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I try to learn ElGamal re-encrypts scheme and I have a question about the example: How is a re-encryption done with elGamal?.

  • The $g$ value of Alice must be the same as $g$ value of Bob or not?
  • And what about of Prime $p$ value for Alice and Bob? Alice.$p$ must be the same as Bob.$p$ or not?

Thanks!

kelalaka
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Eugene
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