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Annotation of embedaddon/strongswan/src/libstrongswan/plugins/af_alg/af_alg_ops.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2010 Martin Willi
        !             3:  * Copyright (C) 2010 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 af_alg_ops af_alg_ops
        !            18:  * @{ @ingroup af_alg
        !            19:  */
        !            20: 
        !            21: #ifndef AF_ALG_OPS_H_
        !            22: #define AF_ALG_OPS_H_
        !            23: 
        !            24: #include <library.h>
        !            25: 
        !            26: #include <linux/if_alg.h>
        !            27: 
        !            28: #ifndef AF_ALG
        !            29: #define AF_ALG 38
        !            30: #endif /* AF_ALG */
        !            31: 
        !            32: #ifndef SOL_ALG
        !            33: #define SOL_ALG 279
        !            34: #endif /* SOL_ALG */
        !            35: 
        !            36: typedef struct af_alg_ops_t af_alg_ops_t;
        !            37: 
        !            38: /**
        !            39:  * Helper to run AF_ALG operations.
        !            40:  */
        !            41: struct af_alg_ops_t {
        !            42: 
        !            43:        /**
        !            44:         * Hash a chunk of data.
        !            45:         *
        !            46:         * @param data          data to hash
        !            47:         * @param out           buffer to write hash to, NULL for append mode
        !            48:         * @param outlen        number of bytes to read into out
        !            49:         * @return                      TRUE if successful
        !            50:         */
        !            51:        bool (*hash)(af_alg_ops_t *this, chunk_t data, char *out, size_t outlen);
        !            52: 
        !            53:        /**
        !            54:         * Reset hasher state.
        !            55:         */
        !            56:        void (*reset)(af_alg_ops_t *this);
        !            57: 
        !            58:        /**
        !            59:         * En-/Decrypt a chunk of data.
        !            60:         *
        !            61:         * @param type          crypto operation (ALG_OP_DECRYPT/ALG_OP_ENCRYPT)
        !            62:         * @param iv            iv to use
        !            63:         * @param data          data to encrypt/decrypt
        !            64:         * @param out           buffer write processed data to
        !            65:         * @return                      TRUE if successful
        !            66:         */
        !            67:        bool (*crypt)(af_alg_ops_t *this, uint32_t type, chunk_t iv, chunk_t data,
        !            68:                                  char *out);
        !            69: 
        !            70:        /**
        !            71:         * Set the key for en-/decryption or HMAC/XCBC operations.
        !            72:         *
        !            73:         * @param key           key to set for transform
        !            74:         * @return                      TRUE if successful
        !            75:         */
        !            76:        bool (*set_key)(af_alg_ops_t *this, chunk_t key);
        !            77: 
        !            78:        /**
        !            79:         * Destroy a af_alg_ops_t.
        !            80:         */
        !            81:        void (*destroy)(af_alg_ops_t *this);
        !            82: };
        !            83: 
        !            84: /**
        !            85:  * Create a af_alg_ops instance.
        !            86:  *
        !            87:  * @param type                 algorithm type (hash, skcipher)
        !            88:  * @param alg                  algorithm name
        !            89:  * @return                             TRUE if AF_ALG socket bound successfully
        !            90:  */
        !            91: af_alg_ops_t *af_alg_ops_create(char *type, char *alg);
        !            92: 
        !            93: #endif /** AF_ALG_OPS_H_ @}*/