diff options
Diffstat (limited to 'lib/auth/anon_ecdh.c')
-rw-r--r-- | lib/auth/anon_ecdh.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/lib/auth/anon_ecdh.c b/lib/auth/anon_ecdh.c new file mode 100644 index 0000000000..5e9932faa3 --- /dev/null +++ b/lib/auth/anon_ecdh.c @@ -0,0 +1,151 @@ +/* + * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2009, 2010 Free + * Software Foundation, Inc. + * + * Author: Nikos Mavrogiannopoulos + * + * This file is part of GnuTLS. + * + * The GnuTLS is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public License + * as published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + * USA + * + */ + +/* This file contains the Anonymous Diffie-Hellman key exchange part of + * the anonymous authentication. The functions here are used in the + * handshake. + */ + +#include <gnutls_int.h> + +#ifdef ENABLE_ANON + +#include "gnutls_auth.h" +#include "gnutls_errors.h" +#include "gnutls_dh.h" +#include "auth/anon.h" +#include "gnutls_num.h" +#include "gnutls_mpi.h" +#include <gnutls_state.h> +#include <auth/ecdh_common.h> +#include <ext/ecc.h> + +static int gen_anon_ecdh_server_kx (gnutls_session_t, gnutls_buffer_st*); +static int proc_anon_ecdh_client_kx (gnutls_session_t, opaque *, size_t); +static int proc_anon_ecdh_server_kx (gnutls_session_t, opaque *, size_t); + +const mod_auth_st anon_ecdh_auth_struct = { + "ANON ECDH", + NULL, + NULL, + gen_anon_ecdh_server_kx, + _gnutls_gen_ecdh_common_client_kx, /* this can be shared */ + NULL, + NULL, + + NULL, + NULL, /* certificate */ + proc_anon_ecdh_server_kx, + proc_anon_ecdh_client_kx, + NULL, + NULL +}; + +static int +gen_anon_ecdh_server_kx (gnutls_session_t session, gnutls_buffer_st* data) +{ + ecc_curve_t curve; + int ret; + gnutls_anon_server_credentials_t cred; + + cred = (gnutls_anon_server_credentials_t) + _gnutls_get_cred (session->key, GNUTLS_CRD_ANON, NULL); + if (cred == NULL) + { + gnutls_assert (); + return GNUTLS_E_INSUFFICIENT_CREDENTIALS; + } + + curve = _gnutls_session_ecc_curve_get(session); + if (curve == GNUTLS_ECC_CURVE_INVALID) + return gnutls_assert_val(GNUTLS_E_ECC_NO_SUPPORTED_CURVES); + + if ((ret = + _gnutls_auth_info_set (session, GNUTLS_CRD_ANON, + sizeof (anon_auth_info_st), 1)) < 0) + { + gnutls_assert (); + return ret; + } + + ret = _gnutls_ecdh_common_print_server_kx (session, data, curve); + if (ret < 0) + { + gnutls_assert (); + } + + return ret; +} + + +static int +proc_anon_ecdh_client_kx (gnutls_session_t session, opaque * data, + size_t _data_size) +{ + gnutls_anon_server_credentials_t cred; + ecc_curve_t curve; + + cred = (gnutls_anon_server_credentials_t) + _gnutls_get_cred (session->key, GNUTLS_CRD_ANON, NULL); + if (cred == NULL) + { + gnutls_assert (); + return GNUTLS_E_INSUFFICIENT_CREDENTIALS; + } + + curve = _gnutls_session_ecc_curve_get(session); + if (curve == GNUTLS_ECC_CURVE_INVALID) + return gnutls_assert_val(GNUTLS_E_ECC_NO_SUPPORTED_CURVES); + + return _gnutls_proc_ecdh_common_client_kx (session, data, _data_size, curve); +} + +int +proc_anon_ecdh_server_kx (gnutls_session_t session, opaque * data, + size_t _data_size) +{ + + int ret; + + /* set auth_info */ + if ((ret = + _gnutls_auth_info_set (session, GNUTLS_CRD_ANON, + sizeof (anon_auth_info_st), 1)) < 0) + { + gnutls_assert (); + return ret; + } + + ret = _gnutls_proc_ecdh_common_server_kx (session, data, _data_size); + if (ret < 0) + { + gnutls_assert (); + return ret; + } + + return 0; +} + +#endif /* ENABLE_ANON */ |