30 lines
1.5 KiB
C#
30 lines
1.5 KiB
C#
using DocumentOperator.Application.Common.Dto;
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namespace DocumentOperator.Application.Common.Interfaces.Services;
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/// <summary>
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/// Defines PDF digital-signing operations for the application boundary.
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/// </summary>
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public interface IPdfDigitalSignatureService
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{
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/// <summary>
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/// Creates a digital signature for the provided PDF bytes and returns
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/// a new signed PDF document.
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/// </summary>
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/// <param name="inputPdf">Source PDF content stream.</param>
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/// <param name="outputPdf">Destination stream for signed PDF output.</param>
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/// <param name="options">Optional signing options that map to PDF signature metadata fields.</param>
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/// <param name="image">Optional image stream for signature appearance.</param>
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/// <param name="cancellationToken">Cancellation token for cooperative cancellation.</param>
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Task SignPdfAsync(Stream inputPdf, Stream outputPdf, PdfSignOptionsDto? options = null, Stream? image = null, CancellationToken cancellationToken = default);
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/// <summary>
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/// Checks whether the provided PDF contains signature field(s) and whether
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/// those signatures are cryptographically valid.
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/// </summary>
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/// <param name="inputPdf">PDF content stream to inspect.</param>
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/// <param name="cancellationToken">Cancellation token for cooperative cancellation.</param>
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/// <returns>A structured result containing signature presence and per-signature details.</returns>
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Task<PdfSignatureCheckResultDto> CheckPdfSignatureAsync(Stream inputPdf, CancellationToken cancellationToken = default);
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}
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