return AES256CBC_decrypt(base64url_decode($data['data']),$k,$i);
}
+function new_keypair($bits) {
+
+ $openssl_options = array(
+ 'digest_alg' => 'sha1',
+ 'private_key_bits' => $bits,
+ 'encrypt_key' => false
+ );
+
+ $conf = get_config('system','openssl_conf_file');
+ if($conf)
+ $openssl_options['config'] = $conf;
+
+ $result = openssl_pkey_new($openssl_options);
+
+ if(empty($result)) {
+ logger('new_keypair: failed');
+ return false;
+ }
+
+ // Get private key
+
+ $response = array('prvkey' => '', 'pubkey' => '');
+
+ openssl_pkey_export($result, $response['prvkey']);
+
+ // Get public key
+ $pkey = openssl_pkey_get_details($result);
+ $response['pubkey'] = $pkey["key"];
-function zot_encapsulate($data,$sender,$pubkey) {
-$res = aes_encapsulate($data,$pubkey);
-openssl_public_encrypt($sender,$s,$pubkey);
-$s1 = base64url_encode($s,true);
-
-return <<< EOT
-<?xml version='1.0' encoding='UTF-8'?>
-<zot:env xmlns:zot='http://purl.org/zot/1.0'>
- <zot:key>{$res['key']}</zot:key>
- <zot:iv>{$res['iv']}</zot:iv>
- <zot:sender>$s1</zot:sender>
- <zot:alg>AES-256-CBC</zot:alg>
- <zot:data type='application/magic-envelope+xml'>{$res['data']}</zot:data>
-</zot:env>
-EOT;
+ return $response;
}
-function zot_unencapsulate($data,$prvkey) {
- $ret = array();
- $c = array();
- $x = parse_xml_string($data);
- $c = array('key' => $x->key,'iv' => $x->iv,'data' => $x->data);
- openssl_private_decrypt(base64url_decode($x->sender),$s,$prvkey);
- $ret['sender'] = $s;
- $ret['data'] = aes_unencapsulate($x,$prvkey);
- return $ret;
-}
\ No newline at end of file