# Chambersign

{% hint style="warning" %}
Sample code uses ES6 language features such as arrow functions and promises. For compatibility with IE11, code written with these features must be either transpiled using tools like Babel or refactored accordingly using callbacks
{% endhint %}

{% hint style="danger" %}
Chambersign is only usable when the Middleware software has been installed. As integrator you can check this with the [File Exchange module](https://t1t.gitbook.io/t1c-js-guide-v3/v3.3.0-1/file/file-exchange#introduction). Example will be described below
{% endhint %}

## Chambersign introduction

The Chambersign token is a token that requires for the middleware of Chambersign to be installed prior to using it on the Trust1Connector.

## Detect if Middleware has been installed.

### Windows

The chambersign software for windows requires administration rights to be installed. After installation the location will be:

x64 & x86 ; `C:\Program Files\ChamberSign`

To check if this has been installed we can use the File-exchange create type function and then check the contents of the (sub)-folders.

To check if the middleware is installed the sample code below is a good start to use the File-Exchange to check if the middleware has been installed and its safe to continue to use the ChamberSign middleware and the Trust1Connector.

{% hint style="info" %}
This is an example of how this could be integrated. You are free to implement this however you like. Information for the file-exchange module can be found [here](https://t1t.gitbook.io/t1c-js-guide-v3/v3.3.0-1/file/file-exchange)
{% endhint %}

```javascript
const entity = "chambersign";
const type = "middleware";
const initPath = "C:\\Program Files\\ChamberSign"

T1CSdk.T1CClient.initialize(config).then(res => {
    client = res;
    core = client.core();
    let fileex = client.fileex();

    const middlewareInstalled = await isMiddlewareInstalled(fileex);
    if (middlewareInstalled) {
        // Middleware is installed you can use the chambersign token with the T1C
    } else {
        // Middleware not installed please install before using it with the T1C
    }
    
}, err => {
    errrorHandler(err);
});


async function isMiddlewareInstalled(fileexClient) {
    fileexClient.existsType(entity, type).then(existsRes => {
        if (existsRes.data) {
            // Type exists
            return checkFilesPresent(fileexClient);
        } else {
            // Type does not exist        
            fileexClient.createType(entity, type, initPath).then(createRes => {
                return checkFilesPresent(fileexClient);
            }, err => {
                errrorHandler(err);
            })
        }
    }, err => {
        // Type exists error, try to create and then check if middleware is installed
        fileexClient.createType(entity, type, initPath).then(createRes => {
            return checkFilesPresent(fileexClient);
        }, err => {
            errrorHandler(err);
        })
    });
}


async function checkFilesPresent(fileexClient) {
    await fileexClient.existsFile(entity, type, "HashLogic\\bin\\idoPKCS.dll").then(existsFileRes => {
        return existsFileRes;
    }, err => {
        return false;
    })
}
```

## Interface

```javascript
export interface AbstractEidGeneric {
//  getModuleDescription(module: string, callback?: (error: T1CLibException, data: DataObjectResponse) => void): Promise<DataObjectResponse>;
//  allData(module: string, filters?: string[] | Options, callback?: (error: T1CLibException, data: TokenAllDataResponse) => void): Promise<TokenAllDataResponse>;
  allCerts(module: string, parseCerts?: boolean,  filters?: string[] | Options, callback?: (error: T1CLibException, data: TokenAllCertsResponse) => void): Promise<TokenAllCertsResponse>;
//  biometric(module: string, callback?: (error: T1CLibException, data: TokenBiometricDataResponse) => void): Promise<TokenBiometricDataResponse>;
//  tokenData(module: string, callback?: (error: T1CLibException, data: TokenDataResponse) => void): Promise<TokenDataResponse>;
//  address(module: string, callback?: (error: T1CLibException, data: TokenAddressResponse) => void): Promise<TokenAddressResponse>;
//  picture(module: string, callback?: (error: T1CLibException, data: TokenPictureResponse) => void): Promise<TokenPictureResponse>;
//  rootCertificate(module: string, parseCerts?: boolean,  callback?: (error: T1CLibException, data: TokenCertificateResponse) => void): Promise<TokenCertificateResponse>;
//  intermediateCertificates(module: string, parseCerts?: boolean,  callback?: (error: T1CLibException, data: TokenCertificateResponse) => void): Promise<TokenCertificateResponse>;
  authenticationCertificate(module: string, parseCerts?: boolean,  callback?: (error: T1CLibException, data: TokenCertificateResponse) => void): Promise<TokenCertificateResponse>;
  nonRepudiationCertificate(module: string, parseCerts?: boolean,  callback?: (error: T1CLibException, data: TokenCertificateResponse) => void): Promise<TokenCertificateResponse>;
//  encryptionCertificate(module: string, parseCerts?: boolean,  callback?: (error: T1CLibException, data: TokenCertificateResponse) => void): Promise<TokenCertificateResponse>;
  verifyPin(module: string, body: TokenVerifyPinData, callback?: (error: T1CLibException, data: TokenVerifyPinResponse) => void): Promise<TokenVerifyPinResponse>;
  authenticate(module: string, body: TokenAuthenticateOrSignData, callback?: (error: T1CLibException, data: TokenAuthenticateResponse) => void): Promise<TokenAuthenticateResponse>;
  sign(module: string, body: TokenAuthenticateOrSignData, bulk?: boolean, callback?: (error: T1CLibException, data: TokenSignResponse) => void): Promise<TokenSignResponse>;
  allAlgoRefs(module: string, callback?: (error: T1CLibException, data: TokenAlgorithmReferencesResponse) => void): Promise<TokenAlgorithmReferencesResponse>
  resetBulkPin(module: string, callback?: (error: T1CLibException, data: BoolDataResponse) => void): Promise<BoolDataResponse>;
}
```

{% hint style="info" %}
Be aware that for chambersign only the following functions are supported at this time:

* authenticate
* sign
* verifyPin
* AuthenticationCertificate
* NonRepudiationCertificate
* AllCerts(auth, nonrep)
* allAlgoRefs
* resetBulkPin
  {% endhint %}

### Models

All model information can be found in the [Token typings model page](https://t1t.gitbook.io/t1c-js-guide-v3/v3.3.0-1/token-typing-models#models)

## Initialise the Trust1Connector JS

Initialise a Trust1Connector client with a valid configuration:

```javascript
T1CSdk.T1CClient.initialize(config).then(res => {
    client = res;
}, err => {
    console.error(error)
});
```

### Obtain the Reader information

In order to get all connected card-readers, with available cards:

```javascript
var core = client.core();
core.readersCardAvailable(callback);
```

This function call returns:

```javascript
{
  "data": [
    // List of reader with cards found
  ],
  "success": true
}
```

Using the generic interface can be done as follows;

```javascript
const module = "chambersign";
var generic = client.generic(selected_reader.id);
```

Because we're using the generic interface we can define the module variable upfront since we know we want to use the chambersign integration.

## Certificates

Exposes all the certificates publicly available on the smart card.

### Authentication Certificate

Contains the 'authentication certificate' stored on the smart card. The 'authentication certificate' contains the public key corresponding to the private RSA authentication key. The 'authentication certificate' is needed for pin validation and authentication. When additional parsing of the certificate is needed you can add a boolean to indicate if you want to parse the certificate or not\
The service can be called:

```javascript
generic.authenticationCertificate(module, parseCertsBoolean, callback);
```

Response:

```javascript
{
    success: true,
    data: {
        certificate?: string,
        certificates?: Array<string>,
        certificateType?: string,
        id?: string,
        parsedCertificate?: Certificate,
        parsedCertificates?: Array<Certificate>
    }    
}
```

### Non-repudiation Certificate

Contains the 'non-repudiation certificate' stored on the smart card. The 'non-repudiation certificate' contains the public key corresponding the private RSA non-repudiation key. When additional parsing of the certificate is needed you can add a boolean to indicate if you want to parse the certificate or not\
The service can be called:

```javascript
generic.nonRepudiationCertificate(module, parseCertsBoolean, callback);
```

Response:

```javascript
{
    success: true,
    data: {
        certificate?: string,
        certificates?: Array<string>,
        certificateType?: string,
        id?: string,
        parsedCertificate?: Certificate,
        parsedCertificates?: Array<Certificate>
    }    
}
```

### Filter Certificates

All certificates on the smart card can be dumped at once, or using a filter. In order to read all certificates at once:

```javascript
var filter = [];
generic.allCerts(module, parseCerts, { filters: filter}, callback);
```

Response:

```javascript
{
 "authenticationCertificate": {
  ...
 },
 "nonRepudiationCertificate": {
  ...
 }
}
```

The filter can be used to ask a list of custom data containers. For example, we want to read only the rootCertificate

```javascript
var filter = ['authenticationCertificate'];
generic.allCerts(module, { filters: filter}, callback);
```

Response:

```javascript
{
 "authenticationCertificate": {
  ...
 }
}
```

## Sign Data

To get the certificates necessary for signature validation in your back-end:

```javascript
var filter = null;
generic.allCerts(module, { filters: filter}, callback);
```

Response:

```javascript
{
 "authenticationCertificate": {
  ...
 },
 "nonRepudiationCertificate": {
  ...
 }
}
```

Depending on the connected smart card reader. A sign can be executed in 2 modes:

* Using a connected card reader with 'pin-pad' capabilities (keypad and display available)
* Using a connected card reader without 'pin-pad' capabilities (no keypad nor display available)

Security consideration: In order to sign a hash, security considerations **prefer** using a 'pin-pad'.

### Sign Hash without pin-pad

When the web or native application is responsible for showing the password input, the following request is used to sign a given hash:

```javascript
var data = {
      "pin":"...",
      "algorithmReference":"sha1",
      "data":"I2e+u/sgy7fYgh+DWA0p2jzXQ7E=",
      "osDialog": true
}
generic.sign(module, data, callback);
```

Response is a base64 encoded signed hash:

```javascript
{
  "success": true,
  "data": {
    "data" : "W7wqvWA8m9S...="
  }
}
```

The 'authenticationreference' property can contain the following values: sha1, sha256, sha512, md5.

### Sign Hash with pin-pad

When the pin entry is done on the pin-pad, the following request is used to sign a given hash:

```javascript
var data = {
      "algorithmReference":"sha1",
      "data":"I2e+u/sgy7fYgh+DWA0p2jzXQ7E=",
      "osDialog": false
}
generic.sign(module, data, callback);
```

Response is a base64 encoded signed hash:

```javascript
{
  "success": true,
  "data": {
    "data" : "W7wqvWA8m9S...="
  }
}
```

The 'algorithm\_reference' property can contain the following values: sha1, sha256, sha512, md5.

The core services lists connected readers, and if they have pin-pad capability. You can find more information in the Core Service documentation on how to verify card reader capabilities.

### Bulk Signing

It is possible to bulk sign data without having to re-enter the PIN by adding an optional  `bulk` parameter set to `true` to the request. Subsequent sign requests will not require the PIN to be re-entered until a request with `bulk` being set to `false` is sent, or the [Bulk Sign Reset](https://t1t.gitbook.io/t1c-js-guide-v3/v3.3.0-1/belgian-eid#bulk-pin-reset) method is called.

{% hint style="danger" %}
When using bulk signing, great care must be taken to validate that the first signature request was successful prior to sending subsequent requests. Failing to do this will likely result in the card being blocked.
{% endhint %}

```javascript
const data = {
    algorithm: "sha256",
    data: "E1uHACbPvhLew0gGmBH83lvtKIAKxU2/RezfBOsT6Vs=",
    pin: "1234"
}
const bulk = true;
generic.sign(module, data, bulk).then(res => {
}, err => {
    console.error(err)
})
```

### Bulk PIN Reset

The PIN set for bulk signing can be reset by calling this method.

```javascript
generic.resetBulkPin(module).then(res => {
}, err => {
    console.error(err)
})
```

Response will look like:

```javascript
{
    "success": true,
    "data": true
}
```

## Verify PIN

### Verify PIN without pin-pad

When the web or native application is responsible for showing the password input, the following request is used to verify a card holder PIN:

```javascript
var data = {
      "pin":"..."
}
generic.verifyPin(module, data, callback);
```

Response:

```javascript
{
  "verified": true
}
```

### Verify PIN with pin-pad

When the pin entry is done on the pin-pad, the following request is used to verify a given PIN:

```javascript
var data = {}
generic.verifyPin(module, data, callback);
```

Response:

```javascript
{
  "verified": true
}
```

## Authentication

The T1C-GCL is able to authenticate a card holder based on a challenge. The challenge can be:

* provided by an external service
* provided by the smart card\
  An authentication can be interpreted as a signature use case, the challenge is signed data, that can be validated in a back-end process.

  **External Challenge**

  An external challenge is provided in the data property of the following example:

```javascript
var data = {
  "pin": "...",
  "algorithm_reference": "sha1",
  "data":"I2e+u/sgy7fYgh+DWA0p2jzXQ7E="
}
generic.authenticate(module, data, callback);
```

Response:

```javascript
{
  "success": true,
  "data": {
    "data" : "W7wqvWA8m9S...="
  }
}
```

Take notice that the PIN property can be omitted when using a smart card reader with pin-pad capabilities.

## Get valid algorithms to use for Sign or Authenticate

Via the Trust1Connector generic modules you are able to retrieve available algorithms to use for Signing or Authenticate

```javascript
generic.allAlgoRefs(module, callback);
```

The response you can expect is a list of algorithms, an example can be found below (the values below are purely examplatory)

```javascript
{
    "success": true,
    "data": ["sha1", "sha256"]
}
```