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Update includes and BUILD

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This commit is contained in:
Lu Chen
2020-02-05 11:21:51 -08:00
parent 5c42bf9b7f
commit ac564bb46f
50 changed files with 510 additions and 377 deletions
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32
common/rot_id_util.h
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@@ -21,15 +21,6 @@
namespace widevine {
// Helper function that compares the |rot_id_hash| to a hash of each of the
// |revoked_ids|. The |revoked_ids| are the unique id hash (aka inner hash)
// values as defined in the spec at go/wv-kb-id. The |encrypted_unique_id| and
// |system_id| are used to compute the hash of each of the |revoked_ids|.
// Returns true if any of the revoked_ids match.
bool IsRotIdRevoked(const std::string& encrypted_unique_id, uint32_t system_id,
const std::string& rot_id_hash,
const std::vector<std::string>& revoked_ids);
// Helper function that generates the hash for the ROT id from the
// |unique_id_hash|, the |system_id| and the |salt|. |salt| is typically an
// encrypted unique id. Since we use an ephemeral eliptic curve key as part of
@@ -41,5 +32,28 @@ bool IsRotIdRevoked(const std::string& encrypted_unique_id, uint32_t system_id,
std::string GenerateRotIdHash(const std::string& salt, uint32_t system_id,
const std::string& unique_id_hash);
// Helper function that compares the |rot_id_hash| to a hash of each of the
// |revoked_ids|. The |revoked_ids| are the unique id hash (aka inner hash)
// values as defined in the spec at go/wv-kb-id. The |encrypted_unique_id| and
// |system_id| are used to compute the hash of each of the |revoked_ids|.
// Returns true if any of the revoked_ids match.
template <typename V>
bool IsRotIdRevoked(const std::string& encrypted_unique_id, uint32_t system_id,
const std::string& rot_id_hash, const V& revoked_ids) {
// This could conceivably happen for legacy DRM certificates without a ROT id.
// No need to match if there's nothing to match against.
if (encrypted_unique_id.empty() || rot_id_hash.empty()) {
return false;
}
for (const auto& revoked_id : revoked_ids) {
if (GenerateRotIdHash(encrypted_unique_id, system_id, revoked_id) ==
rot_id_hash) {
return true;
}
}
return false;
}
} // namespace widevine
#endif // COMMON_ROT_ID_UTIL_H_