46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright 2019 Google LLC.
|
|
//
|
|
// This software is licensed under the terms defined in the Widevine Master
|
|
// License Agreement. For a copy of this agreement, please contact
|
|
// widevine-licensing@google.com.
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Description:
|
|
// Helper methods for the Root of Trust Id.
|
|
|
|
#include "common/rot_id_util.h"
|
|
|
|
#include <memory>
|
|
|
|
#include "glog/logging.h"
|
|
#include "absl/strings/str_cat.h"
|
|
#include "common/crypto_util.h"
|
|
#include "common/ec_key.h"
|
|
#include "common/sha_util.h"
|
|
|
|
namespace widevine {
|
|
|
|
std::string GenerateRotIdHash(const std::string& salt, uint32_t system_id,
|
|
const std::string& unique_id_hash) {
|
|
if (salt.empty() || unique_id_hash.empty()) {
|
|
return "";
|
|
}
|
|
return Sha256_Hash(absl::StrCat(salt, system_id, unique_id_hash));
|
|
}
|
|
|
|
std::string GenerateUniqueIdHash(const std::string& unique_id,
|
|
const std::string& salt) {
|
|
if (unique_id.empty()) {
|
|
LOG(WARNING) << "unique_id should not be empty.";
|
|
return "";
|
|
}
|
|
if (salt.empty()) {
|
|
LOG(WARNING) << "salt should not be empty.";
|
|
return "";
|
|
}
|
|
return widevine::Sha256_Hash(absl::StrCat(unique_id, salt));
|
|
}
|
|
|
|
} // namespace widevine
|