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Annotation of embedaddon/strongswan/src/libimcv/pts/pts_pcr.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 2012-2016 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 pts_pcr pts_pcr
        !            18:  * @{ @ingroup pts
        !            19:  */
        !            20: 
        !            21: #ifndef PTS_PCR_H_
        !            22: #define PTS_PCR_H_
        !            23: 
        !            24: typedef struct pts_pcr_t pts_pcr_t;
        !            25: 
        !            26: #include <library.h>
        !            27: 
        !            28: #include <tpm_tss_quote_info.h>
        !            29: 
        !            30: /**
        !            31:  * Maximum number of PCR's of TPM, TPM Spec 1.2
        !            32:  */
        !            33: #define PTS_PCR_MAX_NUM                                24
        !            34: 
        !            35: /**
        !            36:  * Number of bytes that can be saved in a PCR of TPM, TPM Spec 1.2
        !            37:  */
        !            38: #define PTS_PCR_LEN                                    20
        !            39: 
        !            40: /**
        !            41:  * Class implementing a shadow PCR register set
        !            42:  */
        !            43: struct pts_pcr_t {
        !            44: 
        !            45:        /**
        !            46:         * Get the number of selected PCRs
        !            47:         *
        !            48:         * @return                              number of selected PCRs
        !            49:         */
        !            50:        uint32_t (*get_count)(pts_pcr_t *this);
        !            51: 
        !            52:        /**
        !            53:         * Mark a PCR as selected
        !            54:         *
        !            55:         * @param pcr                   index of PCR
        !            56:         * @return                              TRUE if PCR index exists
        !            57:         */
        !            58:        bool (*select_pcr)(pts_pcr_t *this, uint32_t pcr);
        !            59: 
        !            60:        /**
        !            61:         * Get the size of the selection field in bytes
        !            62:         *
        !            63:         * @return                              number of bytes written
        !            64:         */
        !            65:        size_t (*get_selection_size)(pts_pcr_t *this);
        !            66: 
        !            67:        /**
        !            68:         * Create an enumerator over all selected PCR indexes
        !            69:         *
        !            70:         * @return                              enumerator
        !            71:         */
        !            72:        enumerator_t* (*create_enumerator)(pts_pcr_t *this);
        !            73: 
        !            74:        /**
        !            75:         * Get the current content of a PCR
        !            76:         *
        !            77:         * @param pcr                   index of PCR
        !            78:         * @return                              content of PCR
        !            79:         */
        !            80:        chunk_t (*get)(pts_pcr_t *this, uint32_t pcr);
        !            81: 
        !            82:        /**
        !            83:         * Set the content of a PCR
        !            84:         *
        !            85:         * @param pcr                   index of PCR
        !            86:         * @param value                 new value of PCR
        !            87:         * @return                              TRUE if value could be set
        !            88:         */
        !            89:        bool (*set)(pts_pcr_t *this, uint32_t pcr, chunk_t value);
        !            90: 
        !            91:        /**
        !            92:         * Extend the content of a PCR
        !            93:         *
        !            94:         * @param pcr                   index of PCR
        !            95:         * @param measurement   measurement value to be extended into PCR
        !            96:         * @return                              new content of PCR
        !            97:         */
        !            98:        chunk_t (*extend)(pts_pcr_t *this, uint32_t pcr, chunk_t measurement);
        !            99: 
        !           100:        /**
        !           101:         * Create a PCR Composite object over all selected PCRs
        !           102:         *
        !           103:         * @return                              PCR Composite object (must be freed)
        !           104:         */
        !           105:        tpm_tss_pcr_composite_t* (*get_composite)(pts_pcr_t *this);
        !           106: 
        !           107:        /**
        !           108: 
        !           109:         * Destroys a pts_pcr_t object.
        !           110:         */
        !           111:        void (*destroy)(pts_pcr_t *this);
        !           112: 
        !           113: };
        !           114: 
        !           115: /**
        !           116:  * Creates an pts_pcr_t object
        !           117:  */
        !           118: pts_pcr_t* pts_pcr_create(void);
        !           119: 
        !           120: #endif /** PTS_PCR_H_ @}*/