BN_set_bit() etc should use "unsigned int".

Keep it as is to avoid an API change, but check for negativ values.

Submitted by: Nils Larsch

diff --git a/crypto/bn/bn_lib.c b/crypto/bn/bn_lib.c
index 1f45b09d080b6c86593c5fe304a57d42ccccfc0c..43c336f526091718796d81e16b69843e3fff79de 100644 (file)
--- a/crypto/bn/bn_lib.c
+++ b/crypto/bn/bn_lib.c
@@ -782,6 +782,9 @@ int BN_set_bit(BIGNUM *a, int n)
        {
        int i,j,k;
 
+       if (n < 0)
+               return 0;
+
        i=n/BN_BITS2;
        j=n%BN_BITS2;
        if (a->top <= i)
@@ -801,6 +804,9 @@ int BN_clear_bit(BIGNUM *a, int n)
        {
        int i,j;
 
+       if (n < 0)
+               return 0;
+
        i=n/BN_BITS2;
        j=n%BN_BITS2;
        if (a->top <= i) return(0);
@@ -825,6 +831,9 @@ int BN_mask_bits(BIGNUM *a, int n)
        {
        int b,w;
 
+       if (n < 0)
+               return 0;
+
        w=n/BN_BITS2;
        b=n%BN_BITS2;
        if (w >= a->top) return(0);