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Clear MP in ECC to free allocated memory

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This commit is contained in:
Sean Parkinson
2020-08-19 08:41:36 +10:00
committed by John Safranek
parent 113753370d
commit 38b717eb42
1 changed files with 17 additions and 16 deletions
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33
wolfcrypt/src/ecc.c
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@@ -2811,25 +2811,26 @@ static int ecc_point_to_mont(ecc_point* p, ecc_point* r, mp_int* modulus,
err = mp_init(mu); err = mp_init(mu);
if (err == MP_OKAY) { if (err == MP_OKAY) {
err = mp_montgomery_calc_normalization(mu, modulus); err = mp_montgomery_calc_normalization(mu, modulus);
}
if (err == MP_OKAY) { if (err == MP_OKAY) {
if (mp_cmp_d(mu, 1) == MP_EQ) { if (mp_cmp_d(mu, 1) == MP_EQ) {
err = mp_copy(p->x, r->x); err = mp_copy(p->x, r->x);
if (err == MP_OKAY) if (err == MP_OKAY)
err = mp_copy(p->y, r->y); err = mp_copy(p->y, r->y);
if (err == MP_OKAY) if (err == MP_OKAY)
err = mp_copy(p->z, r->z); err = mp_copy(p->z, r->z);
}
else {
err = mp_mulmod(p->x, mu, modulus, r->x);
if (err == MP_OKAY)
err = mp_mulmod(p->y, mu, modulus, r->y);
if (err == MP_OKAY)
err = mp_mulmod(p->z, mu, modulus, r->z);
}
} }
else {
err = mp_mulmod(p->x, mu, modulus, r->x);
if (err == MP_OKAY)
err = mp_mulmod(p->y, mu, modulus, r->y);
if (err == MP_OKAY)
err = mp_mulmod(p->z, mu, modulus, r->z);
}
}
mp_clear(mu);
}
#ifdef WOLFSSL_SMALL_STACK #ifdef WOLFSSL_SMALL_STACK
if (mu != NULL) if (mu != NULL)
XFREE(mu, heap, DYNAMIC_TYPE_ECC); XFREE(mu, heap, DYNAMIC_TYPE_ECC);