Okay, I need to write a professional and useful wiki document aboutAD (Authenticated Encryption with Data) in Korean Let me start by understanding structure and requirements.

First, document should have an H1 title, which is "AEAD" as per the given title. Then an overview or introduction section. I should explain what AEAD is, its importance in encryption, and maybe mention the modes like GCM or CCM.

Next, detailed sections with H2 and H3 headings. Let's think about the main sections. Maybe start with a definition and concept, then move to components. After that, operational mechanism, followed by examples of AEAD modes, advantages, use cases, and related standards.

For each section, I need to ensure accurate and objective information. Since the user mentioned technical terms, I should explain them in simple terms. For example, when talking about GCM, I should briefly explain what Galois/Counter Mode is. Also, make sure the content has enough depth but isn't too overwhelming.

The markdown format requires proper heading hierarchy. Use H2 for main sections and H3 for subsections. Lists, tables, and code blocks might be useful. For instance, a table comparing different AEAD modes could be helpful. Also, maybe include a code example of AEAD encryption in a language like Python, but I need to check if that's necessary. The user specified code blocks for technical content, so perhaps a code snippet would be good here.

The length should be at least 800 characters. Since the example response provided earlier was around that, I need to make sure each section is sufficiently detailed.

Starting with the introduction: AEAD is a type of encryption that provides confidentiality, integrity, and authenticity. It combines encryption and authentication into one process, which is more efficient than doing them separately. Mention that it's used in protocols like TLS 1.3 and IPsec.

Then, components: ciphertext, authentication tag, associated data. Explain each briefly. For example, associated data is not encrypted but authenticated, like headers.

Operational mechanism: Maybe split into encryption and decryption steps. Use bullet points or numbered lists here.

Examples of AEAD modes: GCM, CCM, EAX. For each, a brief description and key points. A table comparing them could be useful here, but since the user didn't specify a table, maybe just bullet points.

Advantages: Efficiency, security benefits, flexibility. Use bold or italics for emphasis if needed.

Use cases: TLS, IoT, databases. Explain how AEAD is applied in these areas.

Standards: NIST, RFCs. Mention specific standards like NIST SP 800-38D for GCM.

Need to ensure that all technical terms are explained. For example, when mentioning Galois field multiplication in GCM, add a simple explanation.

Also, check for any common mistakes or misconceptions. For example, clarify that AEAD is different from traditional encryption which might require separate MACs.

I should avoid overly complex explanations but maintain the professional tone required. Use examples to illustrate points where possible.

Let me structure the document step by step:

1. Title (H1): AEAD
2. 개요: Define AEAD, mention its purpose, and main features.
3. H2: AEAD의 정의와 개념
4. H3: 기본 개념
5. H3: 구성 요소 (ciphertext, tag, associated data)
6. H2: 작동 원리
7. H3: 암호화 과정
8. H3: 복호화 과정
9. H2: 대표적인 AEAD 모드
10. H3: GCM
11. H3: CCM
12. H3: EAX
13. H2: 장점
14. H2: 활용 사례
15. H2: 관련 표준
16. 참고 자료

In each section, provide clear explanations. For example, in GCM, mention that it uses counter mode for encryption and Galois field for authentication. In advantages, talk about single-pass encryption/authentication, reduced risk of vulnerabilities, etc.

Use code blocks if showing an example. Maybe include a Python example using AES-GCM from the cryptography library. That would make it practical.

Check for any missing information. For instance, the importance of the authentication tag length in security, or the handling of associated data.

Make sure the document flows logically from introduction to deeper sections, and ends with related standards and references.

Now, I need to write this in Korean, following the structure. Ensure that technical terms are translated appropriately or kept in English with explanations. For example, "Galois/Counter Mode" might stay in English but explained in parentheses.

Also, avoid markdown errors, like proper spacing after headings and lists. Use hyphens for bullet points and proper indentation if needed.

Double-check facts: AEAD modes like GCM, CCM, EAX are correct. TLS 1.3 uses AEAD, yes. NIST standards for GCM are SP 800-38D.

I think that's a solid plan. Now, time to put it all together in Korean markdown, making sure each section meets the requirements and the content is accurate and comprehensive.