First a few questions:

1. Are you using binary when FTPing the file?
2. How are you opening the file?
3. What is the CCSID of the system providing the decryption key?
4. When you say you "convert string from ebcdic to ascii" are you referring
to the decryption key?
5. How do you detect that the decryption failed? Using debug of the text or
by examining an output file?

Bruce

On Fri, Feb 1, 2019 at 7:29 AM Jay Vaughn <jeffersonvaughn@xxxxxxxxx> wrote:

Curious to see suggestions on this one.
I have nothing, sorry.

But just curious why the data wasn’t sftp’d to you instead? But I’m sure
I just don’t see the whole picture of what you are working on.

Jay


On Feb 1, 2019, at 8:18 AM, Merlino, Basilio (NissanContractor) <
b.merlino-extern@xxxxxxxxx> wrote:


Dear All,

I need to decrypt some text related data coming from a supplier, i
receive the file in an ftp folder read text and decrypt it.

In order to decrypt the information i use Qc3DecryptData (AES OR RC4
alghoritym), unforntunately i encoured in the following problem

First of all let's me say that i was not able to decrypt the data coming
from vendor so i try to understand where the problem was

First of all i have written a program that encrypt and decrypt the
phrase "HELLO BY ME" with key "key encryption" and it's work fine.

I compare the result with the one coming from the following url

http://rc4.online-domain-tools.com/

and the two values doesn't match.

So my first assumption was that there is a difference beetwen ebcdic and
ascii transcodification so i try to

- convert string from ebcdic to ascii

- run encryption

but again the two values doesn't match

Anyone can direct me ? any idea ?


Thanks to All


Basilio










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