Aspose::Words::DigitalSignatures::DigitalSignatureCollection::get_IsValid method

DigitalSignatureCollection::get_IsValid method

Returns true if all digital signatures in this collection are valid and the document has not been tampered with Also returns true if there are no digital signatures. Returns false if at least one digital signature is invalid.

bool Aspose::Words::DigitalSignatures::DigitalSignatureCollection::get_IsValid()

Examples

Shows how to sign documents with X.509 certificates.

// Verify that a document is not signed.
ASSERT_FALSE(FileFormatUtil::DetectFileFormat(MyDir + u"Document.docx")->get_HasDigitalSignature());

// Create a CertificateHolder object from a PKCS12 file, which we will use to sign the document.
SharedPtr<CertificateHolder> certificateHolder = CertificateHolder::Create(MyDir + u"morzal.pfx", u"aw", nullptr);

// There are two ways of saving a signed copy of a document to the local file system:
// 1 - Designate a document by a local system filename and save a signed copy at a location specified by another filename.
auto signOptions = MakeObject<SignOptions>();
signOptions->set_SignTime(System::DateTime::get_Now());

DigitalSignatureUtil::Sign(MyDir + u"Document.docx", ArtifactsDir + u"Document.DigitalSignature.docx", certificateHolder, signOptions);

ASSERT_TRUE(FileFormatUtil::DetectFileFormat(ArtifactsDir + u"Document.DigitalSignature.docx")->get_HasDigitalSignature());

// 2 - Take a document from a stream and save a signed copy to another stream.
{
    auto inDoc = MakeObject<System::IO::FileStream>(MyDir + u"Document.docx", System::IO::FileMode::Open);
    {
        auto outDoc = MakeObject<System::IO::FileStream>(ArtifactsDir + u"Document.DigitalSignature.docx", System::IO::FileMode::Create);
        DigitalSignatureUtil::Sign(inDoc, outDoc, certificateHolder);
    }
}

ASSERT_TRUE(FileFormatUtil::DetectFileFormat(ArtifactsDir + u"Document.DigitalSignature.docx")->get_HasDigitalSignature());

// Please verify that all of the document's digital signatures are valid and check their details.
auto signedDoc = MakeObject<Document>(ArtifactsDir + u"Document.DigitalSignature.docx");
SharedPtr<DigitalSignatureCollection> digitalSignatureCollection = signedDoc->get_DigitalSignatures();

ASSERT_TRUE(digitalSignatureCollection->get_IsValid());
ASSERT_EQ(1, digitalSignatureCollection->get_Count());
ASSERT_EQ(DigitalSignatureType::XmlDsig, digitalSignatureCollection->idx_get(0)->get_SignatureType());
ASSERT_EQ(u"CN=Morzal.Me", signedDoc->get_DigitalSignatures()->idx_get(0)->get_IssuerName());
ASSERT_EQ(u"CN=Morzal.Me", signedDoc->get_DigitalSignatures()->idx_get(0)->get_SubjectName());

See Also

Aspose::Words::DigitalSignatures::DigitalSignatureCollection::get_Count method Aspose::Words::DigitalSignatures::DigitalSignatureCollection::GetEnumerator method