Return bignum '0' when BN_rand is asked for a 0 bit random number.
authorBodo Möller <bodo@openssl.org>
Sun, 2 Jul 2000 19:42:19 +0000 (19:42 +0000)
committerBodo Möller <bodo@openssl.org>
Sun, 2 Jul 2000 19:42:19 +0000 (19:42 +0000)
crypto/bn/bn_rand.c

index b1163f7..21ecbc0 100644 (file)
@@ -68,6 +68,12 @@ static int bnrand(int pseudorand, BIGNUM *rnd, int bits, int top, int bottom)
        int ret=0,bit,bytes,mask;
        time_t tim;
 
+       if (bits == 0)
+               {
+               BN_zero(rnd);
+               return 1;
+               }
+
        bytes=(bits+7)/8;
        bit=(bits-1)%8;
        mask=0xff<<bit;