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Annotation of embedaddon/strongswan/src/libstrongswan/plugins/aesni/aesni_key.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2015 Martin Willi
        !             3:  * Copyright (C) 2015 revosec AG
        !             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 aesni_key aesni_key
        !            18:  * @{ @ingroup aesni
        !            19:  */
        !            20: 
        !            21: #ifndef AESNI_KEY_H_
        !            22: #define AESNI_KEY_H_
        !            23: 
        !            24: #include <library.h>
        !            25: 
        !            26: #include <wmmintrin.h>
        !            27: 
        !            28: /**
        !            29:  * AES block size, in bytes
        !            30:  */
        !            31: #define AES_BLOCK_SIZE 16
        !            32: 
        !            33: typedef struct aesni_key_t aesni_key_t;
        !            34: 
        !            35: /**
        !            36:  * Key schedule for encryption/decryption using on AES-NI.
        !            37:  */
        !            38: struct aesni_key_t {
        !            39: 
        !            40:        /**
        !            41:         * Destroy a aesni_key_t.
        !            42:         */
        !            43:        void (*destroy)(aesni_key_t *this);
        !            44: 
        !            45:        /**
        !            46:         * Number of AES rounds (10, 12, 14)
        !            47:         */
        !            48:        int rounds;
        !            49: 
        !            50:        /**
        !            51:         * Key schedule, for each round + the round 0 (whitening)
        !            52:         */
        !            53:        __attribute__((aligned(sizeof(__m128i)))) __m128i schedule[];
        !            54: };
        !            55: 
        !            56: /**
        !            57:  * Create a AESNI key schedule instance.
        !            58:  *
        !            59:  * @param encrypt              TRUE for encryption schedule, FALSE for decryption
        !            60:  * @param key                  non-expanded crypto key, 16, 24 or 32 bytes
        !            61:  * @return                             key schedule, NULL on invalid key size
        !            62:  */
        !            63: aesni_key_t *aesni_key_create(bool encrypt, chunk_t key);
        !            64: 
        !            65: #endif /** AESNI_KEY_H_ @}*/