PackageDigitalSignatureManager.IsSigned Propriété
Définition
Important
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Obtient une valeur indiquant si le package contient des signatures.
public:
property bool IsSigned { bool get(); };public bool IsSigned { get; }member this.IsSigned : boolPublic ReadOnly Property IsSigned As BooleanValeur de propriété
true si le package contient des signatures ; sinon, false.
Exemples
L’exemple suivant montre comment utiliser la IsSigned propriété pour déterminer si un package contient des signatures numériques.
// ------------------------ ValidateSignatures ------------------------
/// <summary>
/// Validates all the digital signatures of a given package.</summary>
/// <param name="package">
/// The package for validating digital signatures.</param>
/// <returns>
/// true if all digital signatures are valid; otherwise false if the
/// package is unsigned or any of the signatures are invalid.</returns>
private static bool ValidateSignatures(Package package)
{
if (package == null)
throw new ArgumentNullException("ValidateSignatures(package)");
// Create a PackageDigitalSignatureManager for the given Package.
PackageDigitalSignatureManager dsm =
new PackageDigitalSignatureManager(package);
// Check to see if the package contains any signatures.
if (!dsm.IsSigned)
return false; // The package is not signed.
// Verify that all signatures are valid.
VerifyResult result = dsm.VerifySignatures(false);
if (result != VerifyResult.Success)
return false; // One or more digital signatures are invalid.
// else if (result == VerifyResult.Success)
return true; // All signatures are valid.
}// end:ValidateSignatures()
' ------------------------ ValidateSignatures ------------------------
''' <summary>
''' Validates all the digital signatures of a given package.</summary>
''' <param name="package">
''' The package for validating digital signatures.</param>
''' <returns>
''' true if all digital signatures are valid; otherwise false if the
''' package is unsigned or any of the signatures are invalid.</returns>
Private Shared Function ValidateSignatures(ByVal package As Package) As Boolean
If package Is Nothing Then
Throw New ArgumentNullException("ValidateSignatures(package)")
End If
' Create a PackageDigitalSignatureManager for the given Package.
Dim dsm As New PackageDigitalSignatureManager(package)
' Check to see if the package contains any signatures.
If Not dsm.IsSigned Then
Return False
End If
' The package is not signed.
' Verify that all signatures are valid.
Dim result As VerifyResult = dsm.VerifySignatures(False)
If result <> VerifyResult.Success Then
Return False
End If
' One or more digital signatures are invalid.
' else if (result == VerifyResult.Success)
' All signatures are valid.
Return True
End Function
' end:ValidateSignatures()
Remarques
La IsSigned propriété n’effectue pas de validations de signature. Si des signatures sont présentes et IsSigned que la valeur est true, une ou plusieurs signatures peuvent ne pas être valides. Appelez VerifySignatures pour confirmer que les signatures sont valides et n’ont pas changé.
