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tls: P256: do not open-code copying of struct variables

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2021-11-27 18:42:27 +01:00
parent dcfd8d3d10
commit 9c671fe3dd
1 changed files with 3 additions and 1 deletions
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4
networking/tls_sp_c32.c
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@ -865,6 +865,8 @@ static int sp_256_mul_add_8(sp_digit* r /*, const sp_digit* a, sp_digit b*/)
} }
/* Reduce the number back to 256 bits using Montgomery reduction. /* Reduce the number back to 256 bits using Montgomery reduction.
* Note: the result is NOT guaranteed to be less than p256_mod!
* (it is only guaranteed to fit into 256 bits).
* *
* a Double-wide number to reduce in place. * a Double-wide number to reduce in place.
* m The single precision number representing the modulus. * m The single precision number representing the modulus.
@ -1276,7 +1278,7 @@ static void sp_256_ecc_mulmod_8(sp_point* r, const sp_point* g, const sp_digit*
if (map) if (map)
sp_256_map_8(r, &t[0]); sp_256_map_8(r, &t[0]);
else else
memcpy(r, &t[0], sizeof(sp_point)); *r = t[0]; /* struct copy */
memset(t, 0, sizeof(t)); //paranoia memset(t, 0, sizeof(t)); //paranoia
} }