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Merge pull request #125 from anuragkanojiya1/development
Added Password Protection and biometric authentication by Encrypted Shared Preferences and biometrics in android
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49 changes: 49 additions & 0 deletions
49
android/app/src/main/java/rocks/poopjournal/fucksgiven/data/SecureStorage.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| package rocks.poopjournal.fucksgiven.data | ||
|
|
||
| import android.content.Context | ||
| import android.content.SharedPreferences | ||
| import androidx.security.crypto.EncryptedSharedPreferences | ||
| import androidx.security.crypto.MasterKeys | ||
|
|
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| fun getEncryptedSharedPreferences(context: Context): SharedPreferences { | ||
| val masterKeyAlias = MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC) | ||
|
|
||
| return EncryptedSharedPreferences.create( | ||
| "secure_prefs", | ||
| masterKeyAlias, | ||
| context, | ||
| EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV, | ||
| EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM | ||
| ) | ||
| } | ||
|
|
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| fun savePassword(context: Context, password: String) { | ||
| val sharedPreferences = getEncryptedSharedPreferences(context) | ||
| val editor = sharedPreferences.edit() | ||
| editor.putString("user_password", password) | ||
| editor.apply() | ||
| } | ||
|
|
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| fun getPassword(context: Context): String? { | ||
| val sharedPreferences = getEncryptedSharedPreferences(context) | ||
| return sharedPreferences.getString("user_password", null) | ||
| } | ||
|
|
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| fun clearStoredPassword(context: Context) { | ||
| val sharedPreferences = getEncryptedSharedPreferences(context) | ||
| val editor = sharedPreferences.edit() | ||
| editor.remove("user_password") | ||
| editor.apply() | ||
| } | ||
|
|
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| fun setPasswordProtectionEnabled(context: Context, enabled: Boolean) { | ||
| val sharedPreferences = getEncryptedSharedPreferences(context) | ||
| val editor = sharedPreferences.edit() | ||
| editor.putBoolean("password_protection_enabled", enabled) | ||
| editor.apply() | ||
| } | ||
|
|
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| fun getPasswordProtectionEnabled(context: Context): Boolean { | ||
| val sharedPreferences = getEncryptedSharedPreferences(context) | ||
| return sharedPreferences.getBoolean("password_protection_enabled", false) | ||
| } |
83 changes: 83 additions & 0 deletions
83
...c/main/java/rocks/poopjournal/fucksgiven/presentation/component/BiometricPromptManager.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,83 @@ | ||
| package rocks.poopjournal.fucksgiven.presentation.component | ||
|
|
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| import android.os.Build | ||
| import androidx.appcompat.app.AppCompatActivity | ||
| import androidx.biometric.BiometricManager | ||
| import androidx.biometric.BiometricManager.Authenticators.BIOMETRIC_STRONG | ||
| import androidx.biometric.BiometricManager.Authenticators.DEVICE_CREDENTIAL | ||
| import androidx.biometric.BiometricPrompt | ||
| import androidx.biometric.BiometricPrompt.PromptInfo | ||
| import kotlinx.coroutines.channels.Channel | ||
| import kotlinx.coroutines.flow.receiveAsFlow | ||
|
|
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| class BiometricPromptManager( | ||
| private val activity: AppCompatActivity | ||
| ) { | ||
| private val resultChannel = Channel<BiometricResult>() | ||
| val promptResults = resultChannel.receiveAsFlow() | ||
|
|
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| fun showBiometricPrompt( | ||
| title: String, | ||
| description: String | ||
| ) { | ||
| val manager = BiometricManager.from(activity) | ||
| val authenticators = if(Build.VERSION.SDK_INT >= 30) { | ||
| BIOMETRIC_STRONG or DEVICE_CREDENTIAL | ||
| } else BIOMETRIC_STRONG | ||
|
|
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| val promptInfo = PromptInfo.Builder() | ||
| .setTitle(title) | ||
| .setDescription(description) | ||
| .setAllowedAuthenticators(authenticators) | ||
|
|
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| if(Build.VERSION.SDK_INT < 30) { | ||
| promptInfo.setNegativeButtonText("Cancel") | ||
| } | ||
|
|
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| when(manager.canAuthenticate(authenticators)) { | ||
| BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE -> { | ||
| resultChannel.trySend(BiometricResult.HardwareUnavailable) | ||
| return | ||
| } | ||
| BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE -> { | ||
| resultChannel.trySend(BiometricResult.FeatureUnavailable) | ||
| return | ||
| } | ||
| BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED -> { | ||
| resultChannel.trySend(BiometricResult.AuthenticationNotSet) | ||
| return | ||
| } | ||
| else -> Unit | ||
| } | ||
|
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| val prompt = BiometricPrompt( | ||
| activity, | ||
| object : BiometricPrompt.AuthenticationCallback() { | ||
| override fun onAuthenticationError(errorCode: Int, errString: CharSequence) { | ||
| super.onAuthenticationError(errorCode, errString) | ||
| resultChannel.trySend(BiometricResult.AuthenticationError(errString.toString())) | ||
| } | ||
|
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| override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) { | ||
| super.onAuthenticationSucceeded(result) | ||
| resultChannel.trySend(BiometricResult.AuthenticationSuccess) | ||
| } | ||
|
|
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| override fun onAuthenticationFailed() { | ||
| super.onAuthenticationFailed() | ||
| resultChannel.trySend(BiometricResult.AuthenticationFailed) | ||
| } | ||
| } | ||
| ) | ||
| prompt.authenticate(promptInfo.build()) | ||
| } | ||
|
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| sealed interface BiometricResult { | ||
| data object HardwareUnavailable: BiometricResult | ||
| data object FeatureUnavailable: BiometricResult | ||
| data class AuthenticationError(val error: String): BiometricResult | ||
| data object AuthenticationFailed: BiometricResult | ||
| data object AuthenticationSuccess: BiometricResult | ||
| data object AuthenticationNotSet: BiometricResult | ||
| } | ||
| } |
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