diff options
Diffstat (limited to 'crypto/bn')
-rw-r--r-- | crypto/bn/bn_div.c | 8 | ||||
-rw-r--r-- | crypto/bn/bn_mont.c | 6 | ||||
-rw-r--r-- | crypto/bn/bn_mul.c | 14 |
3 files changed, 14 insertions, 14 deletions
diff --git a/crypto/bn/bn_div.c b/crypto/bn/bn_div.c index ac1a09615a..f9a095e3b3 100644 --- a/crypto/bn/bn_div.c +++ b/crypto/bn/bn_div.c @@ -200,10 +200,10 @@ int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor, /* First we normalise the numbers */ norm_shift=BN_BITS2-((BN_num_bits(divisor))%BN_BITS2); - BN_lshift(sdiv,divisor,norm_shift); + if (!(BN_lshift(sdiv,divisor,norm_shift))) goto err; sdiv->neg=0; norm_shift+=BN_BITS2; - BN_lshift(snum,num,norm_shift); + if (!(BN_lshift(snum,num,norm_shift))) goto err; snum->neg=0; div_n=sdiv->top; num_n=snum->top; @@ -327,7 +327,7 @@ int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor, tmp->top=j; j=wnum.top; - BN_sub(&wnum,&wnum,tmp); + if (!BN_sub(&wnum,&wnum,tmp)) goto err; snum->top=snum->top+wnum.top-j; @@ -335,7 +335,7 @@ int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor, { q--; j=wnum.top; - BN_add(&wnum,&wnum,sdiv); + if (!BN_add(&wnum,&wnum,sdiv)) goto err; snum->top+=wnum.top-j; } *(resp--)=q; diff --git a/crypto/bn/bn_mont.c b/crypto/bn/bn_mont.c index 82942a4759..c9ebdbaabe 100644 --- a/crypto/bn/bn_mont.c +++ b/crypto/bn/bn_mont.c @@ -221,7 +221,7 @@ int BN_from_montgomery(BIGNUM *ret, const BIGNUM *a, BN_MONT_CTX *mont, if (!BN_mul(t1,t2,&mont->N,ctx)) goto err; if (!BN_add(t2,a,t1)) goto err; - BN_rshift(ret,t2,mont->ri); + if (!BN_rshift(ret,t2,mont->ri)) goto err; #endif /* MONT_WORD */ if (BN_ucmp(ret, &(mont->N)) >= 0) @@ -282,8 +282,8 @@ int BN_MONT_CTX_set(BN_MONT_CTX *mont, const BIGNUM *mod, BN_CTX *ctx) BN_ULONG buf[2]; mont->ri=(BN_num_bits(mod)+(BN_BITS2-1))/BN_BITS2*BN_BITS2; - BN_zero(R); - BN_set_bit(R,BN_BITS2); /* R */ + if (!(BN_zero(R))) goto err; + if (!(BN_set_bit(R,BN_BITS2))) goto err; /* R */ buf[0]=mod->d[0]; /* tmod = N mod word size */ buf[1]=0; diff --git a/crypto/bn/bn_mul.c b/crypto/bn/bn_mul.c index 7bffc9c16a..fd598b8b3d 100644 --- a/crypto/bn/bn_mul.c +++ b/crypto/bn/bn_mul.c @@ -964,7 +964,7 @@ int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) if ((al == 0) || (bl == 0)) { - BN_zero(r); + if (!BN_zero(r)) goto err; return(1); } top=al+bl; @@ -1044,7 +1044,7 @@ int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) if (i == 1 && !BN_get_flags(b,BN_FLG_STATIC_DATA)) { BIGNUM *tmp_bn = (BIGNUM *)b; - bn_wexpand(tmp_bn,al); + if (bn_wexpand(tmp_bn,al) == NULL) goto err; tmp_bn->d[bl]=0; bl++; i--; @@ -1052,7 +1052,7 @@ int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) else if (i == -1 && !BN_get_flags(a,BN_FLG_STATIC_DATA)) { BIGNUM *tmp_bn = (BIGNUM *)a; - bn_wexpand(tmp_bn,bl); + if (bn_wexpand(tmp_bn,bl) == NULL) goto err; tmp_bn->d[al]=0; al++; i++; @@ -1067,14 +1067,14 @@ int BN_mul(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, BN_CTX *ctx) t = BN_CTX_get(ctx); if (al == j) /* exact multiple */ { - bn_wexpand(t,k*2); - bn_wexpand(rr,k*2); + if (bn_wexpand(t,k*2) == NULL) goto err; + if (bn_wexpand(rr,k*2) == NULL) goto err; bn_mul_recursive(rr->d,a->d,b->d,al,t->d); } else { - bn_wexpand(t,k*4); - bn_wexpand(rr,k*4); + if (bn_wexpand(t,k*4) == NULL) goto err; + if (bn_wexpand(rr,k*4) == NULL) goto err; bn_mul_part_recursive(rr->d,a->d,b->d,al-j,j,t->d); } rr->top=top; |