function encrypt($plaintext ) { // hash the key to a fixed length $hashed_key = hash('sha256', 'kDLTzj2QGCenCXW8s44h4ddDjeJiuSP2', true); // pad the plaintext with whitespace to be a multiple of 16 bytes $padded_plaintext = str_pad($plaintext, strlen($plaintext) + 16 - strlen($plaintext) % 16); // encrypt the padded plaintext with the hashed key $iv = openssl_random_pseudo_bytes(16); $ciphertext = openssl_encrypt($padded_plaintext, 'AES-256-CBC', $hashed_key, OPENSSL_RAW_DATA, $iv); $ciphertext = base64_encode($iv . $ciphertext); return $ciphertext; } function decrypt($ciphertext) { // hash the key to a fixed length $hashed_key = hash('sha256', 'kDLTzj2QGCenCXW8s44h4ddDjeJiuSP2', true); // decrypt the ciphertext with the hashed key $ciphertext = base64_decode($ciphertext); $iv = substr($ciphertext, 0, 16); $ciphertext = substr($ciphertext, 16); $padded_plaintext = openssl_decrypt($ciphertext, 'AES-256-CBC', $hashed_key, OPENSSL_RAW_DATA, $iv); $plaintext = rtrim($padded_plaintext, "\0"); return $plaintext; } ?>
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Ruchmann and Torres (2003a, May 04). Rediscovering Latin American households . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/rediscovering-latin-american-households-
Wren, Odlova and Drtina (2005a, April 19). Insights into the purchase decision process of low income customers in Central and Eastern Europe. ANA - ESOMAR. Retrieved March 31, 2023, from
Strauss, Caraballo, Wright and Williams (2005a, April 19). Kids, parents and the retail shopping dynamic. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/kids-parents-and-the-retail-shopping-dynamic
Rusby, P. A. (1962a, June 15). Research into housewife shopping patterns in Great Britain. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/research-into-housewife-shopping-patterns-in-great-britain
McPhee and Laybourne (2007a, November 12). Veni Vidi Vici. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/veni-vidi-vici
Trepanier and Lebudel (2017a, September 04). Everyone searches!. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/everyone-searches-
Gennart, De Vuyst, Naessens and De Ruyck (2013a, June 23). Inspirational customers dialogues. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/inspirational-customers-dialogues
Mariampolski, H. (1997a, June 15). Solving the problems of observational research. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/solving-the-problems-of-observational-research
Cooper, Pinijarom and Salari (2000a, November 01). Modern Asian everyday lives . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/modern-asian-everyday-lives-