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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "components/proximity_auth/cryptauth/cryptauth_enrollment_utils.h" | 5 #include "components/proximity_auth/cryptauth/cryptauth_enrollment_utils.h" |
6 | 6 |
7 #include <math.h> | 7 #include <math.h> |
| 8 #include <stddef.h> |
8 | 9 |
9 #include "base/base64url.h" | 10 #include "base/base64url.h" |
10 #include "base/md5.h" | 11 #include "base/md5.h" |
11 #include "base/sha1.h" | 12 #include "base/sha1.h" |
12 | 13 |
13 namespace proximity_auth { | 14 namespace proximity_auth { |
14 | 15 |
15 int64_t HashStringToInt64(const std::string& string) { | 16 int64_t HashStringToInt64(const std::string& string) { |
16 base::MD5Context context; | 17 base::MD5Context context; |
17 base::MD5Init(&context); | 18 base::MD5Init(&context); |
18 base::MD5Update(&context, string); | 19 base::MD5Update(&context, string); |
19 | 20 |
20 base::MD5Digest digest; | 21 base::MD5Digest digest; |
21 base::MD5Final(&digest, &context); | 22 base::MD5Final(&digest, &context); |
22 | 23 |
23 // Fold the digest into an int64 value. |digest.a| is a 16-byte array, so we | 24 // Fold the digest into an int64_t value. |digest.a| is a 16-byte array, so we |
24 // sum the two 8-byte halves of the digest to create the hash. | 25 // sum the two 8-byte halves of the digest to create the hash. |
25 int64_t hash = 0; | 26 int64_t hash = 0; |
26 for (size_t i = 0; i < sizeof(digest.a); ++i) { | 27 for (size_t i = 0; i < sizeof(digest.a); ++i) { |
27 uint8_t byte = digest.a[i]; | 28 uint8_t byte = digest.a[i]; |
28 hash += static_cast<int64_t>(byte) << (i % sizeof(int64_t)); | 29 hash += static_cast<int64_t>(byte) << (i % sizeof(int64_t)); |
29 } | 30 } |
30 | 31 |
31 return hash; | 32 return hash; |
32 } | 33 } |
33 | 34 |
34 std::string CalculateDeviceUserId(const std::string& device_id, | 35 std::string CalculateDeviceUserId(const std::string& device_id, |
35 const std::string& user_id) { | 36 const std::string& user_id) { |
36 std::string device_user_id; | 37 std::string device_user_id; |
37 base::Base64UrlEncode(base::SHA1HashString(device_id + "|" + user_id), | 38 base::Base64UrlEncode(base::SHA1HashString(device_id + "|" + user_id), |
38 base::Base64UrlEncodePolicy::INCLUDE_PADDING, | 39 base::Base64UrlEncodePolicy::INCLUDE_PADDING, |
39 &device_user_id); | 40 &device_user_id); |
40 return device_user_id; | 41 return device_user_id; |
41 } | 42 } |
42 | 43 |
43 } // namespace proximity_auth | 44 } // namespace proximity_auth |
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