php - Why open_ssl function returns strange charartes using DES-EDE3-CBC?
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I have a problem with decrypting a hex string using the openssl_decrypt function. It returns strange characters.
The function is this:
$ params_decrypt = openssl_decrypt ($ params_hex, "DES-EDE3-CBC", "e238a0d8c9d82a8083b878e2fafc76216d3d0776a63bdf39", OPENSSL_ZERO_PADDING, "cca6662d330");
echo "<br> <br> string_decrypt4345643xxxxYaEs <br> <br>". $ params_decrypt;
Returns this on the web page configured for UTF-8
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Regards.
Answer
Solution:
Solved.
I forgot to convert hexadecimal value to string.
$data = urlencode($_GET["PARAM"]);
$method = "DES-EDE3-CBC";
$key = "e238a0d8c9d82a8083b878e2fafc76216d3d0776a63bdf39";
$iv = "cca6662d3304033c";
$options = 0;
// transform the key from hex to string
$key = pack("H*", $key);
// transform the iv from hex to string
$iv = pack("H*", $iv);
// decrypt
$dec = openssl_decrypt(urldecode($data), $method, $key, $options, $iv);
Regards.
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