diff options
Diffstat (limited to 'cryptfs_hw.cpp')
| -rw-r--r-- | cryptfs_hw.cpp | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/cryptfs_hw.cpp b/cryptfs_hw.cpp index 6cd634d..c1d42c9 100644 --- a/cryptfs_hw.cpp +++ b/cryptfs_hw.cpp @@ -26,6 +26,8 @@ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#define LOG_TAG "Cryptfs_hw" + #include <stdlib.h> #include <string.h> #include <sys/types.h> @@ -34,8 +36,10 @@ #include <errno.h> #include "cutils/log.h" #include "cutils/properties.h" +#include <hardware/hardware.h> +#include <hardware/keymaster_common.h> #include "cryptfs_hw.h" -#include "CryptfsHw.h" +#include <vendor/qti/hardware/cryptfshw/1.0/ICryptfsHw.h> using android::sp; using vendor::qti::hardware::cryptfshw::V1_0::ICryptfsHw; @@ -124,3 +128,29 @@ int clear_hw_device_encryption_key() return rc; } +static int get_keymaster_version() +{ + int rc = -1; + const hw_module_t* mod; + rc = hw_get_module_by_class(KEYSTORE_HARDWARE_MODULE_ID, NULL, &mod); + if (rc) { + ALOGE("could not find any keystore module"); + return rc; + } + return mod->module_api_version; +} + +int should_use_keymaster() +{ + /* + * HW FDE key should be tied to keymaster + * if version is above 0.3. this is to + * support msm8909 go target. + */ + int rc = 1; + if (get_keymaster_version() == KEYMASTER_MODULE_API_VERSION_0_3) { + ALOGI("Keymaster version is 0.3"); + rc = 0; + } + return rc; +} |