/**
 * This method encrypts and decrypts a user's phone number using AES-256 encryption.
 *
 * The 'aes-256' cipher is specified in the encryption configuration, ensuring that the data
 * is secured with a 256-bit encryption key. AES-256 is a widely recognized standard for 
 * strong encryption, providing a high level of security by using a key length of 256 bits.
 * This method guarantees that the phone number is securely encrypted and can be safely
 * decrypted when needed.
 */

Two Types of Functions being used Here DEFINED in Helper(MasterEncrypt-MasterDecrypt)
1.For Data Transportation
2.Internal Storage (Database)

1 For This the Open SSL Encryption Used.
2 Its a Default CI3 Func used AES-256 CBC Encryption
