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How to decrypt a file in UNIX?


 
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# 8  
Old 08-23-2013
Quote:
Originally Posted by hergp
As I said, openssl is a little picky, every encoded line (except the last one) has to be 64 characters long.

Code: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WSIsIldJIiwiNTQzMDE0OTA5IiwiQkFER0VSIFNIRUVUIE1FVEFMIiwiNTI5IE4g
TU9OUk9FIEFWRSIsIiIsIkdSRUVOIEJBWSIsIldJIiwiNTQzMDE0OTA5IiwiMjQy
MiIsIjEwMDI2MjQyIiwiSW5ncmFtIE1pY3JvIC0gMTAwMjYyNDIiLA0KIkMxMjQ1
MzEiLCJWb2x1bWUgUFNHIE5vdGVib29rcyBOQk8iLCIiLCJENjQ3ODAxIiwiIiwi
IiwiOC8yLzIwMTMgMTI6MDA6MDAgQU0iLCIzMjE3Mzc4MjEiLCJEOEU2NlVUI0FC
QSIsIjExIiwiIiwiTkVUR0FJTiBURUNITk9MT0dJRVMgSU5DIiwiQ0VOVEVSUyBG
T1IgWU9VVEggJiBGQU1JTElFUyIsIlBPIEJPWCAyNTE5NzAiLCIiLCJMSVRUTEUg
Uk9DSyIsIkFSIiwiNzIyMjUxOTcwIiwiQ0VOVEVSUyBGT1IgWU9VVEggJiBGQU1J
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MjA0MTUxMSIsIkNFTlRFUlMgRk9SIFlPVVRIICYgRkFNSUxJRVMiLCI2NTAxIFcg
MTJUSCBTVCIsIiIsIkxJVFRMRSBST0NLIiwiQVIiLCI3MjIwNDE1MTEiLCIyNDIy
IiwiMTAwMjYyNDIiLCJJbmdyYW0gTWljcm8gLSAxMDAyNjI0MiIsDQ==

Thanks,its working & i am able to see the actual data but is there any way to see the actual data without resizing it to 64? Since that needs to be done manually,but i dont want to do it manually for every file.....
# 9  
Old 08-23-2013
There are other tools, like base64 from GNU coreutils, and also quite a few online decoders, like http://www.base64decode.org/. If your files are not too big, the online decoders might be useful.

Last edited by hergp; 08-23-2013 at 05:09 AM..
# 10  
Old 08-23-2013
On my recent Linux:
Code:
base64 -d file
ClaimNumber,ClaimDealType,RejectionReason,DealNumber,SalesOrderNumber,HPSalesOrderNumber,InvoiceDate,InvoiceNumber,SKU,Quantity,SerialNumber,BillToName,EUserName,BillToAddress1,BillToAddress2,BillToCity,BillToState,BillToZipCode,ShipToName,ShipToAddress1,ShipToAddress2,ShipToCity,ShipToState,ShipToZipCode,EndUserName,EndUserAddress1,EndUserAddress2,EndUserCity,EndUserState,EndUserZipCode,BatchNumber,CompanyLocationID,DistributorName
"C124532","Volume HPN Switching Routing Applications Accessories NBO","","D721758","","","8/1/2013 12:00:00 AM","402561411","J9727A#ABA","2","","CAMERA CORNER CONNECTING POINT","BADGER SHEET METAL","GE COMMERCIAL DISTRIBUTION FIN CORP","DEALER #108250","WILLIAMSVILLE","NY","142210000","BADGER SHEET METAL","529 N MONROE AVE","","GREEN BAY","WI","543014909","BADGER SHEET METAL","529 N MONROE AVE","","GREEN BAY","WI","543014909","2422","10026242","Ingram Micro - 10026242",
"C124532","Volume HPN Switching Routing Applications Accessories NBO","","D721758","","","8/1/2013 12:00:00 AM","402561411","J9735A","2","","CAMERA CORNER CONNECTING POINT","BADGER SHEET METAL","GE COMMERCIAL DISTRIBUTION FIN CORP","DEALER #108250","WILLIAMSVILLE","NY","142210000","BADGER SHEET METAL","529 N MONROE AVE","","GREEN BAY","WI","543014909","BADGER SHEET METAL","529 N MONROE AVE","","GREEN BAY","WI","543014909","2422","10026242","Ingram Micro - 10026242",
"C124531","Volume PSG Notebooks NBO","","D647801","","","8/2/2013 12:00:00 AM","321737821","D8E66UT#ABA","11","","NETGAIN TECHNOLOGIES INC","CENTERS FOR YOUTH & FAMILIES","PO BOX 251970","","LITTLE ROCK","AR","722251970","CENTERS FOR YOUTH & FAMILIES","6501 W 12TH ST","","LITTLE ROCK",user@userPC:/mnt/9/$  & FAMILIES","6501 W 12TH ST","","LITTLE ROCK","AR","722041511","2422","10026242","Ingram Micro - 10026242",

It obviously consists of \r\n terminated liens.
# 11  
Old 08-27-2013
Quote:
Originally Posted by saga20
Thanks,its working & i am able to see the actual data but is there any way to see the actual data without resizing it to 64? Since that needs to be done manually,but i dont want to do it manually for every file.....
Why do it manually, that sounds very tedious and unpleasant? Write a quick shell script to reformat it automatically.
# 12  
Old 08-28-2013
Here is an awk-script that can do the job:
Code:
BEGIN {
    S = "";
}
{
    S = S $0;
    while (length(S) > 64)
    {
        print substr(S,1,64);
        S = substr(S,65);
    }
}
END {
    print S;
}

Usage:
Code:
awk -t script.awk <input >output

# 13  
Old 08-28-2013
Quote:
Originally Posted by hergp
Here is an awk-script that can do the job:
...provided that the file is not longer than the maximum line length. This limitation is true for this and all similar solutions (using sed, awk, fmt, etc.).

Wouldn't it be easier to use

Code:
fmt -64

instead?

I hope this helps.

bakunin
# 14  
Old 08-28-2013
Quote:
Originally Posted by bakunin
...provided that the file is not longer than the maximum line length.
If you look closely, you'll find, that the working string S will never be longer than the longest line of the input file plus 63. The script adds one line to S and then writes 64 character portions to the output file until S is shorter than 64 characters.

The easiest way would be to use the base64 utility from the GNU coreutils, because it does not care about the proper 64-character-linelength, but it is not available everywhere.

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