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From "Rio" <>
Subject Re: About Wrap Key
Date Thu, 27 Sep 2007 05:59:03 GMT
    yes, I didn't use the IV for my test case
  ----- Original Message ----- 
  From: Vishal Mahajan 
  Sent: Thursday, September 27, 2007 1:55 PM
  Subject: Re: About Wrap Key

  When using TripleDES the resulting cipher text is prefixed by an Initialization Vector (IV)
which is probably different for the two different wrap operations. Did you try and unwrap/decrypt
the wrapped key in the two cases and see if that results back in the same key?


  on 09/26/2007 5:36 PM Rio wrote:

            I found a problem as follows

            Key toBeWrappedKey = Generator("DESede", 168);       
            Key wrapKey = Generator("DESede", 112);   

            Cipher cipher = Cipher.getInstance("DESede/CBC/ISO10126Padding");
            cipher.init(Cipher.WRAP_MODE, wrapKey);
            byte[] wrappedKey = cipher.wrap(toBeWrappedKey);
            System.out.println(new String(wrappedKey));  // result 1
            XMLCipher xcipher = XMLCipher.getInstance(XMLCipher.TRIPLEDES);
            xcipher.init(XMLCipher.WRAP_MODE, wrapKey);
            EncryptedKey ek = xcipher.encryptKey(getEncryptedData(), toBeWrappedKey);
            byte[] wrappedKey2 = Base64.decode(ek.getCipherData().getCipherValue().getValue().getBytes());
            System.out.println(new String(wrappedKey2));   // result 2

            Why the 2 results are different ?


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