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Don't cast the potential problems away, handle them appropriately

This commit is contained in:
Steffen Jaeckel 2015-11-12 01:18:00 +01:00
parent 5bed36d997
commit 1c1baaa755
7 changed files with 21 additions and 9 deletions
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4
bn_mp_div.c
View File

@ -270,7 +270,9 @@ int mp_div (mp_int * a, mp_int * b, mp_int * c, mp_int * d)
}
if (d != NULL) {
(void)mp_div_2d (&x, norm, &x, NULL);
if ((res = mp_div_2d (&x, norm, &x, NULL)) != MP_OKAY) {
goto LBL_Y;
}
mp_exch (&x, d);
}

4
bn_mp_dr_reduce.c
View File

@ -82,7 +82,9 @@ top:
* Each successive "recursion" makes the input smaller and smaller.
*/
if (mp_cmp_mag (x, n) != MP_LT) {
(void)s_mp_sub(x, n, x);
if ((err = s_mp_sub(x, n, x)) != MP_OKAY) {
return err;
}
goto top;
}
return MP_OKAY;

6
bn_mp_exteuclid.c
View File

@ -61,9 +61,9 @@ int mp_exteuclid(mp_int *a, mp_int *b, mp_int *U1, mp_int *U2, mp_int *U3)
/* make sure U3 >= 0 */
if (u3.sign == MP_NEG) {
(void)mp_neg(&u1, &u1);
(void)mp_neg(&u2, &u2);
(void)mp_neg(&u3, &u3);
if ((err = mp_neg(&u1, &u1)) != MP_OKAY) { goto _ERR; }
if ((err = mp_neg(&u2, &u2)) != MP_OKAY) { goto _ERR; }
if ((err = mp_neg(&u3, &u3)) != MP_OKAY) { goto _ERR; }
}
/* copy result out */

4
bn_mp_reduce_2k.c
View File

@ -45,7 +45,9 @@ top:
}
if (mp_cmp_mag(a, n) != MP_LT) {
(void)s_mp_sub(a, n, a);
if ((res = s_mp_sub(a, n, a)) != MP_OKAY) {
goto ERR;
}
goto top;
}

4
bn_mp_reduce_2k_l.c
View File

@ -46,7 +46,9 @@ top:
}
if (mp_cmp_mag(a, n) != MP_LT) {
(void)s_mp_sub(a, n, a);
if ((res = s_mp_sub(a, n, a)) != MP_OKAY) {
goto ERR;
}
goto top;
}

4
bn_mp_toom_mul.c
View File

@ -46,7 +46,9 @@ int mp_toom_mul(mp_int *a, mp_int *b, mp_int *c)
goto ERR;
}
mp_rshd(&a1, B);
(void)mp_mod_2d(&a1, DIGIT_BIT * B, &a1);
if ((res = mp_mod_2d(&a1, DIGIT_BIT * B, &a1)) != MP_OKAY) {
goto ERR;
}
if ((res = mp_copy(a, &a2)) != MP_OKAY) {
goto ERR;

4
bn_mp_toom_sqr.c
View File

@ -39,7 +39,9 @@ mp_toom_sqr(mp_int *a, mp_int *b)
goto ERR;
}
mp_rshd(&a1, B);
(void)mp_mod_2d(&a1, DIGIT_BIT * B, &a1);
if ((res = mp_mod_2d(&a1, DIGIT_BIT * B, &a1)) != MP_OKAY) {
goto ERR;
}
if ((res = mp_copy(a, &a2)) != MP_OKAY) {
goto ERR;