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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Bratina and Zanetti (1972a, September 01). Innovative marketing between industrial civilization and culture. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/innovative-marketing-between-industrial-civilization-and-culture
, A. (2001a, February 01). Revue Française du Marketing 2001 (N. 182). ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/revue-fran-aise-du-marketing-2001-n-182-
Stapel, J. (1956a, June 15). Research can and does help advertising. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/research-can-and-does-help-advertising
Tannus and Azambuja (1996a, September 01). The Iguassu project . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/the-iguassu-project-
Bose and Khanna (1996a, September 01). The little emperor . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/the-little-emperor--4835
Patterson, R. (1997a, June 15). Loyalty cards. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/loyalty-cards
Cunningham, T. (2000a, July 01). Ethnic marketing. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/ethnic-marketing
Weichsel, R. (1968a, August 01). The problems of operative market survey systems. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/the-problems-of-operative-market-survey-systems
Tuvee, L. (1985a, June 15). A new challenge: Strategic research (French). ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/a-new-challenge-strategic-research-french-