RE: Encryption and digital signatures

Digital signature are basically this:

You have some data that will be encrypted.
You first use that data and create a hash, using xTools GetMD5Hash()
subproc, or the Whirlpool hash (if you need stronger encryption) which is
GetSecHash(). 
Then you encrypt the hash and the data, separately, but using the same key.
The encrypted hash is your signature.
Now the hard part. You need a public key; today, xTools does not support PGP
encryption with private/public keys. So while you can do nearly everything
you want, you have the public/private key issues.


-Bob Cozzi
www.RPGxTools.com
RPG xTools - Enjoy programming again.


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Henza, Guy
Sent: Wednesday, January 11, 2006 5:04 PM
To: rpg400-l@xxxxxxxxxxxx
Subject: Encryption and digital signatures

I was asked in a hallway meeting if the AS400 can do encryption and
digital signatures.   I said SURE I've been reading about them for
years.  Now I need to find some examples.  I found xTools for encryption
is there anything out there for digital signatures?  I may need to send
files to customers/vendors with either encryption and/or digital
signatures.
 
Regards, 
 
Guy