at 17:16
  • 1
    Asking what your answer means is not against the "house rules"! If anything, giving a literal answer to the question without any explaination is against them. Sep 18 '20 at 20:14

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.