Refactored `IPdfDigitalSignatureService` to replace `byte[]` with `Stream` for input and output, improving memory efficiency and scalability. Updated `PdfDigitalSignatureService` implementation to support stream-based operations, including signing, checking, and extracting PDFs.
Modified `SignPdfAsync` to handle multiple signatures sequentially using streams and ensured proper disposal of intermediate streams. Updated `CheckPdfSignatureAsync` and `ExtractOriginalPdfAsync` to use streams, reducing memory overhead.
Refactored `PdfSignatureController` to use streams for file handling, enabling efficient processing of large files. Introduced helper methods for stream handling and enhanced cancellation support. Improved code maintainability by consolidating common logic and reducing duplication.
Replaced the `ContactInfo` property with separate `Email` and `Phone` fields in `PdfSignOptionsDto` and `PdfSignatureCheckItemDto` for better granularity. Updated the `PdfDigitalSignatureService` to handle the new fields, introducing `BuildContactInfo` and `ParseContactInfo` methods for constructing and parsing contact information.
Modified the `PdfSignatureController` to reflect these changes, updating request models and the `SignPdfAsync` method. Updated the `README.md` to document the new structure. These changes improve the clarity and structure of contact information handling.
The `SigningTime` property has been removed from the `PdfSignOptionsDto` class and related client-side input handling. It is now set automatically on the server side based on the `UseUtcSigningTime` configuration (`UtcNow` or local time).
Updated the `PdfDigitalSignatureService` to always set `SigningTime` server-side, ensuring consistent and deterministic behavior. Removed `SigningTime` from the `PdfSignatureController` and adjusted the logic to exclude it from the `signOptions` object.
Updated the `README.md` to reflect these changes, clarifying that `SigningTime` is now server-side only. These changes improve security and simplify client integration.
Updated the `Pkcs11Options` class to rename the `DefaultApplicationName` property to `ApplicationName`, clarifying its role as a globally controlled value embedded in PDF signature metadata.
Modified `PdfDigitalSignatureService` to source `ApplicationName` directly from `Pkcs11Options`, removing client-level overrides. Updated `PdfSignatureController` to reflect this change by removing the `ApplicationName` property from `SignOptions`.
Updated `appsettings.json` and `README.md` to reflect the property name change. These changes enforce stricter configuration control, improving metadata consistency and security.
Enhanced PDF signing with UUID and metadata handling:
- Added `UUID` and `OriginalDocumentSha256` to `PdfSignOptionsDto` and `PdfSignatureCheckItemDto`.
- Introduced `BusinessReason` to separate metadata from signature reasons.
- Updated `PdfDigitalSignatureService` to embed and parse metadata in signature reasons.
- Improved error handling to include metadata in validation results.
- Updated `PdfSignatureController` to handle `UUID` in signing requests.
Refactored PKCS#11 configuration:
- Replaced `LibraryPath` with `AssetsRootPath` for asset resolution.
- Added `ProxySocket` and `DefaultApplicationName` options.
- Clarified runtime behavior for asset resolution in `README.md`.
Updated documentation and examples to reflect these changes.
Updated `.gitignore` to exclude new files and directories, including `FodyWeavers.xsd` and `appsettings.Secrets.json`.
Refactored `PdfDigitalSignatureService`:
- Improved signing time handling by calculating fallback inline.
- Simplified `SignPdfAsync` by inlining signature building.
- Added `ParseByteRanges` to extract `/ByteRange` values from PDFs.
- Introduced `CoversWholeDocument` to validate document coverage.
Enhanced signature validation:
- Integrated `ParseByteRanges` and `CoversWholeDocument`.
- Streamlined `PdfSignatureCheckItemDto` construction.
- Updated properties to calculate values inline.
- Improved `Unchanged` property to check cryptographic validity and document coverage.
These changes enhance maintainability, readability, and functionality.
Introduced a cryptographic infrastructure for PDF signing and validation using PKCS#11-based hardware security modules (HSMs) or software tokens. Key changes include:
- Added `PdfDigitalSignatureService` for signing PDFs, multi-signature support, and signature validation.
- Implemented `Pkcs11ExternalSigner` and `Pkcs11PdfSigningRsa` for PKCS#11-based signing with DevExpress PDF infrastructure.
- Added utilities like `Pkcs11SessionRunner`, `Pkcs11InteropBootstrap`, and `Pkcs11ToolBridge` for session management, library initialization, and fallback mechanisms.
- Introduced `Pkcs11Options` for managing PKCS#11 configurations.
- Updated project dependencies to include `DevExpress.Document.Processor`, `System.Security.Cryptography.Pkcs`, and `Pkcs11Interop`.
- Enhanced error handling and fallback support for PKCS#11 operations.
These changes enable robust and extensible PDF signing capabilities with detailed signature metadata extraction and validation.
