1 files changed, 1 insertions, 1 deletions

diff --git a/lib/server.cc b/lib/server.cc
index 8db97be..b1c5c3a 100644
--- a/lib/server.cc
+++ b/lib/server.cc
@@ -31,17 +31,17 @@ namespace opkele {
             if(pin.has_param("openid.dh_gen"))
                 dh->g = util::base64_to_bignum(pin.get_param("openid.dh_gen"));
             else
                 dh->g = util::dec_to_bignum(data::_default_g);
             if(!DH_generate_key(dh))
                 throw exception_openssl(OPKELE_CP_ "failed to DH_generate_key()");
             vector<unsigned char> ck(DH_size(dh)+1);
             unsigned char *ckptr = &(ck.front())+1;
-            int cklen = DH_compute_key(&(ck.front()),c_pub,dh);
+            int cklen = DH_compute_key(ckptr,c_pub,dh);
             if(cklen<0)
                 throw exception_openssl(OPKELE_CP_ "failed to DH_compute_key()");
             if(cklen && (*ckptr)&0x80) {
                 (*(--ckptr)) = 0; ++cklen;
             }
             SHA1(ckptr,cklen,key_sha1);
             st = sess_dh_sha1;
         }