Release Highlights

Aspose.ZIP for .NET 25.2 DLLs improve password handling, extraction validation, and metadata consistency across archive formats, while optimizing core performance and memory usage.

✳️ New Feature

• Preserve Modification Timestamps:

  • Added ModificationTime property to multiple archive entry types including CabEntry, IsoEntry, TarEntry, LhaArchiveEntry, XarEntry, and WimEntry.
  • Automatically applied on extraction for accurate file history retention.

• Skip Checksum Verification:

  • Use ArchiveLoadOptions.SkipChecksumVerification to bypass ZIP checksum validation when speed is prioritized over strict validation.

🔧 Enhancement

• Streamlined Encrypted Extraction:

  • Extract encrypted 7z archives with just one password entry.
  • Use ArchiveFactory.GetArchive(Stream, string password) to extract encrypted archives without needing to know the format ahead of time.

• Compression Accuracy & Efficiency:

  • Enhanced structure validation for Bzip2, Gzip, and Zstandard extraction.
  • Reduced memory usage through improved header parsing logic.
  • Optimized checksum processing for faster decompression routines.

• Namespace Cleanup:

  • ARJ archive classes now reside under Aspose.Zip.Arj for consistency (old Aspose.Zip.ARJ types removed).

🛠 Fix

• No direct bug fixes recorded in this version.

👉 You can view the full list of updates by visiting Aspose.ZIP for .NET 25.2 Release Notes

dll archive modificationtime | encrypted archive detection | gzip zstandard validation | skip zip checksum