The **Aspose.Words.DigitalSignatures** module provides classes to sign documents and verify signatures.





## Classes

| Class | Description |
| --- | --- |
| [CertificateHolder](./certificateholder/) | Represents a holder of **X509Certificate2** instance. To learn more, visit the [Work with Digital Signatures](https://docs.aspose.com/words/nodejs-net/working-with-digital-signatures/) documentation article. |
| [DigitalSignatureCollection](./digitalsignaturecollection/) | Provides a read-only collection of digital signatures attached to a document. To learn more, visit the [Work with Digital Signatures](https://docs.aspose.com/words/nodejs-net/working-with-digital-signatures/) documentation article. |
| [DigitalSignatureTimestampSettings](./digitalsignaturetimestampsettings/) | Contains settings of the digital signature timestamp. |
| [DigitalSignatureUtil](./digitalsignatureutil/) | Provides methods for signing document. To learn more, visit the [Work with Digital Signatures](https://docs.aspose.com/words/nodejs-net/working-with-digital-signatures/) documentation article. |
| [SignOptions](./signoptions/) | Allows to specify options for document signing. To learn more, visit the [Work with Digital Signatures](https://docs.aspose.com/words/nodejs-net/working-with-digital-signatures/) documentation article. |

## Enumerations

| Enumeration | Description |
| --- | --- |
| [DigitalSignatureType](./digitalsignaturetype/) | Specifies the type of a digital signature. |
| [XmlDsigLevel](./xmldsiglevel/) | Specifies the level of a digital signature based on XML-DSig standard. |