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 : bool
Public ReadOnly Property IsSigned As Boolean
Valeur 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.