| -rw-r--r-- | lib/server.cc | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/server.cc b/lib/server.cc index e81d4b6..8db97be 100644 --- a/lib/server.cc +++ b/lib/server.cc @@ -36,3 +36,4 @@ namespace opkele { throw exception_openssl(OPKELE_CP_ "failed to DH_generate_key()"); - vector<unsigned char> ck(DH_size(dh)); + vector<unsigned char> ck(DH_size(dh)+1); + unsigned char *ckptr = &(ck.front())+1; int cklen = DH_compute_key(&(ck.front()),c_pub,dh); @@ -40,6 +41,6 @@ namespace opkele { throw exception_openssl(OPKELE_CP_ "failed to DH_compute_key()"); - ck.resize(cklen); - // OpenID algorithm requires extra zero in case of set bit here - if(ck[0]&0x80) ck.insert(ck.begin(),1,0); - SHA1(&(ck.front()),ck.size(),key_sha1); + if(cklen && (*ckptr)&0x80) { + (*(--ckptr)) = 0; ++cklen; + } + SHA1(ckptr,cklen,key_sha1); st = sess_dh_sha1; |