Leadtools.Dicom Namespace > DicomDataSet Class : VerifySignature Method |
public bool VerifySignature( DicomElement signatureItem )
'Declaration Public Function VerifySignature( _ ByVal signatureItem As DicomElement _ ) As Boolean
'Usage Dim instance As DicomDataSet Dim signatureItem As DicomElement Dim value As Boolean value = instance.VerifySignature(signatureItem)
public bool VerifySignature( DicomElement signatureItem )
ObjectiveC Syntax
function Leadtools.Dicom.DicomDataSet.VerifySignature( signatureItem )
public: bool VerifySignature( DicomElement^ signatureItem )
Public Sub ExamineSignature(ByVal dataset As DicomDataSet, ByVal signatureItem As DicomElement) ' Verify the Digital Signature; if pSignatureItem is NULL, the function ' will verify all the Digital Signatures that exist in the Data Set Dim ret As Boolean = dataset.VerifySignature(signatureItem) If ret = True Then If Not signatureItem Is Nothing Then MessageBox.Show("The Digital Signature was verified.", "Sample") Else MessageBox.Show("All Digital Signatures were verified (if there are any).", "Sample") End If Else If Not signatureItem Is Nothing Then MessageBox.Show("The Digital Signature is invalid.", "Sample") Else MessageBox.Show("At least one Digital Signature is invalid.", "Sample") End If End If ' The Digital Signature UID Dim msg As StringBuilder = New StringBuilder() msg.Append(dataset.GetSignatureUID(signatureItem)) ' The Digital Signature DateTime Dim digitalSignatureDateTime As DicomDateTimeValue = dataset.GetSignatureDateTime(signatureItem) If digitalSignatureDateTime.IsEmpty = False Then If (digitalSignatureDateTime.Offset >= 0) Then msg.AppendFormat(" Digital Signature DateTime:{0}/{1}/{3} {4}:{5}:{6}.{7} {8}{9}{10}", digitalSignatureDateTime.Month, digitalSignatureDateTime.Day, digitalSignatureDateTime.Year, digitalSignatureDateTime.Hours, digitalSignatureDateTime.Minutes, digitalSignatureDateTime.Seconds, digitalSignatureDateTime.Fractions, "+"c, digitalSignatureDateTime.Offset, Environment.NewLine) Else msg.AppendFormat(" Digital Signature DateTime:{0}/{1}/{3} {4}:{5}:{6}.{7} {8}{9}{10}", digitalSignatureDateTime.Month, digitalSignatureDateTime.Day, digitalSignatureDateTime.Year, digitalSignatureDateTime.Hours, digitalSignatureDateTime.Minutes, digitalSignatureDateTime.Seconds, digitalSignatureDateTime.Fractions, "-"c, digitalSignatureDateTime.Offset, Environment.NewLine) End If End If Dim macTransferSyntax As String = dataset.GetMacTransferSyntax(signatureItem) If Not macTransferSyntax Is Nothing Then msg.AppendFormat("MAC Calculation Transfer Syntax UID: {0}", macTransferSyntax) End If Dim macAlgorithm As String = dataset.GetMacAlgorithm(signatureItem) If Not macAlgorithm Is Nothing Then msg.AppendFormat("MAC Algorithm: {0}", macAlgorithm) End If ' The Data Elements Signed If dataset.GetSignedElementsCount(signatureItem) > 0 Then ' We will display only one Dim element As DicomElement = dataset.GetSignedElement(signatureItem, 0) msg.AppendFormat(" Data Elements Signed:{0}{1}{1}", element.Tag, Environment.NewLine) End If msg.AppendFormat("{0}Do you want to save the Certificate of Signer?", Environment.NewLine) If MessageBox.Show(msg.ToString(), "Sample", MessageBoxButtons.YesNo) = DialogResult.Yes Then dataset.SaveCertificate(signatureItem, Path.Combine(LEAD_VARS.ImagesDir, "CertOfSigner.cer"), DicomCertificateFormat.Pem) End If End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class
public void ExamineSignature(DicomDataSet dataset, DicomElement signatureItem) { // Verify the Digital Signature; if pSignatureItem is NULL, the function // will verify all the Digital Signatures that exist in the Data Set bool ret = dataset.VerifySignature(signatureItem); if (ret == true) { if (signatureItem != null) { MessageBox.Show("The Digital Signature was verified.", "Sample"); } else { MessageBox.Show("All Digital Signatures were verified (if there are any).", "Sample"); } } else { if (signatureItem != null) { MessageBox.Show("The Digital Signature is invalid.", "Sample"); } else { MessageBox.Show("At least one Digital Signature is invalid.", "Sample"); } } // The Digital Signature UID StringBuilder msg = new StringBuilder(); msg.Append(dataset.GetSignatureUID(signatureItem)); // The Digital Signature DateTime DicomDateTimeValue digitalSignatureDateTime = dataset.GetSignatureDateTime(signatureItem); if (digitalSignatureDateTime.IsEmpty == false) { msg.AppendFormat(" Digital Signature DateTime:{0}/{1}/{3} {4}:{5}:{6}.{7} {8}{9}{10}", digitalSignatureDateTime.Month, digitalSignatureDateTime.Day, digitalSignatureDateTime.Year, digitalSignatureDateTime.Hours, digitalSignatureDateTime.Minutes, digitalSignatureDateTime.Seconds, digitalSignatureDateTime.Fractions, (digitalSignatureDateTime.Offset >= 0) ? '+' : '-', digitalSignatureDateTime.Offset, Environment.NewLine); } string macTransferSyntax = dataset.GetMacTransferSyntax(signatureItem); if (macTransferSyntax != null) { msg.AppendFormat("MAC Calculation Transfer Syntax UID: {0}", macTransferSyntax); } string macAlgorithm = dataset.GetMacAlgorithm(signatureItem); if (macAlgorithm != null) { msg.AppendFormat("MAC Algorithm: {0}", macAlgorithm); } // The Data Elements Signed if (dataset.GetSignedElementsCount(signatureItem) > 0) { // We will display only one DicomElement element = dataset.GetSignedElement(signatureItem, 0); msg.AppendFormat(" Data Elements Signed:{0}{1}{1}", element.Tag, Environment.NewLine); } msg.AppendFormat("{0}Do you want to save the Certificate of Signer?", Environment.NewLine); if (MessageBox.Show(msg.ToString(), "Sample", MessageBoxButtons.YesNo) == DialogResult.Yes) { dataset.SaveCertificate(signatureItem, Path.Combine(LEAD_VARS.ImagesDir, "CertOfSigner.cer"), DicomCertificateFormat.Pem); } } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; }
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2