PackageDigitalSignatureManager.VerifySignatures(Boolean) Metodo

  • Riferimento

Definizione

Spazio dei nomi:
System.IO.Packaging
Assembly:
WindowsBase.dll

Verifica le firme su tutte le parti firmate all'interno del pacchetto.

public:
 System::IO::Packaging::VerifyResult VerifySignatures(bool exitOnFailure);
public System.IO.Packaging.VerifyResult VerifySignatures (bool exitOnFailure);
member this.VerifySignatures : bool -> System.IO.Packaging.VerifyResult
Public Function VerifySignatures (exitOnFailure As Boolean) As VerifyResult

Parametri

exitOnFailure
Boolean

true per uscire al primo errore. In caso contrario, false per continuare e controllare tutte le firme.

Restituisce

VerifyResult

Success (valore 0) se tutte le firme sono state verificate correttamente. In caso contrario, un'enumerazione che identifica l'errore.

Esempio

Nell'esempio seguente viene illustrato come usare questo metodo per convalidare tutte le parti firmate all'interno di un pacchetto. Per l'esempio completo, vedere Creazione di un pacchetto con un esempio di firma digitale.

// ------------------------ 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()

Commenti

Questo metodo verifica solo le firme digitali; non verifica i certificati X.509 correlati. Il VerifyCertificate metodo può essere usato per verificare i certificati X.509.

Si applica a

Vedi anche