## DigitalSignature class

Signature in file.

```javascript
class DigitalSignature;
```


## Constructors

| Name | Description |
| --- | --- |
| [constructor(Uint8Array, string, string, Date)](#constructor-uint8array-string-string-date-)| Constructor of DigitalSignature. |
| [constructor(string, string, string, Date)](#constructor-string-string-string-date-)| Constructor of DigitalSignature. |

## Properties

| Property | Type | Description |
| --- | --- | --- |
| [comments](#comments--)| string | The purpose to signature. |
| [signTime](#signTime--)| Date | The time when the document was signed. |
| [text](#text--)| string | Specifies the text of actual signature in the digital signature. Default value is Empty. |
| [image](#image--)| Uint8Array | Specifies an image for the digital signature. Default value is null. |
| [isValid](#isValid--)| boolean | Readonly. If this digital signature is valid and the document has not been tampered with, this value will be true. |
| [xAdESType](#xAdESType--)| XAdESType | XAdES type. Default value is None(XAdES is off). |


### constructor(Uint8Array, string, string, Date) {#constructor-uint8array-string-string-date-}

Constructor of DigitalSignature.

```javascript
constructor(rawData: Uint8Array, password: string, comments: string, signTime: Date);
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| rawData | number[] | A byte array containing data from an X.509 certificate. |
| password | string | The password required to access the X.509 certificate data. |
| comments | string | The purpose to signature. |
| signTime | Date | The utc time when the document was signed. |

### constructor(string, string, string, Date) {#constructor-string-string-string-date-}

Constructor of DigitalSignature.

```javascript
constructor(fileName: string, password: string, comments: string, signTime: Date);
```

**Parameters:**
| Parameter | Type | Description |
| --- | --- | --- |
| fileName | string | The name of a certificate file. |
| password | string | The password required to access the X.509 certificate data. |
| comments | string | The purpose to signature. |
| signTime | Date | The utc time when the document was signed. |

### comments {#comments--}

The purpose to signature.

```javascript
comments : string;
```


### signTime {#signTime--}

The time when the document was signed.

```javascript
signTime : Date;
```


### text {#text--}

Specifies the text of actual signature in the digital signature. Default value is Empty.

```javascript
text : string;
```


### image {#image--}

Specifies an image for the digital signature. Default value is null.

```javascript
image : Uint8Array;
```


### isValid {#isValid--}

Readonly. If this digital signature is valid and the document has not been tampered with, this value will be true.

```javascript
isValid : boolean;
```


### xAdESType {#xAdESType--}

XAdES type. Default value is None(XAdES is off).

```javascript
xAdESType : XAdESType;
```