https://github.com/itznotabug/checkoutverifier

Verify your In-App Purchase receipts & protect your Apps from hacking, patching used by Piracy Apps like Lucky Patcher.
https://github.com/itznotabug/checkoutverifier

android android-iap android-in-app-billing android-in-app-purchase android-protect-apps android-protection android-security

Last synced: about 1 month ago
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Verify your In-App Purchase receipts & protect your Apps from hacking, patching used by Piracy Apps like Lucky Patcher.

• Host: GitHub
• URL: https://github.com/itznotabug/checkoutverifier
• Owner: ItzNotABug
• License: apache-2.0
• Created: 2019-01-31T17:02:21.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2021-07-26T08:46:49.000Z (over 3 years ago)
• Last Synced: 2024-10-08T16:00:20.690Z (about 1 month ago)
• Topics: android, android-iap, android-in-app-billing, android-in-app-purchase, android-protect-apps, android-protection, android-security
• Language: Kotlin
• Size: 729 KB
• Stars: 61
• Watchers: 4
• Forks: 8
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# CheckoutVerifier







[![Codacy Badge](https://app.codacy.com/project/badge/Grade/bb126216417b45668b81e08090d2d081)](https://www.codacy.com/gh/ItzNotABug/CheckoutVerifier/dashboard?utm_source=github.com&utm_medium=referral&utm_content=ItzNotABug/CheckoutVerifier&utm_campaign=Badge_Grade)

CheckoutVerifier helps you Verify your In-App Purchase receipts & protect your Apps from hacking, patching used by Piracy Apps like Lucky Patcher.


Since I was using these classes in every project, the copy / pasting of classes was annoying so thought of releasing it as a library which might be of help to others too!

## How does it work?

Well, the library sends the Signed Json Response & Signature that you receive after a purchase is completed on a specified server url where it checks the signature of that response data with your BASE64 Key provided to you in your Developer Console.

## Set Up

#### * Get Licensing API Key

Navigate to Developer Console & Select your App.


Go to Development Tools > Services & API.


Copy the BASE64 Licensing Key

#### * Creating a Verifying PHP File

Just a create a File & name it as `verify.php` or anything you want.


Paste the following code in it & Upload it to your server.

```php

```

#### * Implementing Library (Gradle)

Note: Add `mavenCentral()` in `repositories` block.

```gradle

dependencies {

    // CheckoutVerifier now internally uses Kotlin Coroutines.

    implementation 'com.lazygeniouz:checkout-verifier:$library_version'

}

```

#### * CheckoutVerifier

Just pass on the required `PurchaseBundle` in the Constructor & call `authenticate();`


The `authenticate()` returns a `Result` object.





If the connection to the server was successful & a result was returned, 


`CompletionResult(isVerified: Boolean)` is returned, 


`ErrorResult(exception: Exception)` otherwise.


Example:

```kotlin

yourScope.launch {

    val purchaseBundle = PurchaseBundle(url, jsonResponse, signature)

    when (val result = CheckoutVerifier(purchaseBundle).authenticate()) {

        is CompletionResult -> {

            val verified = result.isVerified

            // Do something

        }

      is ErrorResult -> Log.d(TAG, result.exception.message)

    }

}

```