Tee-dev February 2021

tee-dev@lists.linaro.org

3 participants
3 discussions

[RESEND PATCH v1] firmware: tee_bnxt: Use UUID API for exporting the UUID

by Andy Shevchenko

There is export_uuid() function which exports uuid_t to the u8 array. Use it instead of open coding variant. This allows to hide the uuid_t internals. Signed-off-by: Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> --- drivers/firmware/broadcom/tee_bnxt_fw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/broadcom/tee_bnxt_fw.c b/drivers/firmware/broadcom/tee_bnxt_fw.c index ed10da5313e8..4cf0c2576037 100644 --- a/drivers/firmware/broadcom/tee_bnxt_fw.c +++ b/drivers/firmware/broadcom/tee_bnxt_fw.c @@ -197,7 +197,7 @@ static int tee_bnxt_fw_probe(struct device *dev) return -ENODEV; /* Open session with Bnxt load Trusted App */ - memcpy(sess_arg.uuid, bnxt_device->id.uuid.b, TEE_IOCTL_UUID_LEN); + export_uuid(sess_arg.uuid, &bnxt_device->id.uuid); sess_arg.clnt_login = TEE_IOCTL_LOGIN_PUBLIC; sess_arg.num_params = 0; -- 2.29.2

2 years, 4 months

OpenVPN hardening with OP-TEE

by Kris Kwiatkowski

Hello, I've recently been involved in producing PoC, which utilizes OP-TEE to produce proof of a secret key possession. That is used during tunnel establishment by OpenVPN. In case someone finds it interesting, for example as kind of "real-world" use case of OP-TEE, then details are described here: https://www.amongbytes.com/post/20210112-optee-openssl-engine/ and code is here: https://github.com/henrydcase/optee_eng The actual PoC used post-quantum schemes integrated into TEE OS and TF-A (secure boot). Those two points are not described really described for brevity (and probably there is low interest anyway). Kind regards, Kris

3 years, 2 months

Optee: out of memory failures in due to tee_shm_free()

by Allen Pais

Hi, I have been seeing out of memory failures due to tee_shm_free() on kexec path. This issue in discussed in length at: link: https://github.com/OP-TEE/optee_os/issues/3637 Driver: drivers/firmware/broadcom/tee_bnxt_fw.c I have tried various experiments to try and debug this issue but haven't found a fix. All I have manged is to delay the occurrence of the issue. Any pointers would be helpful. Thanks, - Allen

3 years, 2 months

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Tee-dev February 2021