RE: Decrypt with QC3DECDT

Looking at it again, the clear data length is set to 65535 and the original unencrypted field was only 6 bytes.

decryptData...
B EXPORT
decryptData...
PI 65535A
argData 65535A const varying
options(*varsize)
argInLen 10I 0

svOutData S 65535A

D svOutDataLen S 10I 0
D Len S 10I 0
D svBytes S 52A
/free
svOutData = *BLANKS;
len = %size(svOutData);
len = %len(%Trim(argData));
// API
decryptDataAPI(argData: %len(%Trimr(argData)):
QC3D0200: 'ALGD0200':
keyDesc: 'KEYD0200':
cryptoPro: cryptoDev:
svOutData: %size(svOutData): svOutDataLen:
stdError);

Subject: Re: Decrypt with QC3DECDT
From: jon.paris@xxxxxxxxxxxxxx
Date: Thu, 21 Nov 2013 10:02:33 -0500
To: rpg400-l@xxxxxxxxxxxx

Well there are probably circumstances where 16 bytes may well expand to more than 50. Assuming that normal compression techniques are in play then (say) 60 blanks if included in the encrypted string would probably compress down to 3 or 4 bytes.

Why not make the field bigger and see what you get?


On 2013-11-21, at 9:50 AM, Jon S <rvrratjon@xxxxxxxxxxx> wrote:

I am trying to use QC3DECDT to decrypt an encrypted field which was also encrypted with QC3DECDT. Sometimes (6 out of 2381 records ) I am getting CPF9DD6 which is "Length of area provided for output data is too small.". I have my clear data output length set to 50 which should be plenty big, as the first one I am getting an error on is only 16 characters encrypted. Can anyone help?

Thanks, Jon

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Jon Paris

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www.SystemiDeveloper.com




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