NodeJS binding of LibFreefare. LibFreefare is a library to manipulate Mifare NFC smart cards (Classic, DESFire, Ultralight, etc) over LibNFC. Your reader has to be compatible with LibNFC to work with this Library (Check out the compatibility matrix to know if your device is compatible)

Due to lack of time and testing material, the binding is not complete :

• Mifare Ultralight : fully Supported
• Mifare Classic 1K/4K : Partially supported (enough to authenticate, write and read a data block)
• Mifare DESFire : Partially supported (enough to select an application, authenticate in DES/3DES and read/write on a file)

If you need Freefare function which are currently not bound, submit an issue, a pull request or contact me by email.

You need at least NodeJS v6. Go to NodeJs website to know how to get it for your system.

You also need LibFreefare. Under debian you can do

apt-get install libfreefare0 libfreefare-dev

Finally use npm. to install this package

npm install freefare

You can find examples under the examples/ directory

When a Freefare object is created, it automatically initialize LibNFC. Once initialized, you can list available NFC devices.

Give a list of available NFC devices

Returns: Promise.<Array.<Device>>, A promise to the Device list.

A NibNFC compatible device that can read NFC tag. The open() method have to be executed before any other.

Open device for further communication

Returns: Promise, A promise to the end of the action.

Close device to release memory and device

Returns: Promise, A promise to the end of the action.

List of detected tags

Returns: Promise.<Array.<(Tag|MifareUltralightTag|MifareClassicTag|MifareDesfireTag)>>, A promise to the list of Tag

Abort command blocking the device like open().

Returns: Promise, A promise to the end of the action.

A Freefare compatible NFC tag

Get Tag type

Returns: string, The tag type between MIFARE_CLASSIC_1K, MIFARE_CLASSIC_4K, MIFARE_DESFIRE, MIFARE_ULTRALIGHT, MIFARE_ULTRALIGHT_C

Get Tag friendly name

Returns: string, The tag friendly name

Get Tag UID

Returns: string, The tag UID

A MIFARE Ultralight tag

Extends: Tag

Open tag for further communication

Returns: Promise, A promise to the end of the action.

Close tag to release memory and device

Returns: Promise, A promise to the end of the action.

Read a page on the tag

Parameters

• page: Number, The page number between 0 and 11

Returns: Promise.<Buffer>, A promise to the read data (in a 4 bytes buffer)

Write a page on the tag

Parameters

• page: Number, The page number between 0 and 11
• buf: Buffer, A buffer of 4 bytes to be written on the page

Returns: Promise, A promise to the end of the action.

A MIFARE Classic tag

Extends: Tag

Open tag for further communication

Returns: Promise, A promise to the end of the action.

Close tag to release memory and device

Returns: Promise, A promise to the end of the action.

After openning the tag, an authentication is required for further operation.

Parameters

• block: Number, The block number between 0 and 63 (for 1k)
• key: Buffer, The key
• keyType: String, "A" or "B"

Returns: Promise, A promise to the end of the action.

Read the given block

Parameters

• block: Number, The block number between 0 and 63 (for 1k)

Returns: Promise.<Buffer>, A promise to the read data (in a 16 bytes buffer)

Write on the given block

Parameters

• block: Number, The block number between 0 and 63 (for 1k)
• data: Buffer, A 16 byte buffer (for 1k)

Returns: Promise, A promise to the end of the action.

Initialize a value block, with the given value and address

Parameters

• block: Number, The block number between 0 and 63 (for 1k)
• value: Number, The Int32 value that will be stored
• adr: String, A 1 byte address which can be used to save the storage address of a block, when implementing a powerful backup management

Returns: Promise, A promise to the end of the action.

Read a value block

Parameters

• block: Number, The block number between 0 and 63 (for 1k)

Returns: Promise.<Object>, A promise to an object containing value and adr : {adr: 0, value: 0}

Increment the block value by a given amount and store it in the internal data register

Parameters

• block: Number, The block number between 0 and 63 (for 1k)
• amount: Number, The amount that will be added to the value

Returns: Promise, A promise to the end of the action.

Decrement the block value by a given amount and store it in the internal data register

Parameters

• block: Number, The block number between 0 and 63 (for 1k)
• amount: Number, The amount that will be remove from the value

Returns: Promise, A promise to the end of the action.

Put a block value from in the internal data register

Parameters

• block: Number, The block number between 0 and 63 (for 1k)

Returns: Promise, A promise to the end of the action.

Restore the internal data register to the given block value

Parameters

• block: Number, The block number between 0 and 63 (for 1k)

Returns: Promise, A promise to the end of the action.

A MIFARE DESFire tag

Extends: Tag

Open tag for further communication

Returns: Promise, A promise to the end of the action.

Close tag to release memory and device

Returns: Promise, A promise to the end of the action.

Authenticate with a DES key

Parameters

• KeyNum: Number, The number of the key
• key: Buffer, The 8 byte key

Returns: Promise, A promise to the end of the action.

Authenticate with a 3DES key

Parameters

• KeyNum: Number, The number of the key
• key: Buffer, The 16 byte key

Returns: Promise, A promise to the end of the action.

List application IDs (AID)

Returns: Promise.<Array.<Number>>, A promise to the AID list

Select an application

Parameters

• aid: Buffer, Application id in 3 byte Buffer

Returns: Promise, A promise to the end of the action.

List file IDs (AID)

Returns: Promise.<Array.<Number>>, A promise to the File ID list

Read the given file

Parameters

• file: Number, The file ID
• offset: Number, The number of bytes before we start reading in the file
• length: Number, The number of bytes we will read in the file

Returns: Promise.<Buffer>, A promise to the read data

Write on the given file

Parameters

• file: Number, The file ID
• offset: Number, The number of bytes before we start reading in the file
• length: Number, The number of bytes we will read in the file
• data: Buffer, A data buffer

Returns: Promise, A promise to the end of the action.