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Modify en/decryption functions to be openssl-based - mcrypt_* functions are now deprecated as of PHP 7.1.0

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Nate
2019-02-28 18:22:34 -07:00
parent 36b32599f1
commit d799d42e1f
3 changed files with 11 additions and 6 deletions
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13
resources/functions.php
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@@ -1548,15 +1548,20 @@ function number_pad($number,$n) {
//encrypt a string
if (!function_exists('encrypt')) {
function encrypt($key, $str_to_enc) {
return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $str_to_enc, MCRYPT_MODE_CBC, md5(md5($key))));
function encrypt($key, $data) {
$encryption_key = base64_decode($key);
$iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length('aes-256-cbc'));
$encrypted = openssl_encrypt($data, 'aes-256-cbc', $encryption_key, 0, $iv);
return base64_encode($encrypted.'::'.$iv);
}
}
//decrypt a string
if (!function_exists('decrypt')) {
function decrypt($key, $str_to_dec) {
return rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5($key), base64_decode($str_to_dec), MCRYPT_MODE_CBC, md5(md5($key))), "\0");
function decrypt($key, $data) {
$encryption_key = base64_decode($key);
list($encrypted_data, $iv) = explode('::', base64_decode($data), 2);
return openssl_decrypt($encrypted_data, 'aes-256-cbc', $encryption_key, 0, $iv);
}
}