| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "components/cryptauth/cryptauth_enrollment_utils.h" |
| |
| #include <math.h> |
| #include <stddef.h> |
| |
| #include "base/base64url.h" |
| #include "base/md5.h" |
| #include "base/sha1.h" |
| |
| namespace cryptauth { |
| |
| int64_t HashStringToInt64(const std::string& string) { |
| base::MD5Context context; |
| base::MD5Init(&context); |
| base::MD5Update(&context, string); |
| |
| base::MD5Digest digest; |
| base::MD5Final(&digest, &context); |
| |
| // Fold the digest into an int64_t value. |digest.a| is a 16-byte array, so we |
| // sum the two 8-byte halves of the digest to create the hash. |
| int64_t hash = 0; |
| for (size_t i = 0; i < sizeof(digest.a); ++i) { |
| uint8_t byte = digest.a[i]; |
| hash += static_cast<int64_t>(byte) << (i % sizeof(int64_t)); |
| } |
| |
| return hash; |
| } |
| |
| std::string CalculateDeviceUserId(const std::string& device_id, |
| const std::string& user_id) { |
| std::string device_user_id; |
| base::Base64UrlEncode(base::SHA1HashString(device_id + "|" + user_id), |
| base::Base64UrlEncodePolicy::INCLUDE_PADDING, |
| &device_user_id); |
| return device_user_id; |
| } |
| |
| } // namespace cryptauth |