## Document::get_DigitalSignatures method


Gets the collection of digital signatures for this document and their validation results.

```cpp
System::SharedPtr<Aspose::Words::DigitalSignatures::DigitalSignatureCollection> Aspose::Words::Document::get_DigitalSignatures() const
```

## Remarks


This collection contains digital signatures that were loaded from the original document. These digital signatures will not be saved when you save this [Document](../) object into a file or stream because saving or converting will produce a document that is different from the original and the original digital signatures will no longer be valid.

This collection is never **null**. If the document is not signed, it will contain zero elements.

## Examples



Shows how to validate and display information about each signature in a document. 
```cpp
auto doc = System::MakeObject<Aspose::Words::Document>(System::String(get_MyDir() + u"Digitally signed.docx"));

for (auto&& signature : doc->get_DigitalSignatures())
{
    std::cout << System::String::Format(u"{0} signature: ", signature->get_IsValid() ? System::String(u"Valid") : System::String(u"Invalid")) << std::endl;
    std::cout << System::String::Format(u"\tReason:\t{0}", signature->get_Comments()) << std::endl;
    std::cout << System::String::Format(u"\tType:\t{0}", signature->get_SignatureType()) << std::endl;
    std::cout << System::String::Format(u"\tSign time:\t{0}", signature->get_SignTime()) << std::endl;
    std::cout << System::String::Format(u"\tSubject name:\t{0}", signature->get_CertificateHolder()->get_Certificate()->get_SubjectName()) << std::endl;
    std::cout << System::String::Format(u"\tIssuer name:\t{0}", signature->get_CertificateHolder()->get_Certificate()->get_IssuerName()->get_Name()) << std::endl;
    std::cout << std::endl;
}
```


Shows how to sign documents with X.509 certificates. 
```cpp
// Verify that a document is not signed.
ASSERT_FALSE(FileFormatUtil::DetectFileFormat(get_MyDir() + u"Document.docx")->get_HasDigitalSignature());

// Create a CertificateHolder object from a PKCS12 file, which we will use to sign the document.
System::SharedPtr<Aspose::Words::DigitalSignatures::CertificateHolder> certificateHolder = CertificateHolder::Create(get_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 = System::MakeObject<Aspose::Words::DigitalSignatures::SignOptions>();
signOptions->set_SignTime(System::DateTime::get_Now());
DigitalSignatureUtil::Sign(get_MyDir() + u"Document.docx", get_ArtifactsDir() + u"Document.DigitalSignature.docx", certificateHolder, signOptions);

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

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

ASSERT_TRUE(FileFormatUtil::DetectFileFormat(get_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 = System::MakeObject<Aspose::Words::Document>(System::String(get_ArtifactsDir() + u"Document.DigitalSignature.docx"));
System::SharedPtr<Aspose::Words::DigitalSignatures::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

* Class [DigitalSignatureCollection](../../../aspose.words.digitalsignatures/digitalsignaturecollection/)
* Class [Document](../)
* Namespace [Aspose::Words](../../)
* Library [Aspose.Words for C++](../../../)