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POTomcat decrypt aes different from Java Main application
 

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  1. POTomcat decrypt aes different from Java Main application
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    <p>I have an AES encrypted byte array. When I decrypt this array in java application, everything is fine. But in a servlet container, decrypted wrong. </p> <p>Here ise my byte array </p> <pre><code> String [] str = new String[] {"41", "23", "67" ,"-124", "-56" ,"-35" ,"89", "-54" ,"-17" ,"-49" ,"-53", "-21" ,"125" ,"4", "98", "-13", "60" ,"-72", "12", "75" ,"-105" ,"-104", "107", "34", "1", "-109", "-19", "-102", "-72", "9" ,"26" ,"-39", "-60", "-15", "0" ,"112", "-5", "-86", "-7", "5" ,"75", "100" ,"94", "-47", "6", "-81", "-22", "82", "97" ,"114", "3", "-24", "-80", "67", "106", "-100" ,"-35", "-83", "54", "-95", "124", "-22", "-100", "-47" }; byte [] inv = new byte[str.length]; int count = 0; for (String s : str) { inv[count++] = Byte.valueOf(s); } </code></pre> <p>The result of Java Application </p> <pre><code>Decrypted: 000000.016*kWh|000000.007*kWh|000000.015*kWh|000000.000*kWh </code></pre> <p>My application code </p> <pre><code> byte[] keyBytes = "vikoAmrPass12345".getBytes(); SecretKeySpec key = new SecretKeySpec(keyBytes, "AES"); Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding"); cipher.init(Cipher.DECRYPT_MODE, key); byte [] out = cipher.doFinal(inv); System.out.println("Decrypted: " +new String(out)); </code></pre> <p>My web code which is works on servlet container is definitly same with above one. But the container decypted result is </p> <pre><code>'?f ??0??????b]5hJ?F*`U????.8??p@?]?u?~Nb??z?????{3??;? </code></pre> <p>What is wrong here ? </p> <p>In my application, I got encrypted byte array as </p> <pre><code>ServerSocket ss = new ServetSocket(port); Socket socket = ss.accept(); InputStream in = socket.getInputStream(); byte [] sizeBuffer = new byte[5]; in.read(sizeBuffer); byte [] dataBuffer = new byte[Integer.valueOf(""+new String(sizeBuffer)]; in.read(dataBuffer); </code></pre> <p>Encrypted data exists on <em>dataBuffer</em> array. And encryption handled in an embedded device.</p> <p>My configuration </p> <p>java 1.6 tomcat 7.1</p> <p>Thanks.</p>
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    1. USBeyt
    1. USBeyt
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    1. COPlease show *all* the details of your decryption. (And also, why are you putting all your byte values into strings? Why not just declare `byte[] inv = { 41, 23, 67 } ..."?
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      1. POTomcat decrypt aes different from Java Main application
      1. USJon Skeet
    2. CObyte[] keyBytes = "vikoAmrPass12345".getBytes(); SecretKeySpec key = new SecretKeySpec(keyBytes, "AES"); Cipher cipher = Cipher.getInstance("AES/ECB/NoPadding"); cipher.init(Cipher.DECRYPT_MODE, key); byte [] out = cipher.doFinal(inv); System.out.println("Decrypted: " +new String(out));
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      1. USBeyt
    3. CODon't put that in a comment Beyt, please edit your question instead.
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      1. POTomcat decrypt aes different from Java Main application
      1. USMaarten Bodewes
 

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