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Configuring ProGuard Rules to Enable Obfuscation

Follow these steps to configure ProGuard rules that enable obfuscation:
  1. To enable obfuscation for any of your build types, define the setting in the relevant
    build.gradle
     file for your app.
    buildTypes {
    release {
        isMinifyEnabled = true
        proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
    }
}
  2. If you are using ProGuard as an obfuscation tool in your app, add these rules to the
    proguard-rules.pro
     file.
    # OkHttp
-keepattributes Signature
-keepattributes *Annotation*
-dontwarn com.squareup.okhttp.**
-keep class com.squareup.okhttp.* { *; }
-dontwarn okio.**

# Acceptance Devices
-keep class io.mpos.** { *; }
-dontwarn io.mpos.**
-keep class com.visa.vac.tc.** {*;}
-keep class com.nimbusds.jose.** {*;}
-keep class org.bouncycastle.** {*;}
-keep class retrofit2.** { *; }
-keep interface retrofit2.** { *; }
-keep class com.visa.auth.** { *; }
-dontwarn com.visa.auth.**
-keep class androidx.** { *; }

# Visa Sensory Branding
-keep class com.visa.SensoryBrandingView

# Mastercard Sonic Branding 
-keep class com.mastercard.sonic.BuildConfig {*;}