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integer comba array sanity check

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toddouska
2012-06-01 14:49:07 -07:00
parent 32fc5daf43
commit 217053a780
1 changed files with 8 additions and 0 deletions
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8
ctaocrypt/src/integer.c
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@@ -2762,6 +2762,9 @@ int fast_s_mp_sqr (mp_int * a, mp_int * b)
} }
} }
if (pa > MP_WARRAY)
return MP_RANGE; /* TAO range check */
#ifdef CYASSL_SMALL_STACK #ifdef CYASSL_SMALL_STACK
W = (mp_digit*)XMALLOC(sizeof(mp_digit) * MP_WARRAY, 0, DYNAMIC_TYPE_BIGINT); W = (mp_digit*)XMALLOC(sizeof(mp_digit) * MP_WARRAY, 0, DYNAMIC_TYPE_BIGINT);
if (W == NULL) if (W == NULL)
@@ -2878,6 +2881,8 @@ int fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
/* number of output digits to produce */ /* number of output digits to produce */
pa = MIN(digs, a->used + b->used); pa = MIN(digs, a->used + b->used);
if (pa > MP_WARRAY)
return MP_RANGE; /* TAO range check */
#ifdef CYASSL_SMALL_STACK #ifdef CYASSL_SMALL_STACK
W = (mp_digit*)XMALLOC(sizeof(mp_digit) * MP_WARRAY, 0, DYNAMIC_TYPE_BIGINT); W = (mp_digit*)XMALLOC(sizeof(mp_digit) * MP_WARRAY, 0, DYNAMIC_TYPE_BIGINT);
@@ -3598,6 +3603,9 @@ int fast_s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs)
} }
} }
if (pa > MP_WARRAY)
return MP_RANGE; /* TAO range check */
#ifdef CYASSL_SMALL_STACK #ifdef CYASSL_SMALL_STACK
W = (mp_digit*)XMALLOC(sizeof(mp_digit) * MP_WARRAY, 0, DYNAMIC_TYPE_BIGINT); W = (mp_digit*)XMALLOC(sizeof(mp_digit) * MP_WARRAY, 0, DYNAMIC_TYPE_BIGINT);
if (W == NULL) if (W == NULL)