Open GoogleCodeExporter opened 8 years ago
*hash = encryption (Sorry, I misspelled.)
Original comment by thenextw...@gmail.com
on 30 Mar 2014 at 11:54
Example with php:
function encrypt($data, $password) {
// Set a random salt
$salt = openssl_random_pseudo_bytes(8);
$salted = '';
$dx = '';
// Salt the key(176) and iv(16) = 192
while (strlen($salted) < 192) {
$dx = hash(sha512, $dx.$password.$salt, true);
$salted .= $dx;
}
$key = substr($salted, 0, 176);
$iv = substr($salted, 176,16);
$encrypted_data = openssl_encrypt($data, 'aes-256-cbc', $key, true, $iv);
return base64_encode('Salted__' . $salt . $encrypted_data);
}
function decrypt($edata, $password) {
$data = base64_decode($edata);
$salt = substr($data, 8, 8);
$ct = substr($data, 16);
$rounds = 3;
$data00 = $password.$salt;
$sha512_hash = array();
$sha512_hash[0] = hash(sha512, $data00, true);
$result = $sha512_hash[0];
for ($i = 1; $i < $rounds; $i++) {
$sha512_hash[$i] = hash(sha512, $sha512_hash[$i - 1].$data00, true);
$result .= $sha512_hash[$i];
}
$key = substr($result, 0, 176);
$iv = substr($result, 176,16);
return openssl_decrypt($ct, 'aes-256-cbc', $key, true, $iv);
}
Original comment by thenextw...@gmail.com
on 30 Mar 2014 at 8:02
Original issue reported on code.google.com by
thenextw...@gmail.com
on 30 Mar 2014 at 11:52