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. (1975a, July 07). Qualitative assessment of alternative main-benefit expressions for Three Wishes beauty soap. ANA - ESOMAR. Retrieved March 31, 2023, from
, C. (1975a, December 01). Qualitative research on a third Hai Karate fragrance advertising. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/qualitative-research-on-a-third-hai-karate-fragrance-advertising
, C. (1976a, May 01). Distalgesic advertising research. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/distalgesic-advertising-research
, C. (1976a, November 01). Dunlop worldbeaters advertising concept research. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/dunlop-worldbeaters-advertising-concept-research
, C. (1979a, February 01). Qualitative research into Kenco coffee bags advertising . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/qualitative-research-into-kenco-coffee-bags-advertising-
, C. (1978a, December 01). Cabana advertising research . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/cabana-advertising-research-
, C. (1979a, March 01). Qualitative research on Dairylea. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/qualitative-research-on-dairylea
, C. (1977a, October 02). Motorists attitudes to Firestone Tyres. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/motorists-attitudes-to-firestone-tyres
, C. (1970a, August 01). Project 061. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/project-061