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

OEMCrypto Query Key Control Block

Browse Source 
Merge from Widevine repo http://go/wvgerrit/13818

This CL adds the ability to query OEMCrypto about the key control
block and duration of a key that has been loaded.  There are unit
tests and implementation in the level 3 and reference implementation.

b/18503541

Change-Id: I8e40d90a3c64c1ce030af6fef9e98c8eac0df1a5
This commit is contained in:
Fred Gylys-Colwell
2015-03-30 15:38:52 -07:00
parent 10cc0a5ddb
commit 582eb32661
5 changed files with 115 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
libwvdrmengine/oemcrypto/mock/src/oemcrypto_mock.cpp
View File

@@ -451,6 +451,43 @@ OEMCryptoResult OEMCrypto_RefreshKeys(
return OEMCrypto_SUCCESS;
}
extern "C" OEMCryptoResult OEMCrypto_QueryKeyControl(
OEMCrypto_SESSION session, const uint8_t* key_id, size_t key_id_length,
uint8_t* key_control_block, size_t* key_control_block_length) {
if (LogCategoryEnabled(kLoggingTraceOEMCryptoCalls)) {
LOGI("-- OEMCryptoResult OEMCrypto_QueryKeyControl"
"(const OEMCrypto_SESSION session)\n");
if (wvcdm::g_cutoff >= wvcdm::LOG_VERBOSE) {
dump_hex("key_id", key_id, key_id_length);
}
}
uint32_t* block = reinterpret_cast<uint32_t*>(key_control_block);
if ((key_control_block_length == NULL)
|| (*key_control_block_length < wvcdm::KEY_CONTROL_SIZE)) {
LOGE("[OEMCrypto_QueryKeyControl(): OEMCrypto_ERROR_SHORT_BUFFER]");
return OEMCrypto_ERROR_SHORT_BUFFER;
}
*key_control_block_length = wvcdm::KEY_CONTROL_SIZE;
if (key_id == NULL) {
LOGE("[OEMCrypto_QueryKeyControl(): key_id null. "
"OEMCrypto_ERROR_UNKNOWN_FAILURE]");
return OEMCrypto_ERROR_UNKNOWN_FAILURE;
}
SessionContext* session_ctx = crypto_engine->FindSession(session);
if (!session_ctx || !session_ctx->isValid()) {
LOGE("[OEMCrypto_QueryKeyControl(): ERROR_INVALID_SESSION]");
return OEMCrypto_ERROR_INVALID_SESSION;
}
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)) {
LOGE("[OEMCrypto_QueryKeyControl(): FAIL]");
return OEMCrypto_ERROR_NO_CONTENT_KEY;
}
return OEMCrypto_SUCCESS;
}
extern "C"
OEMCryptoResult OEMCrypto_SelectKey(const OEMCrypto_SESSION session,
const uint8_t* key_id,