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Annotation of embedaddon/strongswan/src/libimcv/pts/pts_dh_group.h, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (C) 2011 Sansar Choinyambuu
                      3:  * HSR Hochschule fuer Technik Rapperswil
                      4:  *
                      5:  * This program is free software; you can redistribute it and/or modify it
                      6:  * under the terms of the GNU General Public License as published by the
                      7:  * Free Software Foundation; either version 2 of the License, or (at your
                      8:  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
                      9:  *
                     10:  * This program is distributed in the hope that it will be useful, but
                     11:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     12:  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
                     13:  * for more details.
                     14:  */
                     15: 
                     16: /**
                     17:  * @defgroup pts_dh_group pts_dh_group
                     18:  * @{ @ingroup pts
                     19:  */
                     20: 
                     21: #ifndef PTS_DH_GROUP_H_
                     22: #define PTS_DH_GROUP_H_
                     23: 
                     24: #include <library.h>
                     25: #include <crypto/diffie_hellman.h>
                     26: 
                     27: typedef enum pts_dh_group_t pts_dh_group_t;
                     28: 
                     29: /**
                     30:  * PTS Diffie Hellman Group Values
                     31:  */
                     32: enum pts_dh_group_t {
                     33:        /** No DH Group */
                     34:        PTS_DH_GROUP_NONE  =                                    0,
                     35:        /** IKE Group 2 */
                     36:        PTS_DH_GROUP_IKE2  =                             (1<<15),
                     37:        /** IKE Group 5 */
                     38:        PTS_DH_GROUP_IKE5  =                             (1<<14),
                     39:        /** IKE Group 14 */
                     40:        PTS_DH_GROUP_IKE14 =                             (1<<13),
                     41:        /** IKE Group 19 */
                     42:        PTS_DH_GROUP_IKE19 =                             (1<<12),
                     43:        /** IKE Group 20 */
                     44:        PTS_DH_GROUP_IKE20 =                             (1<<11),
                     45: };
                     46: 
                     47: /**
                     48:  * Diffie-Hellman Group Values
                     49:  * see section 3.8.6 of PTS Protocol: Binding to TNC IF-M Specification
                     50:  *
                     51:  *                       1
                     52:  *   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
                     53:  *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
                     54:  *  |1|2|3|4|5|R|R|R|R|R|R|R|R|R|R|R|
                     55:  *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
                     56:  *
                     57:  */
                     58: 
                     59: /**
                     60:  * Probe available PTS Diffie-Hellman groups
                     61:  *
                     62:  * @param dh_groups                            returns set of available DH groups
                     63:  * @param mandatory_dh_groups  if TRUE enforce mandatory PTS DH groups
                     64:  * @return                                             TRUE if mandatory DH groups are available
                     65:  *                                                             or at least one optional DH group if
                     66:  *                                                             mandatory_dh_groups is set to FALSE.
                     67:  */
                     68: bool pts_dh_group_probe(pts_dh_group_t *dh_groups, bool mandatory_dh_groups);
                     69: 
                     70: /**
                     71:  * Update supported Diffie-Hellman groups according to configuration
                     72:  *
                     73:  * modp1024: PTS_DH_GROUP_IKE2
                     74:  * modp1536: PTS_DH_GROUP_IKE2  | PTS_DH_GROUP_IKE5
                     75:  * modp2048: PTS_DH_GROUP_IKE2  | PTS_DH_GROUP_IKE5  | PTS_DH_GROUP_IKE14
                     76:  * ecp256:   PTS_DH_GROUP_IKE2  | PTS_DH_GROUP_IKE5  | PTS_DH_GROUP_IKE14 |
                     77:  *           PTS_DH_GROUP_IKE19
                     78:  * ecp384:   PTS_DH_GROUP_IKE2  | PTS_DH_GROUP_IKE5  | PTS_DH_GROUP_IKE14 |
                     79:  *           PTS_DH_GROUP_IKE19 | PTS_DH_GROUP_IKE20
                     80:  *
                     81:  * The PTS-IMC is expected to select the strongest supported group
                     82:  *
                     83:  * @param dh_group                     configured DH group
                     84:  * @param dh_groups                    returns set of available DH groups
                     85:  */
                     86: bool pts_dh_group_update(char *dh_group, pts_dh_group_t *dh_groups);
                     87: 
                     88: /**
                     89:  * Select the strongest supported Diffie-Hellman group
                     90:  * among a set of offered DH groups
                     91:  *
                     92:  * @param supported_groups     set of supported DH groups
                     93:  * @param offered_groups       set of offered DH groups
                     94:  * @return                                     selected DH group
                     95:  */
                     96: pts_dh_group_t pts_dh_group_select(pts_dh_group_t supported_groups,
                     97:                                                                   pts_dh_group_t offered_groups);
                     98: 
                     99: /**
                    100:  * Convert pts_dh_group_t to diffie_hellman_group_t
                    101:  *
                    102:  * @param dh_group                     PTS DH group type
                    103:  * @return                                     IKE DH group type
                    104:  */
                    105: diffie_hellman_group_t pts_dh_group_to_ike(pts_dh_group_t dh_group);
                    106: 
                    107: #endif /** PTS_DH_GROUP_H_ @}*/