husaynhakeem

husaynhakeem

createAndStoreSecretKey()
val cipher = createAndConfigureCipher()
val cryptoObject = CryptoObject(cipher)
biometricPrompt.authenticate(promptinfo, cyptoObject)

husaynhakeem

override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
      val cipher = result.cryptoObject?.cipher ?: return
      val plainData = "Hello world!" // Whatever data you want to encrypt
      val cipherData = cipher.doFinal(plainData.toByteArray(Charsets.UTF_8)) // Encrypted data
      // Do something with the encrypted data
}

husaynhakeem

val biometricManager = BiometricManager.from(context)
val authenticationTypes = BIOMETRIC_WEAK or DEVICE_CREDENTIAL
val canAuthenticate = biometricManager.canAuthenticate(authenticationTypes)
if (canAuthenticate == BIOMETRIC_SUCCESS) {
    // The device supports weak biometric authentication or non-biometric authentication, e.g. PIN
}

husaynhakeem

husaynhakeem

val biometricPrompt = BiometricPrompt(
  activity, // Activity or Fragment
  executor, // Optional. Defines the executor on which the callbacks are triggered
  authenticationCallback
)

// Show the authentication prompt
biometricPrompt.authenticate(promptInfo)

husaynhakeem

val builder = PromptInfo.Builder()
    .setTitle(/* Title */)
    .setSubtitle(/* Subtitle */)
    .setDescription(/* Description */)

// Set a negative button. It would typically display "Cancel"
builder.setNegativeButtonText(/* Negative button label. E.g. "Cancel" */)

// Show a confirmation button after authentication succeeds
// Useful for certain operations, e.g. Ones that involve payment

husaynhakeem

val authenticationCallback = object : BiometricPrompt.AuthenticationCallback() {
    override fun onAuthenticationSucceeded(result: BiometricPrompt.AuthenticationResult) {
        // Authentication succeeded
    }

    override fun onAuthenticationError(errorCode: Int, errString: CharSequence) {
        // Authentication errored out. Verify error code and message
    }

    override fun onAuthenticationFailed() {

husaynhakeem

val biometricManager = BiometricManager.from(context)
val canAuthenticate = biometricManager.canAuthenticate()
if (canAuthenticate == BIOMETRIC_SUCCESS) {
    // The device supports biometric authentication
}

husaynhakeem