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I need to use ElGamal for a project of critical importance in terms of confidentiality. My frustration is that I have not been able to find a reliable, industry-tested implementation of ElGamal asymmetric encryption in Java. I have found these so far:

They do not seem reliable and well-maintained to me. Any suggestions?

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  • Did you have a look at BouncyCastle?
    – SEJPM
    Commented Oct 28, 2019 at 15:34
  • You may want to ask on Crypto.SE though whether ElGamal is actually the right and best solution to the problem you're having, given that it's usually only good in a select few, exotic situations.
    – SEJPM
    Commented Oct 28, 2019 at 15:40

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As @SEJPM notes in the comments, the well-known Bouncy Castle library has an implementation of ElGamal asymmetric encryption. Here are some examples of how to use it.

I've successfully used Bouncy Castle in a few projects so far, but not this particular type of encryption, so I can't comment on the specific reliability of this component.

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