{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"What are the mathematical principles behind ElGamal encryption in blockchain?","a":"Encryption process: The sender chooses a random number y, calculates  the encrypted ciphertext. The encryption formula is"}]}],"pr":"804dfa52b143dea453507d0a6d202d7f9bb9531fbea1eaeb6a9ba00324c94f35"}