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Maths: mp_mod_2d supports negative value now

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SRP: don't clear an mp_int that hasn't been initialized
This commit is contained in:
Sean Parkinson
2021-07-19 15:26:50 +10:00
parent bbe47a81b7
commit ed6e173fc3
5 changed files with 102 additions and 23 deletions
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wolfcrypt/test/test.c
+24
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@@ -35558,6 +35558,30 @@ static int mp_test_mod_2d(mp_int* a, mp_int* r, mp_int* t, WC_RNG* rng)
}
}
#if !defined(WOLFSSL_SP_MATH) || defined(WOLFSSL_SP_INT_NEGATIVE)
/* Test negative value being moded. */
for (j = 0; j < 20; j++) {
ret = randNum(a, 2, rng, NULL);
if (ret != 0)
return -13122;
a->sign = MP_NEG;
for (i = 1; i < DIGIT_BIT * 3 + 1; i++) {
ret = mp_mod_2d(a, i, r);
if (ret != 0)
return -13124;
mp_zero(t);
ret = mp_set_bit(t, i);
if (ret != 0)
return -13125;
ret = mp_mod(a, t, t);
if (ret != 0)
return -13126;
if (mp_cmp(r, t) != MP_EQ)
return -13127;
}
}
#endif
return 0;
}
#endif