Released: Dec 18, 2025

V25.12 での更新項目

機能

• Introduced comprehensive support for embedding digital signatures directly into raster images using steganography (LSB - Least Significant Bit technique). This method embeds signature data invisibly into image pixels, making the signature undetectable to the naked eye while maintaining image quality. The feature supports signing and verifying PNG and JPG image formats with password protection. Key benefits for developers:
  • Invisible signatures - Signatures are embedded directly into image pixels using steganography, preserving image quality.
  • Password protection - Signatures are protected with a password (minimum 4 characters) for security.
  • Format support - Works with PNG and JPG image formats.
  • Full validation support - Verify embedded signatures using password-based authentication with configurable detection thresholds.
  • Stream support - Can sign and verify images from streams or file paths.
• LINQ queries have been optimized for signature operations.

不具合の修正

• Fixed GeneratePreview() type initializer exception with DOC format on Linux.