> For the complete documentation index, see [llms.txt](https://http3-explained.haxx.se/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://http3-explained.haxx.se/ko/why-quic/why-secure.md).

# 안전

QUIC은 항상 안전하다. 이 프로토콜에는 일반 텍스트 버전이 없으므로 QUIC 연결과 협상하려면 TLS 1.3을 사용해서 암호화 및 보안을 수행해야 한다. 위에서 언급했다시피, 이는 다른 차단이나 특별한 처리 같은 고착화 문제를 방지할 뿐만 아니라 QUIC이 웹 사용자가 기대하고 원하는 HTTPS의 모든 보안 속성을 가지게 만든다.

암호화 프로토콜 협상이 이뤄지기 전 초기 핸드쉐이크 패킷에 일반 텍스트 메시지가 아주 조금 있다.


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