{"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":"Key generation: Choose a large prime number p, and randomly select an integer a, calculate the public key and  private key. The public key is (a, p), and the private key is (a, x), where x is a random integer."}]}],"pr":"0f8d654f67456aa4011b87f8187d882b7639544e5dc9719f26f666b9e2332f79"}