Re: Qc3DecryptData gives me a different result fromhttp://www.unsw.adfa.edu.au/~lpb/src/AEScalc/AEScalc.html -- RPG400-L

Hiya Lim,

You have 16-bytes of input data that you are trying to decrypt. However, you've told the API that the input length is 32... so who knows what other data it's receiving and trying to decrypt?

Furthermore, you've told it that the block length is 32. The normal block length for AES (according to FIPS-197) is 16. So once again, it's reading 32 bytes at a time, when you're only supplying 16 bytes, and trying to decrypt only 16 bytes.

Perhaps you're confused because you're doing everything in hex, and the hex representation is a 32-character string? Remember, there are two hex digits to represent a single byte...

Your data is only 16 bytes long.

So change this:

D algorithmBlockLen...
D 10i 0 inz(16) <-- was 32

And this:

Qc3DecryptData(myEncryptedData :16 <-- was 32

Then you should get the desired result (I've only desk-checked it, I didn't compile/run it... so who knows if I'm missing something else)

Good luck

On 6/16/2010 12:22 PM, hockchai Lim wrote:

ok. I posted a strip down version of my code in
http://code.midrange.com/f309a463e1.html.

"Dennis Lovelady"<iseries@xxxxxxxxxxxx> wrote in message
news:mailman.33137.1276708405.2580.rpg400-l@xxxxxxxxxxxxxxx

http://code.midrange.com.

Just go there. It's easy.

Dennis Lovelady
http://www.linkedin.com/in/dennislovelady
--
"All progress is based upon a universal innate desire on the part of every
organism to live beyond its income."
-- Samuel Butler

Yes. But I'm looks at all my data in Hex not the displayed char.

Does any one know the link to post code?

"Charles Wilt"<charles.wilt@xxxxxxxxx> wrote in message
news:mailman.33124.1276706560.2580.rpg400-l@xxxxxxxxxxxxxxx
Nope, it most certainly applies.

An 'A' in EBCDIC has a different hex value than a 'A' in ASCII.

Charles

On Wed, Jun 16, 2010 at 12:23 PM, hockchai Lim
<lim.hock-chai@xxxxxxxxxxxxxxx> wrote:

The web site say entered hex value, so, I'm thinking ASCII/EBCID does

not

apply in this case. I would expect Qc3DecryptData also dealing all

the

data
in hex (bit).
"Rory Hewitt"<rory.hewitt@xxxxxxxxx> wrote in message
news:mailman.33110.1276704721.2580.rpg400-l@xxxxxxxxxxxxxxx

ASCII vs. EBCID, perhaps - do you need to use iconv() either after

or

before
the data conversion?

On Wed, Jun 16, 2010 at 8:51 AM, hockchai Lim
<lim.hock-chai@xxxxxxxxxxxxxxx

wrote:

I used the Input Data: 59a10915306238b011ba322354c608e6 and AES key
:8181818181818181818181818181818181818181818181818181818181818181.

On the

http://www.unsw.adfa.edu.au/~lpb/src/AEScalc/AEScalc.html<http://www.un
sw.adfa.edu.au/%7Elpb/src/AEScalc/AEScalc.html>site

I get the result of (which is what I expected):
e3c5e2e3404040404040404040404040

But with Qc3DecryptData, I get the result of :
343581ED077DA7C156FB59CC1075D7C0B79BD2778372388ECDF908D54124870E

Any idea where or how I can figure out where I did wrong?

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