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. (1973a, June 01). Hot and cold packs . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/hot-and-cold-packs-
, C. (1973a, June 21). Research research into English tourism for Inbucon/Aic Ltd. on behalf of the English Tourist Board. ANA - ESOMAR. Retrieved March 31, 2023, from
, C. (1973a, July 31). Whitebread Super Premium Pale Ale name and pack concept testing. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/whitebread-super-premium-pale-ale-name-and-pack-concept-testing
, C. (1973a, October 03). C37 name and advertising qualitative research. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/c37-name-and-advertising-qualitative-research
, C. (1973a, November 01). Qualitative research on skin care. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/qualitative-research-on-skin-care
, C. (1973a, August 18). Qualitative research on Aquafresh commercials. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/qualitative-research-on-aquafresh-commercials
, C. (1973a, September 11). Qualitative research on fish food. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/qualitative-research-on-fish-food
, C. (1973a, June 21). Qualitative research on Fly-Tox short life evaporator. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/qualitative-research-on-fly-tox-short-life-evaporator
, C. (1973a, May 08). Yardley after-shave assessment of Mainstream and Special concepts. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/yardley-after-shave-assessment-of-mainstream-and-special-concepts