PassEncoder

Apple Wallet (formerly Passbook) pass encoding and signing in Swift.

Features

Modern Swift API
Allows you to specify custom pass data
Add other files (images, JSON, etc)
Manifest generation
Signing support
File system managed seamlessly
Get pass Data easily

Requirements

macOS 10.12+ or Linux (with zlib development package)
Xcode 9.0+
Swift 5.2+
OpenSSL

Installation

Swift Package Manager

Add the following line to your dependencies section of Package.swift:

.package(url: "https://github.com/aydenp/PassEncoder.git", .upToNextMajor(from: "1.0.0"))

and add “PassEncoder” to your target’s dependencies.

Usage

// Create our encoder
if let encoder = PassEncoder(passDataURL: directory.appendingPathComponent("pass.json")) {
    // Add a nice icon
    encoder.addFile(from: directory.appendingPathComponent("icon.png"))
    let passData = encoder.encode(signingInfo: (certificate: URL_TO_CERT.PEM, password: CERT_PASSWORD))
    // Your archived .pkpass file is in passData as Data
}

Before using the library, you’ll also need to set the Apple WWDR certificate URL, which you can read about below.

Heads up! Operations in this library are all synchronous, so it is advisable to run them on a separate OperationQueue so that they do not block your thread.

Creating and preparing your certificate

You need to repeat this step for each different passTypeId you have in your pass.json.

Go to the Apple Developer Pass Type IDs page and create your pass type.
Go to the certificate section and follow the instructions to create a certificate for your pass.
Download the certificate, and ensure it is named Certificates.p12.
Run the following command: openssl pkcs12 -in Certificates.p12 -out PassCert.pem.
Your pass certificate is now stored in PassCert.pem!

You’ll also need to download the Apple Worldwide Developer Relations Intermediate Certificate - G4 file to sign passes.

Download the intermediate certificate from here.
Import it into Keychain Access (double click it).
Find it in Keychain Access, and export it as a .pem file.

Set the PassSigner‘s WWDR URL to it in your code.

 PassSigner.shared.appleWWDRCertURL = URL(fileURLWithPath: PATH_TO_WWDR_CERT.PEM)

Documentation

To take full advantage of the package, check out the documentation and see all of the methods and variables that are made available to you.

Contributing

Feel free to contribute to the source code of PassEncoder to make it something even better! Just try to adhere to the general coding style throughout, to make it as readable as possible.

If you find an issue in the code or while using it, create an issue. If you can, you’re encouraged to contribute and make a pull request.

License

This project is licensed under the MIT license. Please make sure you comply with its terms while using it in any way.