{"p":"can-20","op":"mint","tick":"can","amt":"1000","rows":[{"df":"qa","content":[{"q":"How is the communication between etcd and validator in a blockchain ensured to be secure?","a":"Digital Certificate Verification: Identity verification is performed on both parties of the communication through digital certificates to ensure the authenticity and reliability of the identities of  both parties. etcd acts as the server-side and needs to issue digital certificates, which are provided to the validator; the validator needs to carry its own digital certificate for identity authentication."}]}],"pr":"593bc68e7006f8de196c6a2ca9009726ddd2a8e55c76da6d3ec3d96b1d55dd3d"}