diff options
Diffstat (limited to 'openssl/crypto/bn/bn_div.c')
| -rw-r--r-- | openssl/crypto/bn/bn_div.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/openssl/crypto/bn/bn_div.c b/openssl/crypto/bn/bn_div.c index 1e8e57626..802a43d64 100644 --- a/openssl/crypto/bn/bn_div.c +++ b/openssl/crypto/bn/bn_div.c @@ -102,7 +102,7 @@ int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d, /* The next 2 are needed so we can do a dv->d[0]|=1 later * since BN_lshift1 will only work once there is a value :-) */ BN_zero(dv); - bn_wexpand(dv,1); + if(bn_wexpand(dv,1) == NULL) goto end; dv->top=1; if (!BN_lshift(D,D,nm-nd)) goto end; @@ -229,7 +229,8 @@ int BN_div(BIGNUM *dv, BIGNUM *rm, const BIGNUM *num, const BIGNUM *divisor, if (dv == NULL) res=BN_CTX_get(ctx); else res=dv; - if (sdiv == NULL || res == NULL) goto err; + if (sdiv == NULL || res == NULL || tmp == NULL || snum == NULL) + goto err; /* First we normalise the numbers */ norm_shift=BN_BITS2-((BN_num_bits(divisor))%BN_BITS2); @@ -336,7 +337,7 @@ X) -> 0x%08X\n", t2 -= d1; } #else /* !BN_LLONG */ - BN_ULONG t2l,t2h,ql,qh; + BN_ULONG t2l,t2h; q=bn_div_words(n0,n1,d0); #ifdef BN_DEBUG_LEVITTE @@ -354,9 +355,12 @@ X) -> 0x%08X\n", t2l = d1 * q; t2h = BN_UMULT_HIGH(d1,q); #else + { + BN_ULONG ql, qh; t2l=LBITS(d1); t2h=HBITS(d1); ql =LBITS(q); qh =HBITS(q); mul64(t2l,t2h,ql,qh); /* t2=(BN_ULLONG)d1*q; */ + } #endif for (;;) @@ -560,7 +564,7 @@ X) -> 0x%08X\n", t2 -= d1; } #else /* !BN_LLONG */ - BN_ULONG t2l,t2h,ql,qh; + BN_ULONG t2l,t2h; q=bn_div_words(n0,n1,d0); #ifdef BN_DEBUG_LEVITTE @@ -578,9 +582,12 @@ X) -> 0x%08X\n", t2l = d1 * q; t2h = BN_UMULT_HIGH(d1,q); #else + { + BN_ULONG ql, qh; t2l=LBITS(d1); t2h=HBITS(d1); ql =LBITS(q); qh =HBITS(q); mul64(t2l,t2h,ql,qh); /* t2=(BN_ULLONG)d1*q; */ + } #endif for (;;) |