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1<?php
2namespace BuyerKiosk\Security;
3
4class Encryption {
5    private $key;
6    private $cipher = "aes-256-cbc";
7
8    public function __construct($key) {
9        $this->key = $key;
10    }
11
12    public function encrypt($plaintext) {
13        $iv = str_repeat("\0", 16);  // Create 16-byte IV
14        $ciphertext = openssl_encrypt($plaintext, $this->cipher, $this->key, OPENSSL_RAW_DATA, $iv);
15        return base64_encode($ciphertext);
16    }
17
18    public function decrypt($encrypted) {
19        $iv = str_repeat("\0", 16);  // Use same 16-byte IV
20        $ciphertext = base64_decode($encrypted); // Ensure base64 decoding
21        error_log("Ciphertext: " . print_r($ciphertext, true));
22        $decrypted = openssl_decrypt($ciphertext, $this->cipher, $this->key, OPENSSL_RAW_DATA, $iv);
23
24        if ($decrypted === false) {
25            error_log("Decryption failed: " . openssl_error_string());
26        }
27
28        return $decrypted;
29    }
30}