Home/ Questions/Q 6362653
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-24T23:56:13+00:00

I am looking for a standard archiver format (ZIP, 7ZIP, etc.) that is supported

  • 0

I am looking for a “standard” archiver format (ZIP, 7ZIP, etc.) that is supported by a pure Java library and has strong (AES-128) encryption.

I need a format that people can decrypt using off-the-shelf software for Windows and OsX.

My understanding is that ZIP encryption prior to version PKZIP 9.0 (Zip 2.0) was very weak, and that PKWARE has never published the AES-256 file version.

The format need only support secret-key encryption (public-key is not required or desired).

I can’t use BouncyCastle Open-PGP because their JAR files must be signed with their key and we need to also sign with our code-signing key for Java Web Start. Some of our customers are running old builds of Java 6 (< 14) and can’t upgrade. Builds of Java 6 prior to 14 did not support signing with multiple keys.

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    You can try using the Zip4j library:

    Key features:

    • Create, Add, Extract, Update, Remove files from a Zip file
    • Read/Write password protected Zip files
    • Supports AES 128/256 Encryption
    • Supports Standard Zip Encryption
    • Supports Zip64 format
    • Supports Store (No Compression) and Deflate compression method
    • Create or extract files from Split Zip files (Ex: z01, z02,…zip)
    • Supports Unicode file names
    • Progress Monitor

    License:

    • Zip4j is released under Apache License, Version 2.0.
    • 0