Gilles Peskine 67986d0613 mbedtls_ecp_gen_privkey_mx: make bit manipulations unconditional
Don't calculate the bit-size of the initially generated random number.
This is not necessary to reach the desired distribution of private
keys, and creates a (tiny) side channel opportunity.

This changes the way the result is derived from the random number, but
does not affect the resulting distribution.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
2021-06-03 18:10:04 +02:00
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