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.
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.
Introduced `Pkcs11Options` for configuring PKCS#11 signing workflows, including properties for library path, token selection, and signing metadata. Added `PdfSignOptionsDto` to represent signing options and `PdfSignatureCheckResultDto` with related DTOs for signature validation.
Defined `PdfSignatureCertificationLevel` enum for certification levels. Added `IPdfDigitalSignatureService` interface to support signing and validating PDF signatures. These changes enable robust and extensible handling of digital signatures.
