Sorry. I am not able to give you more points. I was hoping there is more an easier way of find out what is wrong without having to study and understand DES inside out.
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Decipher DES Encryption
Hi all,
I have an encryption source code written in C++. The person who wrote the program has left.
Now, I need to have an equivalent encryption in Java.
From the code, it seems to be using DES encryption. (There is function named DES ).
I also think that ECB cipher mode is used because I only need to provide the key and the string to encrypt into the function. I need not provide an initialization vector.
For now, I skip the question on the padding schema by providing an 8 character string to encrypt.
Can anyone teach me how I would be able to find out if indeed ECB mode is used? If not, what is the cipher mode used and the initialization vector.
Rewriting the entire C++ code into Java is not an option.
Thanks.
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by: TomasHelgiPosted on 2009-11-03 at 00:59:42ID: 25727094
Hi!
Here are some examples to look at
http://java.sun.com/j2se/1
http://www.java2s.com/Code
http://sharkysoft.com/arch
Hope this helps.
Regards,
Tomas Helgi