How to encrypt the content while you tar or gzip something?

[Donald23]

Sometime I need give some password when tar or gzip something like "ZIP" on MS-Windows OS.
Does anybody know how to put it into reality?

[Steven E. Protter]

You might want to get a product like pgp pretty good privacy from http://www.pgp.com

You'd be best to simply post the file on a non-anonymous ftp server and require a user id and password to download.

Even better, secure ftp, which comes with HP Secure Shell(port of openssh).

SEP

[Donald23]

secure FTP??
U might mis-understand me or I mis-understand you. :)

I have some file important. I wanna leave them on HP-UX server. If I leave them there originally, everybody can see the files such as source code. So, I should gzip them and only correct password can un-gzip them.
This is my question.
My understanding is I should install some special SW to have such a function, right?

[RAC_1]

crypt < "your_file" > cryped_file.

This will ask you for password, keyin the password you want.

You may further tar/gzip this file.

For uncrypting the file.

crypt < "crypted_file" > uncrypted file

[James A. Donovan]

If you just want something simple, then take a look at the crypt command. The key could be cracked by someone who wants to go to a little effort, but the same is true of the windows-based ZIP passwords.

$ man crypt

[Patrick Wallek]

If you are concerned with peopel reading or looking at files they shouldn't why not just use basic unix security? Set the permissions on the files to be read-only for the owner of the file and then create an id that no one has the password and change the ownership of those files, and the directory those files are in, to that id?

You can very easily lock down the files so that they can not be viewed by your average user on the system.

[Mark Grant]

Why don't you just get "zip" from

http://hpux.connect.org.uk/hppd/hpux/Misc/zip-2.3/

and zip with the "-e" option to add a password.

[Lisa Sorbo]

if you use the referenced Zip -e to password protect - I assume the Windows user unzipping with winzip or pkzip will be able to supply the same password and unzip it?
Can the password be passed to the UNIX Zip process with a environment variable or source file rather than a terminal prompt?