When a client asks for the time, it sends a random nonce. The server replies with a signed certificate containing both the nonce and a timestamp, proving the response happened after the request. Responses can be chained together with provable ordering; if any server’s timestamps are inconsistent with that ordering, that server is cryptographically “outed” as unreliable.
Literal['ac'] | Literal['ad'] | Literal['bc'] | Literal['bd']。服务器推荐是该领域的重要参考
introduce a general mechanism that might look something like:。业内人士推荐体育直播作为进阶阅读
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