# Android Security and Privacy (Android)

> Android 보안 및 개인정보 보호: 암호화, Keystore, 생체 인증, SSL/TLS, 난독화, GDPR

- 18 면접 질문
- Senior
- [면접 질문: Android](https://sharpskill.dev/ko/technologies/android/interview-questions.md)

## 1. ProGuard와 R8의 차이점은 무엇인가요?

**답변**

R8은 ProGuard의 후속 도구로, Android Gradle Plugin(버전 3.4 이상)에 직접 통합되어 있습니다. shrinking, 난독화, 최적화를 단일 단계로 결합하여 더 빠르고 효율적입니다. R8은 ProGuard 규칙과 하위 호환되며 release 빌드에서 기본적으로 활성화되어 있습니다.

## 2. 코드 난독화는 무엇을 하나요?

**답변**

코드 난독화는 클래스, 메서드, 필드를 짧고 의미 없는 이름(a, b, c)으로 변경하여 리버스 엔지니어링을 크게 어렵게 만듭니다. 또한 APK 크기를 줄이는 데 도움이 됩니다. proguard-rules.pro 파일을 통해 설정합니다.

## 3. Android Keystore System이란 무엇인가요?

**답변**

Android Keystore System은 디바이스에 따라 하드웨어(TEE 또는 Secure Element) 또는 소프트웨어 컨테이너에 암호화 키를 안전하게 저장합니다. 생성된 키는 추출할 수 없어 보안이 강화됩니다. KeyStore.getInstance("AndroidKeyStore")와 KeyGenerator 또는 KeyPairGenerator를 사용합니다.

## 15개 추가 질문 이용 가능

- 생체 인증을 어떻게 구현하나요?
- Certificate Pinning이란 무엇인가요?

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## 기타 Android 면접 주제

- [Android 기초](https://sharpskill.dev/ko/technologies/android/interview-questions/android-fundamentals.md): 24개 질문, Junior
- [Android UI 및 리소스](https://sharpskill.dev/ko/technologies/android/interview-questions/android-ui-and-resources.md): 30개 질문, Junior
- [Android 생명주기](https://sharpskill.dev/ko/technologies/android/interview-questions/android-lifecycle.md): 30개 질문, Junior
- [Android 내비게이션](https://sharpskill.dev/ko/technologies/android/interview-questions/android-navigation.md): 26개 질문, Junior
- [Android 데이터 관리](https://sharpskill.dev/ko/technologies/android/interview-questions/android-data-management.md): 29개 질문, Junior
- [Android 네트워킹](https://sharpskill.dev/ko/technologies/android/interview-questions/android-networking.md): 29개 질문, Junior
- [Android 테스트](https://sharpskill.dev/ko/technologies/android/interview-questions/android-testing.md): 28개 질문, Junior
- [Android Gradle](https://sharpskill.dev/ko/technologies/android/interview-questions/android-gradle.md): 26개 질문, Junior
- [Android를 위한 Kotlin 언어 기초](https://sharpskill.dev/ko/technologies/android/interview-questions/android-kotlin-language-essentials.md): 24개 질문, Junior
- [Room Database](https://sharpskill.dev/ko/technologies/android/interview-questions/android-room-database.md): 25개 질문, Mid-Level
- [백그라운드 작업](https://sharpskill.dev/ko/technologies/android/interview-questions/android-background-work.md): 18개 질문, Mid-Level
- [Jetpack Compose](https://sharpskill.dev/ko/technologies/android/interview-questions/android-compose.md): 28개 질문, Mid-Level
- [권한 및 기기 기능](https://sharpskill.dev/ko/technologies/android/interview-questions/android-permissions-and-device.md): 21개 질문, Mid-Level
- [Android용 Firebase](https://sharpskill.dev/ko/technologies/android/interview-questions/android-firebase.md): 23개 질문, Mid-Level
- [Android MVVM Architecture](https://sharpskill.dev/ko/technologies/android/interview-questions/android-mvvm-architecture.md): 18개 질문, Mid-Level
- [Android 네트워킹 고급](https://sharpskill.dev/ko/technologies/android/interview-questions/android-networking-advanced.md): 13개 질문, Mid-Level
- [Kotlin 컬렉션과 연산자](https://sharpskill.dev/ko/technologies/android/interview-questions/android-kotlin-collections-operators.md): 20개 질문, Mid-Level
- [Kotlin Coroutines와 Flow](https://sharpskill.dev/ko/technologies/android/interview-questions/android-kotlin-coroutines-flow.md): 20개 질문, Mid-Level
- [Android 의존성 주입](https://sharpskill.dev/ko/technologies/android/interview-questions/android-dependency-injection.md): 15개 질문, Mid-Level
- [Android MVI Architecture](https://sharpskill.dev/ko/technologies/android/interview-questions/android-mvi-architecture.md): 17개 질문, Mid-Level
- [Android Clean Architecture](https://sharpskill.dev/ko/technologies/android/interview-questions/android-clean-architecture.md): 21개 질문, Senior
- [Android Compose 고급](https://sharpskill.dev/ko/technologies/android/interview-questions/android-compose-advanced.md): 17개 질문, Senior
- [Android Performance and Monitoring](https://sharpskill.dev/ko/technologies/android/interview-questions/android-performance-monitoring.md): 13개 질문, Senior
- [Android CI/CD and Release](https://sharpskill.dev/ko/technologies/android/interview-questions/android-cicd-release.md): 15개 질문, Senior
- [Android UX and Form Factors](https://sharpskill.dev/ko/technologies/android/interview-questions/android-ux-form-factors.md): 18개 질문, Senior
- [Android Testing Advanced](https://sharpskill.dev/ko/technologies/android/interview-questions/android-testing-advanced.md): 18개 질문, Senior

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