smartcard-interface

A simple package for sending commands into smartcards.

Note: This simply wraps the smartcard package on mac/linux and pcsc on windows.

Installation

``bash
$ npm install smartcard-interface
`

Usage

`js
const { DeviceManager } = require("smartcard-interface");

let devices = new DeviceManager();

// Called when a device is inserted.
devices.on("activate", (e) => {
let device = e.device;

console.log("Device activated", device.name);

device.on("insert", async (e) => {
let card = e.card;

console.log("Card inserted", card.getAtr());

card.connect();

// Select an applet.
let selectResponse = await card.sendCommand(Buffer.from([
0x00,
0xA4,
0x04,
0x00,
0x09,
...Buffer.from("000000000000000000", "hex") // AID
]));

console.log(selectResponse);

// Send a command into the applet.
let pubKey = await card.sendCommand(Buffer.from([
0x00, // CLA
0x32, // INS
0x00, // P1
0x00, // P2
0x20 // LE
]));

console.log(pubKey);

card.close();
});

device.on("removed", (e) => {
let card = e.card;

console.log("Card removed", card.getAtr());
});
});

`

Documentation

Classes

Card

Container for cards

Device

Container for card readers

Card

Container for cards

Kind: global class
Properties

| Name | Type | Description |
| --- | --- | --- |
| card | smartcard.Card | The card to wrap |
| device | Device | Parent device |


* Card
* new Card()
* .getAtr() ⇒ string
* .connect()
* .close()
* .sendCommand(APDUBuffer) ⇒ Promise.<Device>

$3

Wraps a smartcard.Card

$3

Returns the card atr.

Kind: instance method of Card
Returns: string - card atr

$3

Connects to the card. Do this before sending commands.

Kind: instance method of Card

$3

Closes the current connection.

Kind: instance method of Card

$3

Executes the APDUBuffer on the card.

Kind: instance method of Card
Returns: Promise.<Device> - Output APDU

| Param | Type | Description |
| --- | --- | --- |
| APDUBuffer | Buffer | Buffer of bytes |

Example
`js
let aid = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00];

card.connect(); // You need to connect in order to issue commands.

// Selects the aid above.
let response = await card.sendCommand(Buffer.from([
[0x00, 0xA4, 0x04, 0x00, 0x00, 0x09, ...aid]
]));

console.log("Response", response); // Buffer < 90 00 >

card.close(); // Don't forget to close the connection when you're done.
`

Device

Container for card readers

Kind: global class
Properties

| Name | Type | Description |
| --- | --- | --- |
| name | string | Device name. |
| index | number | Device index. |


* Device
* new Device(device, index)
* "insert"
* "remove"

$3

Wraps a smartcard.Device


| Param | Type | Description |
| --- | --- | --- |
| device | smartcard.Device | The device to wrap |
| index | number | Raw device index usually 0` |

$3

Fired when a card is inserted into the reader.

Kind: event emitted by Device
Properties

| Name | Type | Description |
| --- | --- | --- |
| card | Card | The card that was inserted. |

$3

Fired when a card is removed from the reader.

Kind: event emitted by Device
Properties

| Name | Type | Description |
| --- | --- | --- |
| card | Card | The card that was removed. |