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(1) Move the CryptoMode enum definition to media_cas_packager_sdk partners can use it when calling libraries in the SDK.

Browse Source 
(2) Add a new enum value for kDvbCsa.
(3) Allow caller to specify CTR, CBC, as well as CSA when using the ecm genertor from the SDK.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=219707788
This commit is contained in:
Fang Yu
2018-11-01 15:16:25 -07:00
parent 8c474ebada
commit 5ac3c5a95b
17 changed files with 231 additions and 101 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
media_cas_packager_sdk/public/BUILD
View File

@@ -29,7 +29,7 @@ cc_binary(
deps = [
":wv_cas_ca_descriptor",
":wv_cas_ecm",
":wv_cas_status",
":wv_cas_types",
],
)
@@ -63,7 +63,7 @@ cc_library(
hdrs = ["wv_cas_ca_descriptor.h"],
copts = PUBLIC_COPTS,
deps = [
":wv_cas_status",
":wv_cas_types",
"//base",
"@abseil_repo//absl/base:core_headers",
"@abseil_repo//absl/strings",
@@ -79,7 +79,7 @@ cc_test(
srcs = ["wv_cas_ca_descriptor_test.cc"],
deps = [
":wv_cas_ca_descriptor",
":wv_cas_status",
":wv_cas_types",
"//testing:gunit_main",
"//protos/public:media_cas_proto",
],
@@ -91,7 +91,7 @@ cc_library(
hdrs = ["wv_cas_ecm.h"],
copts = PUBLIC_COPTS,
deps = [
":wv_cas_status",
":wv_cas_types",
"//base",
"@abseil_repo//absl/base:core_headers",
"@abseil_repo//absl/memory",
@@ -102,7 +102,6 @@ cc_library(
"//media_cas_packager_sdk/internal:ecm",
"//media_cas_packager_sdk/internal:ecm_generator",
"//media_cas_packager_sdk/internal:fixed_key_fetcher",
"//protos/public:media_cas_proto",
],
)
@@ -112,26 +111,26 @@ cc_test(
srcs = ["wv_cas_ecm_test.cc"],
deps = [
":wv_cas_ecm",
":wv_cas_status",
":wv_cas_types",
"//testing:gunit_main",
"@abseil_repo//absl/strings",
],
)
cc_library(
name = "wv_cas_status",
srcs = ["wv_cas_status.cc"],
hdrs = ["wv_cas_status.h"],
name = "wv_cas_types",
srcs = ["wv_cas_types.cc"],
hdrs = ["wv_cas_types.h"],
copts = PUBLIC_COPTS,
deps = ["//base"],
)
cc_test(
name = "wv_cas_status_test",
name = "wv_cas_types_test",
size = "small",
srcs = ["wv_cas_status_test.cc"],
srcs = ["wv_cas_types_test.cc"],
deps = [
":wv_cas_status",
":wv_cas_types",
"//testing:gunit_main",
],
)

2
media_cas_packager_sdk/public/wv_cas_ca_descriptor.cc
View File

@@ -14,7 +14,7 @@
#include "absl/strings/str_cat.h"
#include "util/status.h"
#include "common/string_util.h"
#include "media_cas_packager_sdk/public/wv_cas_status.h"
#include "media_cas_packager_sdk/public/wv_cas_types.h"
#include "protos/public/media_cas.pb.h"
namespace widevine {

2
media_cas_packager_sdk/public/wv_cas_ca_descriptor.h
View File

@@ -12,7 +12,7 @@
#include <stddef.h>
#include <string>
#include "media_cas_packager_sdk/public/wv_cas_status.h"
#include "media_cas_packager_sdk/public/wv_cas_types.h"
namespace widevine {
namespace cas {

2
media_cas_packager_sdk/public/wv_cas_ca_descriptor_test.cc
View File

@@ -11,7 +11,7 @@
#include <string>
#include "testing/gunit.h"
#include "media_cas_packager_sdk/public/wv_cas_status.h"
#include "media_cas_packager_sdk/public/wv_cas_types.h"
#include "protos/public/media_cas.pb.h"
using ::testing::Test;

18
media_cas_packager_sdk/public/wv_cas_ecm.cc
View File

@@ -8,7 +8,6 @@
#include "media_cas_packager_sdk/public/wv_cas_ecm.h"
#include <stddef.h>
#include <memory>
#include <utility>
#include <vector>
@@ -22,19 +21,15 @@
#include "media_cas_packager_sdk/internal/ecm.h"
#include "media_cas_packager_sdk/internal/ecm_generator.h"
#include "media_cas_packager_sdk/internal/fixed_key_fetcher.h"
#include "media_cas_packager_sdk/public/wv_cas_status.h"
#include "protos/public/media_cas.pb.h"
#include "media_cas_packager_sdk/public/wv_cas_types.h"
namespace widevine {
namespace cas {
namespace {
static constexpr size_t kCryptoModeCbc = 0;
static constexpr size_t kCryptoModeCtr = 1;
EcmInitParameters CreateEcmInitParameters(int content_iv_size,
bool key_rotation_enabled,
int crypto_mode) {
CryptoMode crypto_mode) {
EcmInitParameters params;
if (content_iv_size == 8) {
params.content_iv_size = kIvSize8;
@@ -42,7 +37,7 @@ EcmInitParameters CreateEcmInitParameters(int content_iv_size,
params.content_iv_size = kIvSize16;
}
params.key_rotation_enabled = key_rotation_enabled;
params.crypto_mode = CasCryptoMode::CTR;
params.crypto_mode = crypto_mode;
// Internal ECM class can hold entitlement keys for multiple tracks.
// So we need to set a default track type here to be associated with
// the entitlement keys set later.
@@ -53,7 +48,7 @@ EcmInitParameters CreateEcmInitParameters(int content_iv_size,
} // namespace
WvCasStatus WvCasEcm::Initialize(int content_iv_size, bool key_rotation_enabled,
int crypto_mode) {
CryptoMode crypto_mode) {
if (initialized_) {
LOG(ERROR) << "Cannot initialize an instance of WvCasEcm more than once";
return UNAVAILABLE;
@@ -64,11 +59,6 @@ WvCasStatus WvCasEcm::Initialize(int content_iv_size, bool key_rotation_enabled,
}
content_iv_size_ = content_iv_size;
key_rotation_enabled_ = key_rotation_enabled;
if (crypto_mode != kCryptoModeCtr) {
LOG(ERROR) << "Only CTR crypto mode is supported by Widevine plugin for "
"content encryption";
return INVALID_ARGUMENT;
}
crypto_mode_ = crypto_mode;
initialized_ = true;

10
media_cas_packager_sdk/public/wv_cas_ecm.h
View File

@@ -16,7 +16,7 @@
#include <utility>
#include <vector>
#include "media_cas_packager_sdk/public/wv_cas_status.h"
#include "media_cas_packager_sdk/public/wv_cas_types.h"
namespace widevine {
namespace cas {
@@ -42,9 +42,7 @@ class WvCasEcm {
// if this is 'true' only subsequent call to GenerateEcm will be allowed,
// if this is 'false' only subsequent call to GenerateSingleKeyEcm will
// be allowed
// - |crypto_mode| crypto mode for encrypting content,
// kCryptoModeCbc = 0, kCryptoModeCtr = 1
// only CTR is supported by Widevine CAS plugin for now
// - |crypto_mode| crypto mode for encrypting content
//
// Returns:
// - A status indicating whether there was any error during initialization
@@ -52,7 +50,7 @@ class WvCasEcm {
// Note:
// - 'even'/'odd' key in the ECM will be be encrypted using AEC_CBC
virtual WvCasStatus Initialize(int content_iv_size, bool key_rotation_enabled,
int crypto_mode);
CryptoMode crypto_mode);
// Generate an ECM containing two keys (even and odd). Can be called when
// |key_rotation_enabled| is initialized to 'true'.
@@ -108,7 +106,7 @@ class WvCasEcm {
bool initialized_ = false;
int content_iv_size_;
bool key_rotation_enabled_;
int crypto_mode_;
CryptoMode crypto_mode_;
};
} // namespace cas

129
media_cas_packager_sdk/public/wv_cas_ecm_test.cc
View File

@@ -11,7 +11,7 @@
#include "testing/gunit.h"
#include "absl/strings/escaping.h"
#include "absl/strings/str_cat.h"
#include "media_cas_packager_sdk/public/wv_cas_status.h"
#include "media_cas_packager_sdk/public/wv_cas_types.h"
using ::testing::Test;
@@ -34,31 +34,24 @@ class WvCasEcmTest : public Test {
TEST_F(WvCasEcmTest, InitializeTwice) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 8,
/* key_rotation_enabled= */ true,
/* crypto_mode= */ 1));
CryptoMode::kAesCtr));
EXPECT_EQ(UNAVAILABLE,
wv_cas_ecm_.Initialize(/* content_iv_size= */ 8,
/* key_rotation_enabled= */ true,
/* crypto_mode= */ 1));
CryptoMode::kAesCtr));
}
TEST_F(WvCasEcmTest, InitializeInvalidContentIvSize) {
EXPECT_EQ(INVALID_ARGUMENT,
wv_cas_ecm_.Initialize(/* content_iv_size= */ 4,
/* key_rotation_enabled= */ true,
/* crypto_mode= */ 1));
}
TEST_F(WvCasEcmTest, InitializeUnsupportedCryptoMode) {
EXPECT_EQ(INVALID_ARGUMENT,
wv_cas_ecm_.Initialize(/* content_iv_size= */ 8,
/* key_rotation_enabled= */ true,
/* crypto_mode= */ 0));
CryptoMode::kAesCtr));
}
TEST_F(WvCasEcmTest, InitializeKeyRotationEnabledThenGenerateSingleKeyEcm) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 8,
/* key_rotation_enabled= */ true,
/* crypto_mode= */ 1));
CryptoMode::kAesCtr));
std::string actual_ecm;
EXPECT_EQ(UNAVAILABLE,
wv_cas_ecm_.GenerateSingleKeyEcm("", "", "", "", &actual_ecm));
@@ -67,7 +60,7 @@ TEST_F(WvCasEcmTest, InitializeKeyRotationEnabledThenGenerateSingleKeyEcm) {
TEST_F(WvCasEcmTest, InitializeKeyRotationDisabledThenGenerateEcm) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 8,
/* key_rotation_enabled= */ false,
/* crypto_mode= */ 1));
CryptoMode::kAesCtr));
std::string actual_ecm;
EXPECT_EQ(UNAVAILABLE,
wv_cas_ecm_.GenerateEcm("", "", "", "", "", "", &actual_ecm));
@@ -76,7 +69,7 @@ TEST_F(WvCasEcmTest, InitializeKeyRotationDisabledThenGenerateEcm) {
TEST_F(WvCasEcmTest, GenerateEcmInvalidContentIv) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 8,
/* key_rotation_enabled= */ true,
/* crypto_mode= */ 1));
CryptoMode::kAesCtr));
std::string actual_ecm;
EXPECT_EQ(INVALID_ARGUMENT,
wv_cas_ecm_.GenerateEcm(
@@ -91,7 +84,7 @@ TEST_F(WvCasEcmTest, GenerateEcmInvalidContentIv) {
TEST_F(WvCasEcmTest, GenerateSingleKeyEcmInvalidContentIv) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 8,
/* key_rotation_enabled= */ false,
/* crypto_mode= */ 1));
CryptoMode::kAesCtr));
std::string actual_ecm;
EXPECT_EQ(INVALID_ARGUMENT,
wv_cas_ecm_.GenerateSingleKeyEcm(
@@ -101,10 +94,10 @@ TEST_F(WvCasEcmTest, GenerateSingleKeyEcmInvalidContentIv) {
/* entitlement_key= */ kEntitlementKey, &actual_ecm));
}
TEST_F(WvCasEcmTest, GenerateEcm8BytesContentIvSuccess) {
TEST_F(WvCasEcmTest, GenerateEcm8BytesContentIvCtrSuccess) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 8,
/* key_rotation_enabled= */ true,
/* crypto_mode= */ 1));
CryptoMode::kAesCtr));
std::string actual_ecm;
EXPECT_EQ(OK, wv_cas_ecm_.GenerateEcm(
@@ -124,10 +117,10 @@ TEST_F(WvCasEcmTest, GenerateEcm8BytesContentIvSuccess) {
absl::BytesToHexString(actual_ecm));
}
TEST_F(WvCasEcmTest, GenerateSingleKeyEcm8BytesContentIvSuccess) {
TEST_F(WvCasEcmTest, GenerateSingleKeyEcm8BytesContentIvCtrSuccess) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 8,
/* key_rotation_enabled= */ false,
/* crypto_mode= */ 1));
CryptoMode::kAesCtr));
std::string actual_ecm;
EXPECT_EQ(OK, wv_cas_ecm_.GenerateSingleKeyEcm(
@@ -143,10 +136,10 @@ TEST_F(WvCasEcmTest, GenerateSingleKeyEcm8BytesContentIvSuccess) {
absl::BytesToHexString(actual_ecm));
}
TEST_F(WvCasEcmTest, GenerateEcm16BytesContentIvSuccess) {
TEST_F(WvCasEcmTest, GenerateEcm16BytesContentIvCtrSuccess) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 16,
/* key_rotation_enabled= */ true,
/* crypto_mode= */ 1));
CryptoMode::kAesCtr));
std::string actual_ecm;
EXPECT_EQ(OK, wv_cas_ecm_.GenerateEcm(
@@ -168,10 +161,10 @@ TEST_F(WvCasEcmTest, GenerateEcm16BytesContentIvSuccess) {
absl::BytesToHexString(actual_ecm));
}
TEST_F(WvCasEcmTest, GenerateSingleKeyEcm16BytesContentIvSuccess) {
TEST_F(WvCasEcmTest, GenerateSingleKeyEcm16BytesContentIvCtrSuccess) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 16,
/* key_rotation_enabled= */ false,
/* crypto_mode= */ 1));
CryptoMode::kAesCtr));
std::string actual_ecm;
EXPECT_EQ(OK, wv_cas_ecm_.GenerateSingleKeyEcm(
@@ -188,5 +181,95 @@ TEST_F(WvCasEcmTest, GenerateSingleKeyEcm16BytesContentIvSuccess) {
absl::BytesToHexString(actual_ecm));
}
TEST_F(WvCasEcmTest, GenerateEcm16BytesContentIvCbcSuccess) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 16,
/* key_rotation_enabled= */ true,
CryptoMode::kAesCbc));
std::string actual_ecm;
EXPECT_EQ(OK, wv_cas_ecm_.GenerateEcm(
/* even_key= */ kEvenKey,
/* even_content_iv= */
absl::StrCat(kEvenContentIv8Bytes, kEvenContentIv8Bytes),
/* odd_key= */ kOddKey,
/* odd_content_iv= */
absl::StrCat(kOddContentIv8Bytes, kOddContentIv8Bytes),
/* entitlement_key_id= */ kEntitlementKeyId,
/* entitlement_key= */ kEntitlementKey, &actual_ecm));
EXPECT_EQ(
"4ad40105c0656e745f6b65795f69642e2e2e2e2e2ea5693deeba52b4cb27e7021eefa2f8"
"c2b25f7d48e60627208f4ecca00703aa2467f28b214546a42320e3fa49f936369c657665"
"6e636f6e746576656e636f6e74656e745f6b65795f69642e2e2e2e2e2e0700509b67763b"
"3f1c356bc1e1dc8bac99a1e2f95c37d9183cbb96582f3a05fdbe29925c37c6c6a45eb552"
"b5ddf87f8a6f6464636f6e742e6f6464636f6e742e",
absl::BytesToHexString(actual_ecm));
}
TEST_F(WvCasEcmTest, GenerateSingleKeyEcm16BytesContentIvCbcSuccess) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 16,
/* key_rotation_enabled= */ false,
CryptoMode::kAesCbc));
std::string actual_ecm;
EXPECT_EQ(OK, wv_cas_ecm_.GenerateSingleKeyEcm(
/* even_key= */ kEvenKey,
/* even_content_iv= */
absl::StrCat(kEvenContentIv8Bytes, kEvenContentIv8Bytes),
/* entitlement_key_id= */ kEntitlementKeyId,
/* entitlement_key= */ kEntitlementKey, &actual_ecm));
EXPECT_EQ(
"4ad40104c0656e745f6b65795f69642e2e2e2e2e2ea5693deeba52b4cb27e7021eefa2f8"
"c2b25f7d48e60627208f4ecca00703aa2467f28b214546a42320e3fa49f936369c657665"
"6e636f6e746576656e636f6e74",
absl::BytesToHexString(actual_ecm));
}
TEST_F(WvCasEcmTest, GenerateEcm16BytesContentIvCsaSuccess) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 16,
/* key_rotation_enabled= */ true,
CryptoMode::kDvbCsa));
std::string actual_ecm;
EXPECT_EQ(OK, wv_cas_ecm_.GenerateEcm(
/* even_key= */ kEvenKey,
/* even_content_iv= */
absl::StrCat(kEvenContentIv8Bytes, kEvenContentIv8Bytes),
/* odd_key= */ kOddKey,
/* odd_content_iv= */
absl::StrCat(kOddContentIv8Bytes, kOddContentIv8Bytes),
/* entitlement_key_id= */ kEntitlementKeyId,
/* entitlement_key= */ kEntitlementKey, &actual_ecm));
EXPECT_EQ(
"4ad40107c0656e745f6b65795f69642e2e2e2e2e2ea5693deeba52b4cb27e7021eefa2f8"
"c2b25f7d48e60627208f4ecca00703aa2467f28b214546a42320e3fa49f936369c657665"
"6e636f6e746576656e636f6e74656e745f6b65795f69642e2e2e2e2e2e0700509b67763b"
"3f1c356bc1e1dc8bac99a1e2f95c37d9183cbb96582f3a05fdbe29925c37c6c6a45eb552"
"b5ddf87f8a6f6464636f6e742e6f6464636f6e742e",
absl::BytesToHexString(actual_ecm));
}
TEST_F(WvCasEcmTest, GenerateSingleKeyEcm16BytesContentIvCsaSuccess) {
EXPECT_EQ(OK, wv_cas_ecm_.Initialize(/* content_iv_size= */ 16,
/* key_rotation_enabled= */ false,
CryptoMode::kDvbCsa));
std::string actual_ecm;
EXPECT_EQ(OK, wv_cas_ecm_.GenerateSingleKeyEcm(
/* even_key= */ kEvenKey,
/* even_content_iv= */
absl::StrCat(kEvenContentIv8Bytes, kEvenContentIv8Bytes),
/* entitlement_key_id= */ kEntitlementKeyId,
/* entitlement_key= */ kEntitlementKey, &actual_ecm));
EXPECT_EQ(
"4ad40106c0656e745f6b65795f69642e2e2e2e2e2ea5693deeba52b4cb27e7021eefa2f8"
"c2b25f7d48e60627208f4ecca00703aa2467f28b214546a42320e3fa49f936369c657665"
"6e636f6e746576656e636f6e74",
absl::BytesToHexString(actual_ecm));
}
} // namespace cas
} // namespace widevine

32
media_cas_packager_sdk/public/wv_cas_status.cc → media_cas_packager_sdk/public/wv_cas_types.cc
View File

@@ -6,7 +6,7 @@
// widevine-licensing@google.com.
////////////////////////////////////////////////////////////////////////////////
#include "media_cas_packager_sdk/public/wv_cas_status.h"
#include "media_cas_packager_sdk/public/wv_cas_types.h"
#include "base/macros.h"
@@ -37,5 +37,35 @@ std::string GetWvCasStatusMessage(WvCasStatus status) {
return kWvCasStatusMessage[status];
}
std::string CryptoModeToString(CryptoMode mode) {
switch (mode) {
case CryptoMode::kAesCtr: {
return "kAesCtr";
}
case CryptoMode::kAesCbc: {
return "kAesCbc";
}
case CryptoMode::kDvbCsa: {
return "kDvbCsa";
}
default: {
return "kCryptoModeUnspecified";
}
}
}
CryptoMode StringToCryptoMode(std::string str) {
if (str == "kAesCtr") {
return CryptoMode::kAesCtr;
}
if (str == "kAesCbc") {
return CryptoMode::kAesCbc;
}
if (str == "kDvbCsa") {
return CryptoMode::kDvbCsa;
}
return CryptoMode::kCryptoModeUnspecified;
}
} // namespace cas
} // namespace widevine

18
media_cas_packager_sdk/public/wv_cas_status.h → media_cas_packager_sdk/public/wv_cas_types.h
View File

@@ -6,8 +6,8 @@
// widevine-licensing@google.com.
////////////////////////////////////////////////////////////////////////////////
#ifndef MEDIA_CAS_PACKAGER_SDK_PUBLIC_WV_CAS_STATUS_H_
#define MEDIA_CAS_PACKAGER_SDK_PUBLIC_WV_CAS_STATUS_H_
#ifndef MEDIA_CAS_PACKAGER_SDK_PUBLIC_WV_CAS_TYPES_H_
#define MEDIA_CAS_PACKAGER_SDK_PUBLIC_WV_CAS_TYPES_H_
#include <string>
@@ -50,7 +50,19 @@ enum WvCasStatus {
// Returns the message std::string for the given WvCasStatus.
std::string GetWvCasStatusMessage(WvCasStatus status);
// Crypto mode for encryption / decryption.
enum class CryptoMode : int {
kCryptoModeUnspecified = 0,
kAesCtr = 1,
kAesCbc = 2,
kDvbCsa = 3
};
std::string CryptoModeToString(CryptoMode mode);
CryptoMode StringToCryptoMode(std::string str);
} // namespace cas
} // namespace widevine
#endif // MEDIA_CAS_PACKAGER_SDK_PUBLIC_WV_CAS_STATUS_H_
#endif // MEDIA_CAS_PACKAGER_SDK_PUBLIC_WV_CAS_TYPES_H_

20
media_cas_packager_sdk/public/wv_cas_status_test.cc → media_cas_packager_sdk/public/wv_cas_types_test.cc
View File

@@ -6,14 +6,14 @@
// widevine-licensing@google.com.
////////////////////////////////////////////////////////////////////////////////
#include "media_cas_packager_sdk/public/wv_cas_status.h"
#include "media_cas_packager_sdk/public/wv_cas_types.h"
#include "testing/gunit.h"
namespace widevine {
namespace cas {
TEST(WvCasStatusTest, GetWvCasStatusMessage) {
TEST(WvCasTypesTest, GetWvCasStatusMessage) {
EXPECT_EQ("OK", GetWvCasStatusMessage(OK));
EXPECT_EQ("Invalid argument", GetWvCasStatusMessage(INVALID_ARGUMENT));
EXPECT_EQ("Not found", GetWvCasStatusMessage(NOT_FOUND));
@@ -24,5 +24,21 @@ TEST(WvCasStatusTest, GetWvCasStatusMessage) {
EXPECT_EQ("Unavailable", GetWvCasStatusMessage(UNAVAILABLE));
}
TEST(WvCasTypesTest, CryptoModeToString) {
EXPECT_EQ("kAesCtr", CryptoModeToString(CryptoMode::kAesCtr));
EXPECT_EQ("kAesCbc", CryptoModeToString(CryptoMode::kAesCbc));
EXPECT_EQ("kDvbCsa", CryptoModeToString(CryptoMode::kDvbCsa));
EXPECT_EQ("kCryptoModeUnspecified",
CryptoModeToString(CryptoMode::kCryptoModeUnspecified));
}
TEST(WvCasTypesTest, StringToCryptoMode) {
EXPECT_EQ(CryptoMode::kAesCtr, StringToCryptoMode("kAesCtr"));
EXPECT_EQ(CryptoMode::kAesCbc, StringToCryptoMode("kAesCbc"));
EXPECT_EQ(CryptoMode::kDvbCsa, StringToCryptoMode("kDvbCsa"));
EXPECT_EQ(CryptoMode::kCryptoModeUnspecified,
StringToCryptoMode("wrong crypto mode"));
}
} // namespace cas
} // namespace widevine