john doe writes:
On 8/21/2020 9:11 PM, David Christensen wrote:On 2020-08-21 11:24, Linux-Fan wrote:
[...]
Encrypt on Linux: $ 7z a -ptestwort -mhe=on secret.7z secret.txt Decrypt on Windows: Double-Click or use commandline: % 7z x -o. secret.7zSo, the recipient must install 7-Zip on their Windows computer?
In that example: Yes or use a 7z.exe obtained from the website without installation. [...]
To the OP, look at creating a self extracting archive (not sure if it works from Linux to Windows though).
It works from Linux to Windows, but it is trickier than I had imagined: On Linux: * Go to https://www.7-zip.org/download.html and download 64-bit x64 * Extract file 7z1900-x64.exe with 7z. $ mkdir sub $ 7z x -osub 7z1900-x64.exe * Copy 7z.sfx from the extracted installer $ cp sub/7z.sfx . * Create SFX archive for Windows $ 7z a -mhe=on -ptestwort -sfx7z.sfx mysfx.exe secret.txt * Send file `mysfx.exe` to the Windows user On Windows: * Run `mysfx.exe` -- it prompts for the password (`testwort`). I nowdays prefer the portable/installed version over SFX archives because uncommon executables are often rejected by antivirus software (especially .exe attachments to e-mails are prone to being deleted for security reasons...). Although most scanners seem to be fine with a generated SFX archive at the moment: https://www.virustotal.com/gui/file/e2dd36862c27e1551916ed3e773a55ecedf2b35e658522fa982369cc90eaf488/detection [...] HTH Linux-Fan
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