Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

DES

Posted on 2004-09-09
9
Medium Priority
?
323 Views
Last Modified: 2013-12-26

 I would like encrypt a string using java from Unix and send this encrypted text to .net server to decrypt. Below are the steps I would like to take:

Java - 1. Create MD5 has of string.
Java - 2. Encrypt using DES

send this string to .net; using vb.net I would like to:

VB.net  - 1. Unencrypt using DES
VB.net - 2. unhash MD5 string.

Is this possible ? If so, could you provide sample code ?

Thanks.
M
 




0
Comment
Question by:madhu_experts
  • 4
  • 2
9 Comments
 
LVL 85

Accepted Solution

by:
ozo earned 1000 total points
ID: 12023891
unhashing an MD5 string is very difficult
0
 
LVL 45

Assisted Solution

by:sunnycoder
sunnycoder earned 1000 total points
ID: 12024156
ozo is right ... here is what you can do

Java - 1. Create MD5 hash of string.
Java - 2. Encrypt string and hash using DES

send this string along with encrypted hash to .net; using vb.net I would like to:

VB.net  - 1. Unencrypt string and hash using DES
VB.net - 2.  recalculate MD5 hash for the decrypted string.
VB.net - 3. Comapre this calculated hash with the decrypted hash ...

For the source code, you may get better replies if you post the question in either Java or VB.net TAs

http://www.experts-exchange.com/Programming/Programming_Languages/Java/
http://www.experts-exchange.com/Programming/Programming_Languages/Dot_Net/VB_DOT_NET/
0
 
LVL 45

Expert Comment

by:sunnycoder
ID: 14361159
Disagreed ... It cannot be done and it has been said so
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 20

Expert Comment

by:Venabili
ID: 14361198
Actually *something* can be done and the Asker was sent to other areas for coding ;) Thus the delete- no refund.
But Yes - I agree - what he initially required is not possible.
0
 
LVL 45

Expert Comment

by:sunnycoder
ID: 14361275
- What can be done has been suggested ... Knowing what to code and coding it are two different things ... Trying to code something which is not possible is likely to waste some time ...

- The original question "Is this possible ? If so, could you provide sample code ?" stands answered, no it cant be done.

- DES, I believe, has export restrictions ... I am not sure how safe would it be for EE to host the code on its servers.

-  Moreover, the question is posted in Unix Programming TA .. It is unfair to expect us to be able to code in all languages esp. VB.NET ;-)

- If you still feel help was insufficient ... may I recommend a PAQ/No Refind with a lower grade?

Your call!
0
 
LVL 20

Expert Comment

by:Venabili
ID: 14361343
Actually I think he had mistaken the area ;))

However - CHANGED RECOMMENDATION: Split points : ozo and sunnycoder
0
 
LVL 45

Expert Comment

by:sunnycoder
ID: 14361423
:-)
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction: Database storage, where is the exe actually on the disc? Playing a game selected randomly (how to generate random numbers).  Error trapping with try..catch to help the code run even if something goes wrong. Continuing from the seve…
Introduction: Dialogs (1) modal - maintaining the database. Continuing from the ninth article about sudoku.   You might have heard of modal and modeless dialogs.  Here with this Sudoku application will we use one of each type: a modal dialog …
This video will show you how to get GIT to work in Eclipse.   It will walk you through how to install the EGit plugin in eclipse and how to checkout an existing repository.
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day. …

927 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question