package com.momana.bhromo.memoir.database;
import android.util.Base64;

import java.security.spec.AlgorithmParameterSpec;
import java.security.spec.KeySpec;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.spec.PBEParameterSpec;

public class StringEncryption {
    Cipher ecipher;
    Cipher dcipher;

    // 8-byte Salt
    byte[] salt = {
            (byte)0xA9, (byte)0x9B, (byte)0xC8, (byte)0x32,
            (byte)0x56, (byte)0x35, (byte)0xE3, (byte)0x03
    };

    int iterationCount = 19;

    public StringEncryption(String pass) {
        try {
            // Create the key
            KeySpec keySpec = new PBEKeySpec(pass.toCharArray(), salt, iterationCount);

            SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec);
            ecipher = Cipher.getInstance(key.getAlgorithm());
            dcipher = Cipher.getInstance(key.getAlgorithm());

            // Prepare the parameter to the ciphers
            AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);

            // Create the ciphers
            ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
            dcipher.init(Cipher.DECRYPT_MODE, key, paramSpec);
        } catch (Exception ignored) {}
    }

    public String encrypt(String str) throws Exception {
        // Encode the string into bytes using utf-8
        byte[] utf8 = str.getBytes("UTF8");
        // Encrypt
        byte[] enc = ecipher.doFinal(utf8);
        // Encode bytes to base64 to get a string
        return Base64.encodeToString(enc, Base64.DEFAULT);
    }

    public String decrypt(String str) throws Exception {
        // Decode base64 to get bytes
        // byte[] dec = new sun.misc.BASE64Decoder().decodeBuffer(str);
        byte[] dec = Base64.decode(str, Base64.DEFAULT);
        // Decrypt
        byte[] utf8 = dcipher.doFinal(dec);
        // Decode using utf-8
        return new String(utf8, "UTF8");
    }
}


Create StringEncryption class