| 6d914f61 | 17-Jul-2015 |
Pascal Brand <pascal.brand@st.com> |
ECC: optimize the pool of temporary variables
ECC is using a lot (80) temporary variables. These variables
are taken from a static pool, each being of the maximum key size
supported in OP-TEE: 4096b
ECC: optimize the pool of temporary variables
ECC is using a lot (80) temporary variables. These variables
are taken from a static pool, each being of the maximum key size
supported in OP-TEE: 4096bits, times 2 to include
wrapping multiplication in temporary computation.
With the introduction of being able to get temporary variables
of a given size, the current patch optimize the use of the variables
in case of ECC.
Thanks to this patch, the number of temporary variables is back to 50,
and the emulated esram size (QEMU / FVP / HiKey) is back to 200KB.
Note that further optimization can be performed, for ECC and also
for other algorithms (RSA,...).
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Tested-by: Pascal Brand <pascal.brand@linaro.org> (QEMU platform)
Signed-off-by: Pascal Brand <pascal.brand@st.com>
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