s390x assembler pack: add s390x-gf2m.pl and harmonize AES_xts_[en|de]crypt.

[oweals/openssl.git] / crypto / bn / bn_div.c

diff --git a/crypto/bn/bn_div.c b/crypto/bn/bn_div.c
index 6db472f8c321ec162433577540ad73e084be2d3f..92ef8cb918bd6ce61432a9db43b8f80fa0006828 100644 (file)
--- a/crypto/bn/bn_div.c
+++ b/crypto/bn/bn_div.c
@@ -56,6 +56,8 @@
  * [including the GNU Public Licence.]
  */
 
+#define OPENSSL_FIPSAPI
+
 #include <stdio.h>
 #include <openssl/bn.h>
 #include "cryptlib.h"
@@ -102,7 +104,7 @@ 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;
@@ -141,6 +143,7 @@ int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
     *
     *                                  <appro@fy.chalmers.se>
     */
+#undef bn_div_words
 #  define bn_div_words(n0,n1,d0)               \
        ({  asm volatile (                      \
                "divl   %4"                     \
@@ -155,6 +158,7 @@ int BN_div(BIGNUM *dv, BIGNUM *rem, const BIGNUM *m, const BIGNUM *d,
     * Same story here, but it's 128-bit by 64-bit division. Wow!
     *                                  <appro@fy.chalmers.se>
     */
+#  undef bn_div_words
 #  define bn_div_words(n0,n1,d0)               \
        ({  asm volatile (                      \
                "divq   %4"                     \
@@ -229,7 +233,8 @@ 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);