Release Highlights

The DLLs-only release of Aspose.ZIP for .NET 25.3 adds LZ4 support, smarter format detection via IArchive.Format, secure temp file generation, and more accurate metadata and extraction behavior across formats.

✳️ New Feature

• LZ4 Support Introduced:
  • New Lz4Archive class supports .lz4 archive extraction.
  • API surface includes:
    • Extract()
    • ExtractToDirectory()
    • Open(): Stream output from decompression.

🔧 Enhancement

• Identify Archive Format:

  • IArchive.Format exposes the detected archive type (ZIP, TAR, 7z, etc.) to enable format-agnostic processing.

• Accurate Time Metadata:

  • Now applies to:
    • Encrypted 7z archive entries
    • GZIP archives opened through format detection
    • Other common archive types

• Secure Temporary Files:

  • Archive operations now generate temp files securely to minimize exposure to path traversal or unsafe file naming.

🛠 Fix

• Password Handling Bug in 7z:

  • Eliminated endless extraction loop when opening a 7z archive with the wrong password.

• Improved File Entry Filtering:

  • Directory entries are excluded from FileEntries, improving iteration logic for file-only operations.

👉 You can view the full list of updates by visiting Aspose.ZIP for .NET 25.3 Release Notes

lz4 extract dotnet | aspose zip iarchive format | archive metadata fix | secure tempfile archive