File compression and encryption

[vinod_25]

Hi Techies,

I am looking for a file compression and encryption Unix native command.

Also let me know the maximum file limit that can be compressed and encrypted.

I know there are third-party softwares like PGP which can do my job but need only unix native commands or scripts

Thanks

Vinod

[Ganesan R]

Hi Vinod,

For compression you can use compress and gzip commands.

Secure shell is using it's own encryption mechanism to transfer the files like PGP.

[Dennis Handly]

>let me know the maximum file limit that can be compressed

compress(1) will handle any size. gzip that comes with HP-UX will not handle more than 2 Gb unless you use a cat(1) pipe.

[Ganesan R]

Hi,

Use crypt command if you wish to stick with unix native command. syntax are below.

For encrytion.

#crypt filename.x
Key:xxxxxx

For decryption.
#crypt Key:xxxxxx

To open a encrypted file in vi
#vi -x filename.x
Key:xxxxxx

[VK2COT]

Hello,

You already got the basic information.
Note that Unix crypt is relatively weak.

One of the improvements is ccrypt.
It was designed as a replacement for the standard Unix crypt utility.

ccrypt is based on the Rijndael cipher, which is the U.S. government's chosen candidate for the Advanced Encryption Standard:

http://ccrypt.sourceforge.net/

Of course, there are many more choices.

If you use HP-UX 11.31, you could
even set up an Encrypted File System (EVFS).
I recently taught the updated course
H3541S (HP-UX Security) where EVFS is
part of the labs and one of the modules...

Cheers,

VK2COT

[vinod_25]

Thanks everyone !!!

Glad to have quick response

Cheers !!

Vinod

[Dennis Handly]

>Thanks everyone !!!

If you are happy with the answers you were given please read the following about reopening threads and assigning points:
http://forums.itrc.hp.com/service/forums/helptips.do?#41
http://forums.itrc.hp.com/service/forums/helptips.do?#33