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    <p>As I understand anyhow in order to call 3rd party web service you pass password as plain text and no security certificates are involved. </p> <p>Then I would say the easiest approach would be to store password in encrypted format (via java encryption mechanism) when the encryption/decryption key is just hard coded in the code. </p> <p>I would definitely store it on the server side (file system or db) rather then distribute and maintain it on the multiple clients.</p> <p>Here is how that could work with "DES" encryption:</p> <pre><code>// only the first 8 Bytes of the constructor argument are used // as material for generating the keySpec DESKeySpec keySpec = new DESKeySpec("YourSecr".getBytes("UTF8")); SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES"); SecretKey key = keyFactory.generateSecret(keySpec); sun.misc.BASE64Encoder base64encoder = new BASE64Encoder(); sun.misc.BASE64Decoder base64decoder = new BASE64Decoder(); ......... // ENCODE plainTextPassword String byte[] cleartext = plainTextPassword.getBytes("UTF8"); Cipher cipher = Cipher.getInstance("DES"); // cipher is not thread safe cipher.init(Cipher.ENCRYPT_MODE, key); String encrypedPwd = base64encoder.encode(cipher.doFinal(cleartext)); // now you can store it ...... // DECODE encryptedPwd String byte[] encrypedPwdBytes = base64decoder.decodeBuffer(encryptedPwd); Cipher cipher = Cipher.getInstance("DES");// cipher is not thread safe cipher.init(Cipher.DECRYPT_MODE, key); byte[] plainTextPwdBytes = (cipher.doFinal(encrypedPwdBytes)); </code></pre>
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    1. POJava - encrypt / decrypt user name and password from a configuration file
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    1. USGennady Shumakher
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    1. COWhere does "Your secret Key phrase" come from? If that source is secure, why not use it to hold the actual password?
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    2. COAs I mentioned the key phrased is hardcoded in java class, alternately it could be stored in data base. Using password itself would require to recompile the code every time the password is changed.
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      1. USGennady Shumakher
    3. COanyone who is capable of getting access to the file can also get access to your code and decompile it (or simply use it) to obtain the key. Microsoft tried something similar to protect the SAM and it was almost immediately broken.
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      1. USfrankodwyer
 

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