10/3/2023 0 Comments Sign a document in excelSo in today’s article, we will introduce the Excel tips of adding digital signature into Excel. ValidateSignature("Template_signed.In Excel, you can use an extra feature to prove your work. ValidationOptions.ValidationFlags = (Not ValidationFlags.ValidateSignatureCertificate) And Not ValidationFlags.ValidateTimestampCertificateĭim signatureValidation As PackageSignatureValidation = validator.Validate(path, validationOptions)ĪnalyzeValidationResult(signatureValidation)Įxample: Validate Signatures in an XLSX Document Private Shared Sub ValidateSignature(ByVal path As String)ĭim validationOptions As New SignatureValidationOptions() PackageSignatureValidation signatureValidation = validator.Validate(path, validationOptions) ĪnalyzeValidationResult(signatureValidation) ValidationOptions.ValidationFlags = ~ValidationFlags.ValidateSignatureCertificate & ~ValidationFlags.ValidateTimestampCertificate SignatureValidationOptions validationOptions = new SignatureValidationOptions() Private static void ValidateSignature(string path)ĭocumentSigner validator = new DocumentSigner() ValidateSignature("Template_signed.docx") View Example: How to add and validate a digital signature in a Word document Example: Validate Signatures in a DOCX Document Use the SignatureValidationOptions.ValidationFlags property to exclude validation steps. The SignatureValidationOptions object allows you to specify signature validation options (signature or timestamp certificate policy, decryption password, etc.). Utilize the DocumentSigner.Validate method to validate a signature in the specified file or stream. Run Demo: Spreadsheet Document Signature Validate Signatures SignDocument("Template.xlsx", workbookOutput) SignDocument("Template.xlsx", workbookOutput) ĭim workbookOutput As String = "Workbook_signed.xlsx" String workbookOutput = "Workbook_signed.xlsx" View Example: How to Sign a Workbook and Validate the Signature Run Demo: Word (RTF) Document Signature Example: Sign an XLSX Document SignatureInfo.Comments = "Demo Digital Signature" SignatureInfo.CommitmentType = CommitmentType.ProofOfApproval Shared Function CreateSignatureInfo() As SignatureInfo Options.TimestampCertificatePolicy = policy Policy.VerificationFlags = policy.VerificationFlags Or X509VerificationFlags.AllowUnknownCertificateAuthority Or X509VerificationFlags.IgnoreCertificateAuthorityRevocationUnknown Policy.RevocationFlag = X509RevocationFlag.ExcludeRoot Policy.RevocationMode = X509RevocationMode.NoCheck Options.CertificateKeyUsageFlags = X509KeyUsageFlags.None Options.SignatureFlags = options.SignatureFlags And Not SignatureFlags.ValidateCertificate 'In this example, certificate validation is skipped Options.DigestMethod = HashAlgorithmType.SHA256 Shared Function CreateSignatureOptions() As SignatureOptionsĭim certificate As New X509Certificate2("Certificate/SignDemo.pfx", "dxdemo") 'Specify a signature certificate and digest method: Shared Sub SignDocument(ByVal path As String, ByVal output As String)ĭim documentSigner As New DocumentSigner()ĭim signatureOptions As SignatureOptions = CreateSignatureOptions()ĭim signatureInfo As SignatureInfo = CreateSignatureInfo()ĭocumentSigner.Sign(path, output,signatureOptions, signatureInfo) SignDocument("Template.docx", documentOutput) Imports 509Certificatesĭim documentOutput As String = "Document_signed.docx" SignatureInfo signatureInfo = new SignatureInfo() Static SignatureInfo CreateSignatureInfo() X509VerificationFlags.IgnoreCertificateAuthorityRevocationUnknown Policy.VerificationFlags |= X509VerificationFlags.AllowUnknownCertificateAuthority | X509ChainPolicy policy = new X509ChainPolicy() Options.SignatureFlags &= ~SignatureFlags.ValidateCertificate In this example, certificate validation is skipped SignatureOptions options = new SignatureOptions() New X509Certificate2("Certificate/SignDemo.pfx", "dxdemo") Static SignatureOptions CreateSignatureOptions() Specify a signature certificate and digest method: SignatureInfo signatureInfo = CreateSignatureInfo() ĭocumentSigner.Sign(path, output, signatureOptions, signatureInfo) SignatureOptions signatureOptions = CreateSignatureOptions() Static void SignDocument(string path, string output)ĭocumentSigner documentSigner = new DocumentSigner() String documentOutput = "Document_signed.docx"
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |