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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, C. (1972a, December 08). Research report on project 088. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/research-report-on-project-088
Callender, M. D. (1974a, December 04). Fashion merchandising . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/fashion-merchandising-
Kornobis, K. (1976a, September 01). PAKOM: The price-sales functions of competing brands . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/pakom-the-price-sales-functions-of-competing-brands-
Spieksma, H. (1976a, November 24). Future developments in milkreplacer. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/future-developments-in-milkreplacer
Seydel, J. (1994a, June 15). Visible success. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/visible-success
Cooper, S. (1994a, June 01). How to optimise the go/no go decisions. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/how-to-optimise-the-go-no-go-decisions
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
Leeflang and Plat (1984a, June 15). Consumer response in an era of stagflation . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/consumer-response-in-an-era-of-stagflation-
van Heteren and Asselbergs (1974a, September 01). Price behaviour models. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/price-behaviour-models