getAPK_signature and verifyAPKSignature (2709b5a6) · Commits · e / os / App Lounge

app/src/main/java/foundation/e/apps/application/model/IntegrityVerificationTask.kt

+30 −4

Original line number	Diff line number	Diff line
		@@ -23,7 +23,6 @@ import android.content.pm.PackageInfo
		import android.content.pm.PackageManager
		import android.content.pm.Signature
		import android.os.AsyncTask
		import android.os.Environment
		import android.os.Handler
		import android.os.Looper
		import android.util.Log
		@@ -49,6 +48,7 @@ import java.io.InputStream
		import java.security.MessageDigest
		import java.security.Security


		class IntegrityVerificationTask(
		private val applicationInfo: ApplicationInfo,
		private val fullData: FullData,
		@@ -65,7 +65,9 @@ class IntegrityVerificationTask(
		override fun doInBackground(vararg context: Context): Context {
		try {
		verificationSuccessful = if (isSystemApplication(fullData.packageName)) {
		verifySystemSignature(context[0])

		verifyAPKSignature(context[0])
		// verifySystemSignature(context[0])
		// verifySystemValues(context[0])

		} else if (isfDroidApplication(fullData.packageName)) {
		@@ -100,7 +102,31 @@ class IntegrityVerificationTask(
		}

		//get signature from apk and check
		private fun verifyAPKSignature(context: Context): Boolean {

		//get Signature from APK
		if (getAPKSignature(context)!=null) {
		return getAPKSignature(context)?.toCharsString() ==
		getSystemSignature(context.packageManager)?.toCharsString()
		}
		return false
		}

		private fun getAPKSignature(context: Context): Signature? {
		try {
		val fullPath: String = applicationInfo.getApkFile(
		context,
		fullData.basicData
		).absolutePath

		val releaseSig = context.packageManager.getPackageArchiveInfo(fullPath, PackageManager.GET_SIGNATURES)
		return getFirstSignature(releaseSig)

		} catch (e: PackageManager.NameNotFoundException) {
		Log.d(TAG, "Unable to find the package: android")
		}
		return null
		}


		private fun verifySystemValues(context: Context): Boolean {