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javapropertiesencryption-asymmetric

how to create and use encrypted Property files in Java?

I want to create a encrypted property file that stores information related to licences and some other highly sensitive data.
My Requirement during creation of encrypted Property file

  1. Once created, should not be re-writable.
  2. Once created nobody should be able to read the encrypted data.


After Creation, how I would be able to use the file in my project?

Solution

  • You can use the javax.crypto.Cipher[Input|Output]Stream for reading/writing your data; however, you will have to enforce the write-once functionality in your code... maybe be comparing the data with a SHA hash or something to ensure that it has not been changed.

    I have run across opensource and commercial license managers for Java... you may want to search around so as not to reinvent the wheel.

    Also, you will probably want to look into obfuscation tools at least for your sensitive API if you want to keep users from decompiling it.

    Hope this helps.