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. (1976a, May 01). Distalgesic advertising research. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/distalgesic-advertising-research
, C. (1975a, November 01). Qualitative research on Close-Up advertising. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/qualitative-research-on-close-up-advertising
, C. (1977a, January 01). Quality street pack research . ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/quality-street-pack-research-
, C. (1977a, March 01). Research report on attitudes towards the concept of a pre-wash stain remover . ANA - ESOMAR. Retrieved March 31, 2023, from
, C. (1977a, April 01). Quality street pack research. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/quality-street-pack-research
, C. (1978a, February 01). Qualitative research on Project Starky. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/qualitative-research-on-project-starky
, C. (1970a, August 01). Project 061. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/project-061
, C. (1979a, May 01). Shanghai and Rouge concept resesrch. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/shanghai-and-rouge-concept-resesrch
, C. (1979a, April 01). Popeye: Concept Evaluation. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/popeye-concept-evaluation