37 lines
794 B
PHP
37 lines
794 B
PHP
<?php
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function decrypt_string($str) {
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$pair = explode(":", $str);
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if (count($pair) == 2) {
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@$iv = base64_decode($pair[0]);
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@$encstr = base64_decode($pair[1]);
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if ($iv && $encstr) {
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$key = hash('SHA256', FEED_CRYPT_KEY, true);
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$str = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $encstr,
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MCRYPT_MODE_CBC, $iv);
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if ($str) return rtrim($str);
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}
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}
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return false;
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}
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function encrypt_string($str) {
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$key = hash('SHA256', FEED_CRYPT_KEY, true);
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$iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128,
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MCRYPT_MODE_CBC), MCRYPT_RAND);
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$encstr = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key, $str,
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MCRYPT_MODE_CBC, $iv);
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$iv_base64 = base64_encode($iv);
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$encstr_base64 = base64_encode($encstr);
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return "$iv_base64:$encstr_base64";
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}
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?>
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