ZIP Compressed Archive (.zip)

PKWARE 표준

ZIP is an archive file format that supports lossless data compression, allowing multiple files and directories to be packaged into a single transportable container.

발명자: Phil Katz (PKWARE)연도: 1989MIME: application/zip

ZIP을(를) TAR(으)로 변환

무료 브라우저 내 ZIP-TAR 변환기. 기기에서 파일을 즉시 변환하세요.

ZIP에서 TAR로 변환기 →

ZIP 온라인 압축

브라우저 내 100% 안전한 압축 — 파일이 기기 외부로 전송되지 않습니다

ZIP 압축 →

검사 및 메타데이터

운영 체제와 파일 분석기는 파일 선두의 바이너리 바이트 시퀀스를 검사하여 ZIP 파일을 식별합니다:

바이트 단위 헤더 시그니처 (매직 바이트)

운영 체제와 파일 분석기는 파일 선두의 바이너리 바이트 시퀀스를 검사하여 ZIP 파일을 식별합니다:

16진수 시그니처 (오프셋 0):

50 4B 03 04

ASCII 표현: PK..

표준화: PKWARE APPNOTE / ISO/IEC 21320-1

기술 사양

컨테이너 아키텍처	Archive container combining multiple files with individual compression headers
압축	Deflate (Method 8), Store (Method 0), BZIP2, LZMA, Zstandard
바이트 엔디안	Little-Endian for all signature headers, CRC32 checks, and sizes
색 공간	Not applicable (binary container for arbitrary files)
채널 및 구조	Hierarchical directory structures, metadata streams, and file checksums
최대 크기	Standard ZIP: 4 GB / 65,535 files; ZIP64: 16 Exabytes / 18 quintillion files
투명도	Not applicable
스트리밍 및 프로그레시브	Central directory at end of file enables instant listing without decompressing

기술 비교 매트릭스: ZIP 대 경쟁사

기술적 속성	ZIP (현재)	7-Zip (7z)	TAR.GZ	RAR
Universal OS Compatibility	100% native in Windows, macOS, Linux, iOS, Android	Requires 7-Zip or third-party app	Native in Linux/macOS; requires tool in Windows	Requires WinRAR or unrar library
Compression Efficiency	Moderate (Deflate algorithm)	Very high (LZMA/LZMA2 algorithm)	Moderate (Deflate over tar)	High (RAR proprietary compression)
Solid Archiving	No (each file compressed independently)	Yes (solid blocks boost compression for duplicate text)	Yes (compresses entire tarball)	Yes (optional solid mode)
Selective Extraction	Fast instant extraction of any single file	Requires decompressing preceding solid blocks	Must decompress stream up to target file	Fast if non-solid

일반적인 손상 모드 및 헥스 복구 가이드

⚠️ Archive utility reports 'End-of-central-directory signature not found' or invalid archive.

근본 원인: Truncated download missing the final bytes containing the Central Directory record.

복구: Use 'zip -FF damaged.zip --out fixed.zip' to scan local file headers from the beginning and reconstruct a new central directory.

보안 분석 및 파서 공격 벡터

ZIP security centers on Zip Slip path traversal vulnerabilities and decompression bombs.

알려진 공격 벡터

Zip Slip: Malicious filenames containing '../../' path traversal escaping the target extraction directory.
Zip Bomb: Tiny archives that expand into petabytes of zeros (e.g. 42.zip 42 KB expanding to 4.5 PB), crashing servers through disk and memory exhaustion.
Legacy ZipCrypto encryption vulnerabilities allowing ciphertext-only key recovery in minutes.

방어적 모범 사례: Always sanitize extraction file paths to ensure they stay within the target folder. Set strict max byte and file count limits when unzipping untrusted uploads. Use WinZip AES-256 encryption.

역사적 배경 및 주요 이력

2015ISO/IEC 21320-1 formalizes ZIP as the baseline container for EPUB, DOCX, and JAR files.

1998Microsoft Windows integrates native ZIP folder extraction in Windows 98 Plus!.

1989Created by Phil Katz for PKZIP following a legal battle with SEA over ARC.

주요 장점

Universally supported by every operating system on earth without installing third-party software.
Central directory located at the end of the archive allows instant file listing without decompressing.
Individual files can be extracted selectively without decompressing the entire archive.

기술적 제한 사항 및 단점

Does not store UNIX file permissions or symlinks reliably across platforms.
Non-solid archiving means compression ratio is lower than 7z or tar.xz for large collections of similar files.
Standard legacy ZipCrypto encryption is cryptographically broken (AES-256 is required).

흥미로운 기술적 상식

The 'PK' in the ZIP file header stands for Phil Katz, the inventor of PKZIP.
Almost all modern app formats (Android .apk, Java .jar, Office .docx, e-books .epub) are actually ZIP archives.

자주 묻는 기술 질문

What is the difference between ZIP and 7Z?

ZIP is universally compatible with every operating system without installing extra software. 7Z uses the modern LZMA/LZMA2 algorithm with solid compression, achieving 30%–50% higher compression ratios but requiring third-party software to open on older systems.

Why is it fast to view the contents of a ZIP file?

ZIP stores a 'Central Directory' at the very end of the file. Software simply reads the last few kilobytes to immediately display the full directory tree and file names without decompressing any files.