Searched hist:a8778185d2fd2b80cee8af7879ecb92be1aa3898 (Results 1 – 2 of 2) sorted by relevance
| /rk3399_ARM-atf/plat/arm/board/tc/ |
| H A D | plat_tc_mbedtls_config.h | a8778185d2fd2b80cee8af7879ecb92be1aa3898 Wed Oct 18 13:11:45 UTC 2023 Manish V Badarkhe <Manish.Badarkhe@arm.com> feat(tc): provide a mock mbedtls-random generation function
Simulated the utilization of an external RNG through the
MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG configuration option in mbedTLS.
Consequently, an implementation of mbedtls_psa_external_get_random()
is provided. Given the absence of actual external RNG support,
we provide a mock implementation by utilizing the system counter to
fill the the buffer to provide a random number, specifically tailored
for the use exclusively within the TF-M testsuite.
While this method is not ideal for generating random numbers,
alternatives like the 'rand' library function are not feasible due to
lack of support in TF-A. Additionally, the architectural 'rand'
instruction is not viable, as it is only supported for platforms with
Armv8.5-a+ architecture as an optional feature.
mbedtls_psa_external_get_random() function comes into play during the
exportation of the public portion of the delegated attestation key.
This helps in using mbedTLS-3.4.1 for running the delegated attestation
tests on TC platform.
Change-Id: Ifcf4e3231aad93595e00c353a4b0c606c0ef9fc2
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
|
| H A D | tc_bl31_setup.c | a8778185d2fd2b80cee8af7879ecb92be1aa3898 Wed Oct 18 13:11:45 UTC 2023 Manish V Badarkhe <Manish.Badarkhe@arm.com> feat(tc): provide a mock mbedtls-random generation function
Simulated the utilization of an external RNG through the
MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG configuration option in mbedTLS.
Consequently, an implementation of mbedtls_psa_external_get_random()
is provided. Given the absence of actual external RNG support,
we provide a mock implementation by utilizing the system counter to
fill the the buffer to provide a random number, specifically tailored
for the use exclusively within the TF-M testsuite.
While this method is not ideal for generating random numbers,
alternatives like the 'rand' library function are not feasible due to
lack of support in TF-A. Additionally, the architectural 'rand'
instruction is not viable, as it is only supported for platforms with
Armv8.5-a+ architecture as an optional feature.
mbedtls_psa_external_get_random() function comes into play during the
exportation of the public portion of the delegated attestation key.
This helps in using mbedTLS-3.4.1 for running the delegated attestation
tests on TC platform.
Change-Id: Ifcf4e3231aad93595e00c353a4b0c606c0ef9fc2
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
|