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Merge "Sync oemcrypto reference code" into sc-dev am: 6d1898f20f

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Original change: https://googleplex-android-review.googlesource.com/c/platform/vendor/widevine/+/15055360

Change-Id: I661a1372fb71a78bb6b161c9b3054d273fadec54
This commit is contained in:
TreeHugger Robot
2021-06-30 21:36:16 +00:00
committed by Automerger Merge Worker
parent f08ae7b4be 6d1898f20f
commit a7ecf86940
9 changed files with 30 additions and 95 deletions
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2
libwvdrmengine/oemcrypto/ref/src/oemcrypto_engine_ref.h
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@@ -50,7 +50,7 @@ typedef enum SessionType {
class CryptoEngine {
public:
static const uint32_t kApiVersion = 16;
static const uint32_t kMinorApiVersion = 3;
static const uint32_t kMinorApiVersion = 4;
static const int64_t kTimeInfoUpdateWindowInSeconds = 300;
// This is like a factory method, except we choose which version to use at

19
libwvdrmengine/oemcrypto/ref/src/oemcrypto_ref.cpp
View File

@@ -554,9 +554,12 @@ OEMCRYPTO_API OEMCryptoResult OEMCrypto_QueryKeyControl(
return OEMCrypto_ERROR_UNKNOWN_FAILURE;
}
uint32_t* block = reinterpret_cast<uint32_t*>(key_control_block);
if ((key_control_block_length == nullptr) ||
(*key_control_block_length < wvoec::KEY_CONTROL_SIZE)) {
if (key_control_block_length == nullptr) {
return OEMCrypto_ERROR_INVALID_CONTEXT;
}
if (*key_control_block_length < wvoec::KEY_CONTROL_SIZE) {
LOGE("[OEMCrypto_QueryKeyControl(): OEMCrypto_ERROR_SHORT_BUFFER]");
*key_control_block_length = wvoec::KEY_CONTROL_SIZE;
return OEMCrypto_ERROR_SHORT_BUFFER;
}
*key_control_block_length = wvoec::KEY_CONTROL_SIZE;
@@ -572,6 +575,9 @@ OEMCRYPTO_API OEMCryptoResult OEMCrypto_QueryKeyControl(
LOGE("[OEMCrypto_QueryKeyControl(): ERROR_INVALID_SESSION]");
return OEMCrypto_ERROR_INVALID_SESSION;
}
if (key_id_length > wvoec::KEY_ID_SIZE || key_id_length == 0) {
return OEMCrypto_ERROR_INVALID_CONTEXT;
}
const std::vector<uint8_t> key_id_str =
std::vector<uint8_t>(key_id, key_id + key_id_length);
if (!session_ctx->QueryKeyControlBlock(key_id_str, block)) {
@@ -596,7 +602,9 @@ OEMCrypto_SelectKey(const OEMCrypto_SESSION session, const uint8_t* key_id,
LOGE("[OEMCrypto_SelectKey(): ERROR_INVALID_SESSION]");
return OEMCrypto_ERROR_INVALID_SESSION;
}
if (key_id_length > wvoec::KEY_ID_SIZE || key_id_length == 0) {
return OEMCrypto_ERROR_INVALID_CONTEXT;
}
const std::vector<uint8_t> key_id_str =
std::vector<uint8_t>(key_id, key_id + key_id_length);
return session_ctx->SelectContentKey(key_id_str, cipher_mode);
@@ -1272,7 +1280,7 @@ OEMCRYPTO_API OEMCryptoResult OEMCrypto_GenerateRSASignature(
return OEMCrypto_ERROR_UNKNOWN_FAILURE;
}
if (signature_length == 0) {
if (signature_length == nullptr) {
LOGE("[OEMCrypto_GenerateRSASignature(): OEMCrypto_ERROR_INVALID_CONTEXT]");
return OEMCrypto_ERROR_INVALID_CONTEXT;
}
@@ -1289,8 +1297,7 @@ OEMCRYPTO_API OEMCryptoResult OEMCrypto_GenerateRSASignature(
return OEMCrypto_ERROR_SHORT_BUFFER;
}
if (message == nullptr || message_length == 0 || signature == nullptr ||
signature_length == 0) {
if (message == nullptr || message_length == 0 || signature == nullptr) {
LOGE("[OEMCrypto_GenerateRSASignature(): OEMCrypto_ERROR_INVALID_CONTEXT]");
return OEMCrypto_ERROR_INVALID_CONTEXT;
}

2
libwvdrmengine/oemcrypto/ref/src/oemcrypto_rsa_key_shared.cpp
View File

@@ -1,5 +1,5 @@
// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
// source code may only be used and distributed under the Widevine Master
// source code may only be used and distributed under the Widevine
// License Agreement.
//
// Reference implementation of OEMCrypto APIs

2
libwvdrmengine/oemcrypto/ref/src/oemcrypto_rsa_key_shared.h
View File

@@ -1,5 +1,5 @@
// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
// source code may only be used and distributed under the Widevine Master
// source code may only be used and distributed under the Widevine
// License Agreement.
//
// Reference implementation of OEMCrypto APIs

6
libwvdrmengine/oemcrypto/ref/src/oemcrypto_session.cpp
View File

@@ -227,7 +227,7 @@ bool SessionContext::DeriveKey(const std::vector<uint8_t>& key,
return false;
}
if (!CMAC_Init(cmac_ctx, &key[0], key.size(), cipher, 0)) {
if (!CMAC_Init(cmac_ctx, &key[0], key.size(), cipher, nullptr)) {
LOGE("[DeriveKey(): OEMCrypto_ERROR_CMAC_FAILURE]");
CMAC_CTX_free(cmac_ctx);
return false;
@@ -521,7 +521,7 @@ OEMCryptoResult SessionContext::GenerateCertSignature(
size_t* signature_length) {
// TODO(b/67735947): Add ECC cert support.
if (message == nullptr || message_length == 0 || signature == nullptr ||
signature_length == 0) {
signature_length == nullptr) {
LOGE("OEMCrypto_ERROR_INVALID_CONTEXT");
return OEMCrypto_ERROR_INVALID_CONTEXT;
}
@@ -571,7 +571,7 @@ OEMCryptoResult SessionContext::GenerateRSASignature(
const uint8_t* message, size_t message_length, uint8_t* signature,
size_t* signature_length, RSA_Padding_Scheme padding_scheme) {
if (message == nullptr || message_length == 0 || signature == nullptr ||
signature_length == 0) {
signature_length == nullptr) {
LOGE("OEMCrypto_ERROR_INVALID_CONTEXT");
return OEMCrypto_ERROR_INVALID_CONTEXT;
}

16
libwvdrmengine/oemcrypto/ref/src/oemcrypto_usage_table_ref.cpp
View File

@@ -407,11 +407,12 @@ OEMCryptoResult UsageTable::LoadUsageEntry(
if (new_entry->generation_number() != generation_numbers_[index]) {
LOGE("Generation SKEW: %ld -> %ld", new_entry->generation_number(),
generation_numbers_[index]);
if ((new_entry->generation_number() + 1 < generation_numbers_[index]) ||
(new_entry->generation_number() - 1 > generation_numbers_[index])) {
if ((new_entry->generation_number() + 1 == generation_numbers_[index]) ||
(new_entry->generation_number() - 1 == generation_numbers_[index])) {
status = OEMCrypto_WARNING_GENERATION_SKEW;
} else {
return OEMCrypto_ERROR_GENERATION_SKEW;
}
status = OEMCrypto_WARNING_GENERATION_SKEW;
}
sessions_[index] = session;
*entry = std::move(new_entry);
@@ -583,11 +584,12 @@ OEMCryptoResult UsageTable::LoadUsageTableHeader(
if (clear->master_generation != master_generation_number_) {
LOGE("Generation SKEW: %ld -> %ld", clear->master_generation,
master_generation_number_);
if ((clear->master_generation + 1 < master_generation_number_) ||
(clear->master_generation - 1 > master_generation_number_)) {
if ((clear->master_generation + 1 == master_generation_number_) ||
(clear->master_generation - 1 == master_generation_number_)) {
status = OEMCrypto_WARNING_GENERATION_SKEW;
} else {
return OEMCrypto_ERROR_GENERATION_SKEW;
}
status = OEMCrypto_WARNING_GENERATION_SKEW;
}
int64_t* stored_generations =
reinterpret_cast<int64_t*>(&clear_buffer[0] + sizeof(SignedHeaderBlock));
@@ -615,7 +617,7 @@ OEMCryptoResult UsageTable::MoveEntry(UsageTableEntry* entry,
return OEMCrypto_ERROR_UNKNOWN_FAILURE;
}
sessions_[new_index] = sessions_[entry->index()];
sessions_[entry->index()] = 0;
sessions_[entry->index()] = nullptr;
entry->set_index(new_index);
generation_numbers_[new_index] = master_generation_number_;

2
libwvdrmengine/oemcrypto/ref/src/oemcrypto_usage_table_ref.h
View File

@@ -107,7 +107,7 @@ class UsageTable {
OEMCryptoResult ShrinkUsageTableHeader(uint32_t new_table_size,
uint8_t* header_buffer,
size_t* header_buffer_length);
void ReleaseEntry(uint32_t index) { sessions_[index] = 0; }
void ReleaseEntry(uint32_t index) { sessions_[index] = nullptr; }
void IncrementGeneration();
static size_t SignedHeaderSize(size_t count);

2
libwvdrmengine/oemcrypto/ref/src/wvcrc.cpp
View File

@@ -2,7 +2,7 @@
// source code may only be used and distributed under the Widevine
// License Agreement.
//
// Compute CRC32/MPEG2 Checksum. Needed for verification of WV Keybox.
// Compute CRC32 Checksum. Needed for verification of WV Keybox.
//
#include "platform.h"
#include "wvcrc32.h"

74
libwvdrmengine/oemcrypto/ref/test/oemcrypto_wvcrc32_unittest.cpp
View File

@@ -1,74 +0,0 @@
// Copyright 2021 Google LLC. All Rights Reserved. This file and proprietary
// source code may only be used and distributed under the Widevine License
// Agreement.
//
// Reference implementation of OEMCrypto APIs
//
#include <gtest/gtest.h>
#include "wvcrc32.h"
namespace wvoec_ref {
uint32_t ComputeCrc32(const std::string& s) {
return wvcrc32(reinterpret_cast<const uint8_t*>(s.data()), s.size());
}
uint32_t ComputeCrc32Cont(const std::string& s, uint32_t prev_crc) {
return wvcrc32Cont(reinterpret_cast<const uint8_t*>(s.data()), s.size(),
prev_crc);
}
TEST(OEMCryptoWvCrc32Test, BasicTest) {
EXPECT_EQ(0xF88AC628, ComputeCrc32("abcdefg"));
EXPECT_EQ(0xDF520F72, ComputeCrc32("Widevine"));
EXPECT_EQ(0x0376E6E7, ComputeCrc32("123456789"));
EXPECT_EQ(0xBA62119E,
ComputeCrc32("The quick brown fox jumps over the lazy dog"));
}
TEST(OEMCryptoWvCrc32Test, StreamTest) {
const std::vector<std::string> parts = {"The ", "quick", " brown ",
"fox", " jumps ", "over",
" the ", "lazy", " dog"};
uint32_t crc = wvcrc32Init();
for (const auto& part : parts) {
crc = ComputeCrc32Cont(part, crc);
}
EXPECT_EQ(0xBA62119E, crc);
}
TEST(OEMCryptoWvCrc32Test, Keybox) {
// clang-format off
const uint8_t kKeyboxData[128] = {
// deviceID = WidevineCRCTestKeyBox
0x57, 0x69, 0x64, 0x65, 0x76, 0x69, 0x6e, 0x65,
0x43, 0x52, 0x43, 0x54, 0x65, 0x73, 0x74, 0x4b,
0x65, 0x79, 0x62, 0x6f, 0x78, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
// key = random
0x8a, 0x7c, 0xda, 0x3e, 0x09, 0xd9, 0x8e, 0xd5,
0x47, 0x47, 0x00, 0x84, 0x5a, 0x1f, 0x52, 0xd4,
// data = random
0x98, 0xa5, 0x00, 0x19, 0x8b, 0xfe, 0x54, 0xfd,
0xca, 0x4d, 0x26, 0xa3, 0xfa, 0xaa, 0x3b, 0x6c,
0x35, 0xfe, 0x03, 0x7c, 0xbf, 0x35, 0xba, 0xce,
0x31, 0xb5, 0x1e, 0x3c, 0x49, 0xd6, 0x3f, 0x9c,
0x3a, 0xde, 0x9b, 0x58, 0xcc, 0x54, 0x8d, 0xc0,
0x4b, 0x04, 0xcc, 0xee, 0xae, 0x4d, 0x9f, 0x90,
0xd3, 0xf3, 0xfe, 0x23, 0x26, 0x13, 0x56, 0x80,
0xe4, 0x3b, 0x79, 0x22, 0x69, 0x5d, 0xd6, 0xb7,
0xa0, 0x0e, 0x7e, 0x07, 0xcd, 0x1a, 0x15, 0xca,
// magic
'k', 'b', 'o', 'x',
// crc
0x09, 0x7b, 0x7e, 0xcc
};
// clang-format on
const uint32_t crc_computed = wvcrc32n(kKeyboxData, 124);
uint32_t crc_current;
memcpy(&crc_current, &kKeyboxData[124], 4);
EXPECT_EQ(crc_computed, crc_current);
}
} // namespace wvoec_ref