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Annotation of embedaddon/strongswan/src/libstrongswan/plugins/newhope/newhope_reconciliation.h, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (C) 2016 Andreas Steffen
                      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 newhope_reconciliation newhope_reconciliation
                     18:  * @{ @ingroup newhope_p
                     19:  */
                     20: 
                     21: #ifndef NEWHOPE_RECONCILIATION_H_
                     22: #define NEWHOPE_RECONCILIATION_H_
                     23: 
                     24: typedef struct newhope_reconciliation_t newhope_reconciliation_t;
                     25: 
                     26: #include <library.h>
                     27: 
                     28: /**
                     29:  * Class assisting the error reconciliation
                     30:  * resulting in a key exchange error rate < 2^(-60)
                     31:  */
                     32: struct newhope_reconciliation_t {
                     33: 
                     34:        /**
                     35:         * Generate reconciliation polynomial
                     36:         *
                     37:         * @param v                     polynomial v
                     38:         * @param rbits         pseudo random bit array
                     39:         * @return                      return array with reconciliation polynomial
                     40:         */
                     41:        uint8_t* (*help_reconcile)(newhope_reconciliation_t *this,
                     42:                                                           uint32_t *v, uint8_t *rbits);
                     43: 
                     44:        /**
                     45:         * Use reconciliation polynomial r to derive shared secret
                     46:         *
                     47:         * @param v                     polynomial v or v'
                     48:         * @param r                     reconciliation polynomial r
                     49:         * @return                      Return shared secret
                     50:         */
                     51:        chunk_t (*reconcile)(newhope_reconciliation_t *this,
                     52:                                                uint32_t *v, uint8_t *r);
                     53: 
                     54:        /**
                     55:         * Destroy a newhope_reconciliation_t object
                     56:         */
                     57:        void (*destroy)(newhope_reconciliation_t *this);
                     58: };
                     59: 
                     60: /**
                     61:  * Creates a new newhope_reconciliation_t object.
                     62:  *
                     63:  * @param n                            array size
                     64:  * @param q                            prime modulus
                     65:  * @return                             newhope_reconciliation_t object
                     66:  */
                     67: newhope_reconciliation_t *newhope_reconciliation_create(int n, int32_t q);
                     68: 
                     69: #endif /** NEWHOPE_RECONCILIATION_H_ @}*/
                     70: