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Why are you needing to do this? Is it to implement a licensing scheme?

-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Mike Davis
Sent: 30. september 2013 17:54
To: rpg400-l@xxxxxxxxxxxx; java400-l@xxxxxxxxxxxx
Subject: Encryption with Java and RPG?

Hi All:

I just found these lists and what a goldmine!

I'm posting this question to the RPG group and Java group because it relates
to both (I think).

My boss handed me an interesting problem ... hoping to get some pointers or
guidance here.

What I need to do is encrypt some text on the iSeries (in an RPG program),
store the encrypted data in a text field (data area, probably), and
(obviously) be able to decrypt the data.

Here's the rub ... I also need to be able to decrypt the data from one or
more Java programs. The java programs may be running on the iSeries or on a
PC.

Obviously I'll need a way to secure the encryption key ... I haven't tackled
that part yet.

Third party products aren't an option, as this is only a periodic thing (at
least that's what my boss tells me, I have my doubts).

A google search found some chapter's in the "API's at Work" book by Messrs
Vining, Pence, and Hawkins... I've already put in a request to purchase that
book,

The way my boss wants this to work is we run a command with the new data to
be encrypted ... the encrypted data is stored in the data area and displayed
to the user (one of our ops people), they copy the encrypted data and paste
it into a text file that the java program can read and decrypt. The
encryption key will probably be hard coded
(somehow) in the RPG and Java programs.

So the problems I am trying to solve are ...

1. Looking for a simple example of using the crypto routines in RPG.
2. Figure out the best crypto method that will work in both Java and RPG.
3. What format should I use when encrypting the data (I figure the routines
won't encrypt the same text in ASCII and EBCDIC the same).
Maybe Unicode?

OR ....

Is this really a fools errand ... and should I try to convince my boss that
we should do the encryption independently on both sides.

Thanks all! I appreciate all input.

Mike

(Mikey likes it! Hey Mikey!)
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