首先確定寫入key，操作如下：
檢查 /persist/data/sfs 目錄下是否有key文件存在 adb shell ls -la /persist/data/sfs
做過key provision的機器重新寫key，參照如下步驟： 1）燒userdebug版本，重新寫key需要在userdebug版本上才能做 2）執行下面命令擦除rpmb分區 MODEL1:/ # qseecom_sample_client v smplap64 15 1 Note: Command line arguments do not belong to legacy test --------------------------------------------------------------- WARNING!!! You are about to erase the entire RPMB partition. ---------------------------------------------------------------- Do you want to proceed (y/n)? y RPMB partition erase completed
3）重啟機器，檢查機器處於lock狀態和rpmb key已經provision adb reboot bootloader 執行下面命令查看locked狀態 fastboot oem lock (bootloader) Device already : locked! OKAY [ 0.006s] Finished. Total time: 0.007s
執行下面命令，若返回-1表示已經provision過rpmb key MODEL1:/ # qseecom_sample_client v smplap64 14 1 Note: Command line arguments do not belong to legacy test ------------------------------------------------------- WARNING!!! You are about to provision the RPMB key. This is a ONE time operation and CANNOT be reversed. ------------------------------------------------------- 0 -> Provision Production key 1 -> Provision Test key 2 -> Check RPMB key provision status ------------------------------------------------------- Select an option to proceed: 1 RPMB key provisioning failed (-1)
4） 后面就可以進行attestation key provison了 adb push keybox.xml /data/local/tmp adb shell LD_LIBRARY_PATH=/vendor/lib64/hw KmInstallKeybox /data/local/tmp/keybox.xml your_key_file_product_id true 5）在user版本上測試時注意不要刷persist image，因為attestation key是寫在persist分區的。
widevine要用到的話，也得先合入。可以參考 kba-160918225319_3_how_to_integrate_widevine_on_android.pdf，Integrate Widevine - GMS Help.pdf等文檔。
然后，絕大部分問題都是高通的問題……很多都是閉源的，無能為力。