Jaosrikate

override fun getCipherForEncryption(keyName: String): Cipher {
        val cipher = getCipher()
        val secretKey = getOrCreateSecretKey(keyName)
        cipher.init(Cipher.ENCRYPT_MODE, secretKey)
        return cipher
}

Jaosrikate

private fun getOrCreateSecretKey(keyName: String): SecretKey {
        // If Secretkey was previously created for that keyName, then grab and return it.
        try {
            val keyStore = KeyStore.getInstance(ANDROID_KEYSTORE)
            try {
                keyStore.load(null) // Keystore must be loaded before it can be accessed
                keyStore.getKey(keyName, null)?.let {
                    return it as SecretKey
                }
            } catch (ex: Exception) {

Jaosrikate

class LoginActivity : AppCompatActivity() {

    private lateinit var biometricPrompt: BiometricPrompt
    private lateinit var promptInfo: BiometricPrompt.PromptInfo

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_login)
        
        biometricPrompt = createBiometricPrompt()

Jaosrikate

val cipher = CryptographyManager().getCipherForEncryption(BIO_KEY_NAME)

            biometricPrompt.authenticate(
                buildBiometricPrompt(),
                BiometricPrompt.CryptoObject(cipher)
            )

Jaosrikate

val biometricManager = BiometricManager.from(this)

when (biometricManager.canAuthenticate(BIOMETRIC_STRONG)) {
                BiometricManager.BIOMETRIC_ERROR_UNSUPPORTED,
                BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE,
                BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE,
                BiometricManager.BIOMETRIC_ERROR_SECURITY_UPDATE_REQUIRED,
                -> showErrorNoHardwareBio()
                BiometricManager.BIOMETRIC_ERROR_NONE_ENROLLED,
                BiometricManager.BIOMETRIC_STATUS_UNKNOWN,

Jaosrikate

private fun buildBiometricPrompt(): BiometricPrompt.PromptInfo {
        return BiometricPrompt.PromptInfo.Builder()
            .setTitle(getString(R.string.bio_authen_title))
            .setDescription(getString(R.string.bio_authen_description))
            .setNegativeButtonText(getString(R.string.bio_authen_negative_button))
            .setConfirmationRequired(false) //Allows user to authenticate without performing an action, such as pressing a button, after their biometric credential is accepted.
            .setAllowedAuthenticators(BIOMETRIC_STRONG)
            .build()
}

Jaosrikate

def biometric_version = '1.1.0'
//Biometric
implementation "androidx.biometric:biometric:$biometric_version"

Jaosrikate

import android.content.Context
import android.graphics.drawable.GradientDrawable
import androidx.core.content.ContextCompat

class GradientConstant {

    companion object {
        
        fun goldGradient(activity: Context): GradientDrawable {
            val colors: IntArray = intArrayOf(

Jaosrikate

package com.example.myapplication;

import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.SpannableString;
import android.text.style.ForegroundColorSpan;
import android.text.style.RelativeSizeSpan;
import android.text.style.StyleSpan;

Jaosrikate

// Retrofit2/OkHttp3 CookieJar Interceptor kotlin
// JaoSrikate

import android.util.Log
import android.webkit.CookieManager
import io.reactivex.Observable
import okhttp3.*
import okhttp3.logging.HttpLoggingInterceptor
import retrofit2.Call
import retrofit2.Response