Export media_cas_packager_sdk

common/verified_media_pipeline.cc

@@ -0,0 +1,45 @@
+////////////////////////////////////////////////////////////////////////////////
+// Copyright 2017 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 verifying VMP (Verified Media Pipeline) data.
+
+#include "common/verified_media_pipeline.h"
+
+#include "common/vmp_checker.h"
+
+namespace widevine {
+util::Status VerifyVmpData(
+    const std::string& vmp_data,
+    PlatformVerificationStatus* platform_verification_status) {
+  *platform_verification_status = PLATFORM_UNVERIFIED;
+  VmpChecker::Result vmp_result;
+  util::Status status =
+      VmpChecker::Instance()->VerifyVmpData(vmp_data, &vmp_result);
+  if (status.ok()) {
+    switch (vmp_result) {
+      case VmpChecker::kUnverified:
+        *platform_verification_status = PLATFORM_UNVERIFIED;
+        break;
+      case VmpChecker::kVerified:
+        *platform_verification_status = PLATFORM_SOFTWARE_VERIFIED;
+        break;
+      case VmpChecker::kSecureStorageVerified:
+        *platform_verification_status =
+            PLATFORM_SECURE_STORAGE_SOFTWARE_VERIFIED;
+        break;
+      case VmpChecker::kTampered:
+        *platform_verification_status = PLATFORM_TAMPERED;
+        break;
+    }
+  } else {
+    *platform_verification_status = PLATFORM_TAMPERED;
+  }
+  return status;
+}
+}  // namespace widevine