Fix copy constructor

diff --git a/src/bignum.h b/src/bignum.h
index f1ec8d4..f37d7ed 100644 (file)
--- a/src/bignum.h
+++ b/src/bignum.h
@@ -69,6 +69,7 @@ public:
 
     CBigNum& operator=(const CBigNum& b)
     {
+        bn = BN_new();
         if (!BN_copy(bn, b.bn))
             throw bignum_error("CBigNum::operator= : BN_copy failed");
         return (*this);