1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "remoting/host/pin_hash.h"
6
7 #include "base/base64.h"
8 #include "base/logging.h"
9 #include "remoting/protocol/authentication_method.h"
10 #include "remoting/protocol/me2me_host_authenticator_factory.h"
11
12 namespace remoting {
13
MakeHostPinHash(const std::string & host_id,const std::string & pin)14 std::string MakeHostPinHash(const std::string& host_id,
15 const std::string& pin) {
16 std::string hash = protocol::AuthenticationMethod::ApplyHashFunction(
17 protocol::AuthenticationMethod::HMAC_SHA256, host_id, pin);
18 std::string hash_base64;
19 base::Base64Encode(hash, &hash_base64);
20 return "hmac:" + hash_base64;
21 }
22
VerifyHostPinHash(const std::string & hash,const std::string & host_id,const std::string & pin)23 bool VerifyHostPinHash(const std::string& hash,
24 const std::string& host_id,
25 const std::string& pin) {
26 remoting::protocol::SharedSecretHash hash_parsed;
27 if (!hash_parsed.Parse(hash)) {
28 LOG(FATAL) << "Invalid hash.";
29 return false;
30 }
31 std::string hash_calculated =
32 remoting::protocol::AuthenticationMethod::ApplyHashFunction(
33 hash_parsed.hash_function, host_id, pin);
34 return hash_calculated == hash_parsed.value;
35 }
36
37 } // namespace remoting
38