Initial import of Widevine Common Encryption DRM engine

Builds libwvmdrmengine.so, which is loaded by the new MediaDrm APIs to support playback of Widevine/CENC protected content. Change-Id: I6f57dd37083dfd96c402cb9dd137c7d74edc8f1c
2013-03-21 17:39:02 -07:00
parent 38334efbe7
commit 1a8aa0dd05
211 changed files with 51913 additions and 144 deletions
--- a/libwvdrmengine/level3/arm/l3crypto_keybox_mock.cpp
+++ b/libwvdrmengine/level3/arm/l3crypto_keybox_mock.cpp
@@ -0,0 +1,109 @@
+/*******************************************************************************
+ *
+ * Copyright 2013 Google Inc. All Rights Reserved.
+ *
+ * mock implementation of OEMCrypto APIs
+ *
+ ******************************************************************************/
+
+#include "l3crypto_keybox_mock.h"
+#include <arpa/inet.h>  // TODO(fredgc): Add ntoh to wv_cdm_utilities.h
+#include <string>
+#include <cstring>
+#include <sys/types.h>
+#include "log.h"
+#include "wvcrc32.h"
+#include "wv_keybox.h"
+
+namespace wvoec_obfs {
+
+const WidevineKeybox kDefaultKeybox = {
+  // Sample keybox used for test vectors
+  {
+    // deviceID
+    0x54, 0x65, 0x73, 0x74, 0x4b, 0x65, 0x79, 0x30, // TestKey01
+    0x31, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ........
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ........
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // ........
+  }, {
+    // key
+    0xfb, 0xda, 0x04, 0x89, 0xa1, 0x58, 0x16, 0x0e,
+    0xa4, 0x02, 0xe9, 0x29, 0xe3, 0xb6, 0x8f, 0x04,
+  }, {
+    // data
+    0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x10, 0x19,
+    0x07, 0xd9, 0xff, 0xde, 0x13, 0xaa, 0x95, 0xc1,
+    0x22, 0x67, 0x80, 0x53, 0x36, 0x21, 0x36, 0xbd,
+    0xf8, 0x40, 0x8f, 0x82, 0x76, 0xe4, 0xc2, 0xd8,
+    0x7e, 0xc5, 0x2b, 0x61, 0xaa, 0x1b, 0x9f, 0x64,
+    0x6e, 0x58, 0x73, 0x49, 0x30, 0xac, 0xeb, 0xe8,
+    0x99, 0xb3, 0xe4, 0x64, 0x18, 0x9a, 0x14, 0xa8,
+    0x72, 0x02, 0xfb, 0x02, 0x57, 0x4e, 0x70, 0x64,
+    0x0b, 0xd2, 0x2e, 0xf4, 0x4b, 0x2d, 0x7e, 0x39,
+  }, {
+    // magic
+    0x6b, 0x62, 0x6f, 0x78,
+  }, {
+    // Crc
+    0x0a, 0x7a, 0x2c, 0x35,
+  }
+};
+
+WvKeybox::WvKeybox() : valid_(false) {
+  Prepare();
+}
+
+bool WvKeybox::Prepare() {
+  InstallKeybox(reinterpret_cast<const uint8_t*>(&kDefaultKeybox),
+                sizeof(kDefaultKeybox));
+  valid_ = true;
+  return valid_;
+}
+
+KeyboxError WvKeybox::Validate() {
+  if (!valid_) {
+    LOGE("[KEYBOX NOT LOADED]");
+    return OTHER_ERROR;
+  }
+  if (strncmp(reinterpret_cast<char*>(magic_), "kbox", 4) != 0) {
+    LOGE("[KEYBOX HAS BAD MAGIC]");
+    return BAD_MAGIC;
+  }
+  uint32_t crc_computed;
+  uint32_t* crc_stored = (uint32_t*)crc_;
+  WidevineKeybox keybox;
+  memset(&keybox, 0, sizeof(keybox));
+  memcpy(keybox.device_id_, &device_id_[0], device_id_.size());
+  memcpy(keybox.device_key_, &device_key_.value()[0], sizeof(keybox.device_key_));
+  memcpy(keybox.data_, key_data_, sizeof(keybox.data_));
+  memcpy(keybox.magic_, magic_, sizeof(keybox.magic_));
+
+  crc_computed = ntohl(wvcrc32(reinterpret_cast<uint8_t*>(&keybox),
+                               sizeof(keybox) - 4)); // Don't include last 4 bytes.
+  if (crc_computed != *crc_stored) {
+    LOGE("[KEYBOX CRC problem: computed = %08x,  stored = %08x]\n",
+         crc_computed, *crc_stored);
+    return BAD_CRC;
+  }
+  return NO_ERROR;
+}
+
+bool WvKeybox::InstallKeybox(const uint8_t* buffer, size_t keyBoxLength) {
+  if (keyBoxLength != 128) {
+    return false;
+  }
+
+  const WidevineKeybox* keybox
+    = reinterpret_cast<const WidevineKeybox*>(buffer);
+  device_id_.assign(keybox->device_id_,
+                    keybox->device_id_ + sizeof(keybox->device_id_));
+  device_key_.setValue(reinterpret_cast<const char*>(keybox->device_key_),
+                       sizeof(keybox->device_key_));
+  device_key_.setType(KEYTYPE_DEVICE);
+  memcpy(key_data_, keybox->data_, sizeof(keybox->data_));
+  memcpy(magic_, keybox->magic_, sizeof(keybox->magic_));
+  memcpy(crc_, keybox->crc_, sizeof(keybox->crc_));
+  return true;
+}
+
+}; // namespace wvoec_eng