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Annotation of embedaddon/strongswan/src/libstrongswan/plugins/newhope/newhope_noise.h, revision 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_noise newhope_noise
        !            18:  * @{ @ingroup newhope_p
        !            19:  */
        !            20: 
        !            21: #ifndef NEWHOPE_NOISE_H_
        !            22: #define NEWHOPE_NOISE_H_
        !            23: 
        !            24: typedef struct newhope_noise_t newhope_noise_t;
        !            25: 
        !            26: #include <library.h>
        !            27: 
        !            28: /**
        !            29:  * Generate pseudo random noise using a ChaCha20 stream
        !            30:  * initialized with a 256 bit seed and an 8 bit nonce
        !            31:  */
        !            32: struct newhope_noise_t {
        !            33: 
        !            34:        /**
        !            35:         * Return n pseudo random bytes with a uniform distribution
        !            36:         *
        !            37:         * @param nonce         Nonce determining the pseudo random stream
        !            38:         * @param n                     Number of pseudo random bytes to be returned
        !            39:         * @return                      Return array with n pseudo random bytes
        !            40:         */
        !            41:        uint8_t* (*get_uniform_bytes)(newhope_noise_t *this, uint8_t nonce,
        !            42:                                                                  uint16_t n);
        !            43: 
        !            44:        /**
        !            45:         * Return n pseudo random 32-bit words with a Psi16 binomial distribution
        !            46:         *
        !            47:         * @param nonce         Nonce determining the pseudo random stream
        !            48:         * @param n                     Number of pseudo random Psi16 words to be returned
        !            49:         * @param q                     Prime number q determining the ring
        !            50:         * @return                      Return array with n pseudo random 32 bit words
        !            51:         */
        !            52:        uint32_t* (*get_binomial_words)(newhope_noise_t *this, uint8_t nonce,
        !            53:                                                                        uint16_t n, uint16_t q);
        !            54: 
        !            55:        /**
        !            56:         * Destroy a newhope_noise_t object
        !            57:         */
        !            58:        void (*destroy)(newhope_noise_t *this);
        !            59: };
        !            60: 
        !            61: /**
        !            62:  * Creates a new newhope_noise_t object.
        !            63:  *
        !            64:  * @param seed                 256 bit seed (32 byte chunk)
        !            65:  * @return                             newhope_noise_t object, NULL if not supported
        !            66:  */
        !            67: newhope_noise_t *newhope_noise_create(chunk_t seed);
        !            68: 
        !            69: #endif /** NEWHOPE_NOISE_H_ @}*/
        !            70: