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, April 01). Qualitative research into count line purchasing in self-service grocers. ANA - ESOMAR. Retrieved March 31, 2023, from
Hesse , W. (1986a, June 15). The self-service bank. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/the-self-service-bank
Hesse , W. (1986a, June 15). The self-service bank (German). ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/the-self-service-bank-german-
Pfleiderer, R. (1986a, June 15). The acceptance of 'electronic banking' services by private customers (German). ANA - ESOMAR. Retrieved March 31, 2023, from
Pfleiderer, R. (1986a, June 15). The acceptance of 'electronic banking' services by private customers. ANA - ESOMAR. Retrieved March 31, 2023, from
https://ana.esomar.org/documents/the-acceptance-of-electronic-banking-services-by-private-customers