widevine-partner/android
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[DO NOT MERGE] Revert "Restructed reference root of trust (1/3 Keybox)"

Browse Source 
This reverts commit e4ee4eb404.

Reason for revert: Feature missed deadline

Bug: 135283522
Change-Id: I4ee2caac2dadfcc3e145b9c9b977d216d4edd929
This commit is contained in:
Alex Dale
2021-06-02 19:59:55 +00:00
parent 06b637ed95
commit ad0d66c7e6
8 changed files with 199 additions and 524 deletions
Download Patch File Download Diff File Expand all files Collapse all files

66
libwvdrmengine/oemcrypto/ref/src/oemcrypto_keybox_ref.h
View File

@@ -7,58 +7,38 @@
#ifndef OEMCRYPTO_KEYBOX_REF_H_
#define OEMCRYPTO_KEYBOX_REF_H_
#include <memory>
#include <vector>
#include "OEMCryptoCENCCommon.h"
#include "oemcrypto_types.h"
#include "oemcrypto_key_ref.h"
namespace wvoec_ref {
const int DEVICE_KEY_LENGTH = 16;
typedef uint8_t WvKeyboxKey[DEVICE_KEY_LENGTH];
const int KEY_DATA_LENGTH = 72;
typedef uint8_t WvKeyboxKeyData[KEY_DATA_LENGTH];
enum KeyboxError { NO_ERROR, BAD_CRC, BAD_MAGIC, OTHER_ERROR };
// Widevine keybox
class WvKeybox {
public:
// Validates keybox data using the following rules:
// 1. Data is not null
// 2. Keybox size
// 3. Matching magic
// 4. CRC-32 check
static OEMCryptoResult ValidateData(const uint8_t* keybox_data,
size_t keybox_length);
// Creates a keybox from the provided keybox data.
// Provided keybox data must be the proper length, but does
// not need to be valid.
// Once created, keyboxes are immutable.
static std::unique_ptr<WvKeybox> Create(const uint8_t* keybox_data,
size_t keybox_length);
// Gets the device ID from the keybox.
// Similar to the expected behavior of OEMCrypto_GetDeviceID().
OEMCryptoResult GetDeviceId(uint8_t* device_id,
size_t* device_id_length) const;
// Returns the keybox device ID directly. Intended to be used
// for core message generation.
std::vector<uint8_t> DeviceId() const;
// Returns the keybox device key directly. Intended to be used
// for key derivation.
std::vector<uint8_t> DeviceKey() const;
// Gets the keybox data.
// Similar to the expected behavior of OEMCrypto_GetKeyData().
OEMCryptoResult GetKeyData(uint8_t* key_data, size_t* key_data_length) const;
// Checks the current keybox instantiation that it is valid.
// Similar to the expected behavior of OEMCrypto_IsKeyboxValid().
OEMCryptoResult IsKeyboxValid() const;
WvKeybox();
~WvKeybox() {}
private:
WvKeybox() {}
KeyboxError Validate();
const std::vector<uint8_t>& device_id() { return device_id_; }
std::vector<uint8_t>& device_key() { return device_key_; }
const WvKeyboxKeyData& key_data() { return key_data_; }
size_t key_data_length() { return KEY_DATA_LENGTH; }
bool InstallKeybox(const uint8_t* keybox, size_t keyBoxLength);
wvoec::WidevineKeybox raw_keybox_;
private:
bool loaded_;
std::vector<uint8_t> device_id_;
std::vector<uint8_t> device_key_;
WvKeyboxKeyData key_data_;
uint8_t magic_[4];
uint8_t crc_[4];
};
} // namespace wvoec_ref