{"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":"b22abd69481c9dda64d132a0837a37c74f9cb0b14208a19df322da3eed64ad43"}