moved TSS into pts object
authorAndreas Steffen <andreas.steffen@strongswan.org>
Sat, 20 Aug 2011 21:37:37 +0000 (23:37 +0200)
committerAndreas Steffen <andreas.steffen@strongswan.org>
Thu, 8 Sep 2011 10:08:12 +0000 (12:08 +0200)
src/libimcv/Makefile.am
src/libimcv/plugins/imc_attestation/Makefile.am
src/libimcv/plugins/imc_attestation/imc_attestation.c
src/libimcv/plugins/imc_attestation/imc_attestation_state.c
src/libimcv/plugins/imc_attestation/imc_attestation_state.h
src/libimcv/plugins/imv_attestation/Makefile.am
src/libimcv/plugins/imv_attestation/imv_attestation.c
src/libimcv/plugins/imv_attestation/imv_attestation_state.c
src/libimcv/plugins/imv_attestation/imv_attestation_state.h
src/libimcv/tcg/pts/pts.c [new file with mode: 0644]
src/libimcv/tcg/pts/pts.h [new file with mode: 0644]

index cd250a2..b0b8eb7 100644 (file)
@@ -3,7 +3,7 @@ INCLUDES = -I$(top_srcdir)/src/libstrongswan -I$(top_srcdir)/src/libtncif
 
 ipseclib_LTLIBRARIES = libimcv.la
 
-libimcv_la_LIBADD = $(top_builddir)/src/libtncif/libtncif.la
+libimcv_la_LIBADD = $(top_builddir)/src/libtncif/libtncif.la -ltspi
 
 libimcv_la_SOURCES = \
        imcv.h imcv.c \
@@ -29,6 +29,7 @@ libimcv_la_SOURCES = \
        tcg/tcg_pts_attr_simple_evid_final.h tcg/tcg_pts_attr_simple_evid_final.c \
        tcg/tcg_pts_attr_req_file_meas.h tcg/tcg_pts_attr_req_file_meas.c \
        tcg/tcg_pts_attr_file_meas.h tcg/tcg_pts_attr_file_meas.c \
+       tcg/pts/pts.h tcg/pts/pts.c \
        tcg/pts/pts_funct_comp_name.h \
        tcg/pts/pts_meas_algo.h tcg/pts/pts_meas_algo.c
 
index 4a2a005..5981ac2 100644 (file)
@@ -7,7 +7,7 @@ AM_CFLAGS = -rdynamic
 imcv_LTLIBRARIES = imc-attestation.la
 
 imc_attestation_la_LIBADD = $(top_builddir)/src/libimcv/libimcv.la \
-       $(top_builddir)/src/libstrongswan/libstrongswan.la -ltspi
+       $(top_builddir)/src/libstrongswan/libstrongswan.la
 
 imc_attestation_la_SOURCES = imc_attestation.c \
        imc_attestation_state.h imc_attestation_state.c
index 14d2b13..33a827e 100644 (file)
@@ -20,6 +20,7 @@
 #include <ietf/ietf_attr.h>
 #include <ietf/ietf_attr_pa_tnc_error.h>
 
+#include <tcg/pts/pts.h>
 #include <tcg/tcg_pts_attr_proto_caps.h>
 #include <tcg/tcg_pts_attr_meas_algo.h>
 #include <tcg/tcg_pts_attr_get_tpm_version_info.h>
 #include <dirent.h>
 #include <errno.h>
 
-#include <trousers/tss.h>
-#include <trousers/trousers.h>
-
-
 /* IMC definitions */
 
 static const char imc_name[] = "Attestation";
@@ -151,45 +148,13 @@ TNC_Result TNC_IMC_NotifyConnectionChange(TNC_IMCID imc_id,
        }
 }
 
-/**
- * Get the TPM Version Information
- */
-static TSS_RESULT get_tpm_version_info(chunk_t *info)
-{
-       TSS_HCONTEXT hContext;
-       TSS_HTPM hTPM;
-       TSS_RESULT result;
-
-       /* TODO: Needed for parsing version info on IMV side */
-       //TPM_CAP_VERSION_INFO versionInfo;
-       //UINT64 offset = 0;
-
-       result = Tspi_Context_Create(&hContext);
-       if (result != TSS_SUCCESS)
-       {
-               return result;
-       }
-       result = Tspi_Context_Connect(hContext, NULL);
-       if (result != TSS_SUCCESS)
-       {
-               return result;
-       }
-       result = Tspi_Context_GetTpmObject (hContext, &hTPM);
-       if (result != TSS_SUCCESS)
-       {
-               return result;
-       }
-       result = Tspi_TPM_GetCapability(hTPM, TSS_TPMCAP_VERSION_VAL,  0, NULL,
-                                                                       &info->len, &info->ptr);
-       return result;
-}
 
 /**
  * Get Hash Measurement of a file
  */
 static TNC_Result hash_file(char *path, char *out)
 {
-       BYTE buffer[IMC_ATTESTATION_BUF_SIZE];
+       char buffer[IMC_ATTESTATION_BUF_SIZE];
        FILE *file;
        int bytes_read;
        hasher_t *hasher;
@@ -289,7 +254,7 @@ static TNC_Result send_message(TNC_ConnectionID connection_id)
        /* Switch on the attribute type IMC has received */
        switch (handshake_state)
        {
-               case IMC_ATTESTATION_STATE_REQ_PROTO_CAP:
+               case IMC_ATTESTATION_STATE_REQ_PROTO_CAPS:
                {
                        pts_proto_caps_flag_t flags;
                        if(proto_caps & PTS_PROTO_CAPS_T)
@@ -310,16 +275,14 @@ static TNC_Result send_message(TNC_ConnectionID connection_id)
                }
                case IMC_ATTESTATION_STATE_GET_TPM_INFO:
                {
-                       TSS_RESULT result;
                        chunk_t tpm_version_info;
+                       pts_t *pts;
 
-                       result = get_tpm_version_info(&tpm_version_info);
-                       if (result != TSS_SUCCESS)
+                       pts = attestation_state->get_pts(attestation_state);
+                       if (!pts->get_tpm_version_info(pts, &tpm_version_info))
                        {
-                               DBG1(DBG_IMC,"Error 0x%x on get_tpm_version_info\n", result);
-                               return TNC_RESULT_FATAL;
+                               /* TODO return TCG_PTS_TPM_VERS_NOT_SUPPORTED error attribute */
                        }
-
                        attr = tcg_pts_attr_tpm_version_info_create(tpm_version_info);
                        break;
                }
@@ -535,7 +498,7 @@ TNC_Result TNC_IMC_ReceiveMessage(TNC_IMCID imc_id,
                                        proto_caps = attr_req_proto_caps->get_flags(attr_req_proto_caps);
                                        
                                        attestation_state->set_handshake_state(attestation_state,
-                                                                               IMC_ATTESTATION_STATE_REQ_PROTO_CAP);
+                                                                               IMC_ATTESTATION_STATE_REQ_PROTO_CAPS);
                                        break;
                                }
                                case TCG_PTS_MEAS_ALGO:
index 9ea722e..30bc578 100644 (file)
@@ -44,6 +44,11 @@ struct private_imc_attestation_state_t {
         */
        imc_attestation_handshake_state_t handshake_state;
 
+       /**
+        * PTS object
+        */
+       pts_t *pts;
+
 };
 
 METHOD(imc_state_t, get_connection_id, TNC_ConnectionID,
@@ -61,6 +66,7 @@ METHOD(imc_state_t, change_state, void,
 METHOD(imc_state_t, destroy, void,
        private_imc_attestation_state_t *this)
 {
+       this->pts->destroy(this->pts);
        free(this);
 }
 
@@ -71,11 +77,18 @@ METHOD(imc_attestation_state_t, get_handshake_state, imc_attestation_handshake_s
 }
 
 METHOD(imc_attestation_state_t, set_handshake_state, void,
-       private_imc_attestation_state_t *this, imc_attestation_handshake_state_t new_state)
+       private_imc_attestation_state_t *this,
+       imc_attestation_handshake_state_t new_state)
 {
        this->handshake_state = new_state;
 }
 
+METHOD(imc_attestation_state_t, get_pts, pts_t*,
+       private_imc_attestation_state_t *this)
+{
+       return this->pts;
+}
+
 /**
  * Described in header.
  */
@@ -92,10 +105,12 @@ imc_state_t *imc_attestation_state_create(TNC_ConnectionID connection_id)
                        },
                        .get_handshake_state = _get_handshake_state,
                        .set_handshake_state = _set_handshake_state,
+                       .get_pts = _get_pts,
                },
-               .state = TNC_CONNECTION_STATE_CREATE,
                .connection_id = connection_id,
+               .state = TNC_CONNECTION_STATE_CREATE,
                .handshake_state = IMC_ATTESTATION_STATE_INIT,
+               .pts = pts_create(),
        );
        
        return &this->public.interface;
index 1bc2235..0c41ffb 100644 (file)
@@ -23,6 +23,7 @@
 #define IMC_ATTESTATION_STATE_H_
 
 #include <imc/imc_state.h>
+#include <tcg/pts/pts.h>
 #include <library.h>
 
 typedef struct imc_attestation_state_t imc_attestation_state_t;
@@ -33,7 +34,7 @@ typedef enum imc_attestation_handshake_state_t imc_attestation_handshake_state_t
  */
 enum imc_attestation_handshake_state_t {
        IMC_ATTESTATION_STATE_INIT,
-       IMC_ATTESTATION_STATE_REQ_PROTO_CAP,
+       IMC_ATTESTATION_STATE_REQ_PROTO_CAPS,
        IMC_ATTESTATION_STATE_REQ_MEAS_ALGO,
        IMC_ATTESTATION_STATE_GET_TPM_INFO,
        IMC_ATTESTATION_STATE_GET_AIK,
@@ -55,24 +56,33 @@ struct imc_attestation_state_t {
        imc_state_t interface;
        
        /**
-        * get state of the handshake
+        * Get state of the handshake
         *
-        * @return                              the handshake state of IMC
+        * @return                                      the handshake state of IMC
         */
        imc_attestation_handshake_state_t (*get_handshake_state)(imc_attestation_state_t *this);
        
        /**
-        * get state of the handshake
+        * Set state of the handshake
         *
         * @param new_state                     the handshake state of IMC
         */
-       void (*set_handshake_state)(imc_attestation_state_t *this, imc_attestation_handshake_state_t new_state);
+       void (*set_handshake_state)(imc_attestation_state_t *this,
+                                                               imc_attestation_handshake_state_t new_state);
+
+       /**
+        * Get the PTS object
+        *
+        * @return                                      PTS object
+        */
+       pts_t* (*get_pts)(imc_attestation_state_t *this);
+
 };
 
 /**
  * Create an imc_attestation_state_t instance
  *
- * @param id           connection ID
+ * @param id                                   connection ID
  */
 imc_state_t* imc_attestation_state_create(TNC_ConnectionID id);
 
index b0fa6a5..2423c52 100644 (file)
@@ -7,7 +7,7 @@ AM_CFLAGS = -rdynamic
 imcv_LTLIBRARIES = imv-attestation.la
 
 imv_attestation_la_LIBADD = $(top_builddir)/src/libimcv/libimcv.la \
-       $(top_builddir)/src/libstrongswan/libstrongswan.la -ltspi
+       $(top_builddir)/src/libstrongswan/libstrongswan.la
 
 imv_attestation_la_SOURCES = imv_attestation.c \
        imv_attestation_state.h imv_attestation_state.c
index 554077d..3162f07 100644 (file)
@@ -19,8 +19,9 @@
 #include <pa_tnc/pa_tnc_msg.h>
 #include <ietf/ietf_attr.h>
 #include <ietf/ietf_attr_pa_tnc_error.h>
-#include <tcg/tcg_attr.h>
 
+#include <tcg/pts/pts.h>
+#include <tcg/tcg_attr.h>
 #include <tcg/tcg_pts_attr_proto_caps.h>
 #include <tcg/tcg_pts_attr_meas_algo.h>
 #include <tcg/tcg_pts_attr_get_tpm_version_info.h>
@@ -40,9 +41,6 @@
 #include <debug.h>
 #include <utils/linked_list.h>
 
-#include <trousers/tss.h>
-#include <trousers/trousers.h>
-
 /* IMV definitions */
 
 static const char imv_name[] = "Attestation";
@@ -250,7 +248,7 @@ static TNC_Result send_message(TNC_ConnectionID connection_id)
                        attr = tcg_pts_attr_proto_caps_create(flags, TRUE);
                        break;
                }
-               case IMV_ATTESTATION_STATE_PROTO_CAP:
+               case IMV_ATTESTATION_STATE_PROTO_CAPS:
                {
                        /* Send Measurement Algorithms attribute */
                        attr = tcg_pts_attr_meas_algo_create(supported_algorithms, FALSE);
@@ -428,7 +426,7 @@ TNC_Result TNC_IMV_ReceiveMessage(TNC_IMVID imv_id,
                                        proto_caps = attr_proto_caps->get_flags(attr_proto_caps);
                                        /* TODO: What to do with the protocol capabilities from imc */
                                        attestation_state->set_handshake_state(attestation_state,
-                                                                                       IMV_ATTESTATION_STATE_PROTO_CAP);
+                                                                                       IMV_ATTESTATION_STATE_PROTO_CAPS);
                                        break;
                                }
                                case TCG_PTS_MEAS_ALGO_SELECTION:
@@ -457,27 +455,12 @@ TNC_Result TNC_IMV_ReceiveMessage(TNC_IMVID imv_id,
                                {
                                        tcg_pts_attr_tpm_version_info_t *attr_tpm;
                                        chunk_t tpm_version_info;
-                                       TSS_RESULT result;
-                                       TPM_CAP_VERSION_INFO versionInfo;
-                                       UINT64 offset = 0;
+                                       pts_t *pts;
                                        
                                        attr_tpm = (tcg_pts_attr_tpm_version_info_t*)attr;
                                        tpm_version_info = attr_tpm->get_tpm_version_info(attr_tpm);
-                                       
-                                       result = Trspi_UnloadBlob_CAP_VERSION_INFO(&offset,
-                                                                                       tpm_version_info.ptr, &versionInfo);
-                                       if (result != TSS_SUCCESS)
-                                       {
-                                               DBG1(DBG_IMV, "TSS Error 0x%x", result);
-                                               return TNC_RESULT_FATAL;
-                                       }
-                                       DBG2(DBG_IMV, "TPM 1.2 Version Info: "
-                                               "Chip Version: %hhu.%hhu.%hhu.%hhu, "
-                                               "Spec Level: %hu, Errata Rev: %hhu, Vendor ID: %.4s",
-                                               versionInfo.version.major, versionInfo.version.minor,
-                                               versionInfo.version.revMajor, versionInfo.version.revMinor,
-                                               versionInfo.specLevel, versionInfo.errataRev,
-                                               versionInfo.tpmVendorID);
+                                       pts = attestation_state->get_pts(attestation_state);                                    
+                                       pts->set_tpm_version_info(pts, tpm_version_info);
 
                                        attestation_state->set_handshake_state(attestation_state,
                                                                                        IMV_ATTESTATION_STATE_TPM_INFO);
index 6323f8a..8a6fb60 100644 (file)
@@ -54,6 +54,12 @@ struct private_imv_attestation_state_t {
         * IMV evaluation result
         */
        TNC_IMV_Evaluation_Result eval;
+
+       /**
+        * PTS object
+        */
+       pts_t *pts;
+
 };
 
 typedef struct entry_t entry_t;
@@ -150,6 +156,7 @@ METHOD(imv_state_t, get_reason_string, bool,
 METHOD(imv_state_t, destroy, void,
        private_imv_attestation_state_t *this)
 {
+       this->pts->destroy(this->pts);
        free(this);
 }
 
@@ -165,6 +172,12 @@ METHOD(imv_attestation_state_t, set_handshake_state, void,
        this->handshake_state = new_state;
 }
 
+METHOD(imv_attestation_state_t, get_pts, pts_t*,
+       private_imv_attestation_state_t *this)
+{
+       return this->pts;
+}
+
 /**
  * Described in header.
  */
@@ -184,12 +197,14 @@ imv_state_t *imv_attestation_state_create(TNC_ConnectionID connection_id)
                        },
                        .get_handshake_state = _get_handshake_state,
                        .set_handshake_state = _set_handshake_state,
+                       .get_pts = _get_pts,
                },
+               .connection_id = connection_id,
                .state = TNC_CONNECTION_STATE_CREATE,
                .handshake_state = IMV_ATTESTATION_STATE_INIT,
                .rec = TNC_IMV_ACTION_RECOMMENDATION_NO_RECOMMENDATION,
                .eval = TNC_IMV_EVALUATION_RESULT_DONT_KNOW,
-               .connection_id = connection_id,
+               .pts = pts_create(),
        );
        
        return &this->public.interface;
index 94307fd..b76598c 100644 (file)
@@ -23,6 +23,7 @@
 #define IMV_ATTESTATION_STATE_H_
 
 #include <imv/imv_state.h>
+#include <tcg/pts/pts.h>
 #include <library.h>
 
 typedef struct imv_attestation_state_t imv_attestation_state_t;
@@ -33,7 +34,7 @@ typedef enum imv_attestation_handshake_state_t imv_attestation_handshake_state_t
  */
 enum imv_attestation_handshake_state_t {
        IMV_ATTESTATION_STATE_INIT,
-       IMV_ATTESTATION_STATE_PROTO_CAP,
+       IMV_ATTESTATION_STATE_PROTO_CAPS,
        IMV_ATTESTATION_STATE_MEAS_ALGO,
        IMV_ATTESTATION_STATE_TPM_INFO,
        IMV_ATTESTATION_STATE_AIK,
@@ -55,24 +56,33 @@ struct imv_attestation_state_t {
        imv_state_t interface;
 
        /**
-        * get state of the handshake
+        * Get state of the handshake
         *
-        * @return                              the handshake state of IMV
+        * @return                                      the handshake state of IMV
         */
        imv_attestation_handshake_state_t (*get_handshake_state)(imv_attestation_state_t *this);
        
        /**
-        * get state of the handshake
+        * Set state of the handshake
         *
         * @param new_state                     the handshake state of IMV
         */
-       void (*set_handshake_state)(imv_attestation_state_t *this, imv_attestation_handshake_state_t new_state);
+       void (*set_handshake_state)(imv_attestation_state_t *this,
+                                                               imv_attestation_handshake_state_t new_state);
+
+       /**
+        * Get the PTS object
+        *
+        * @return                                      PTS object
+        */
+       pts_t* (*get_pts)(imv_attestation_state_t *this);
+
 };
 
 /**
  * Create an imv_attestation_state_t instance
  *
- * @param id           connection ID
+ * @param id                                   connection ID
  */
 imv_state_t* imv_attestation_state_create(TNC_ConnectionID id);
 
diff --git a/src/libimcv/tcg/pts/pts.c b/src/libimcv/tcg/pts/pts.c
new file mode 100644 (file)
index 0000000..486bd16
--- /dev/null
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2011 Sansar Choinyambuu
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+#include "pts.h"
+
+#include <debug.h>
+
+#include <trousers/tss.h>
+#include <trousers/trousers.h>
+
+typedef struct private_pts_t private_pts_t;
+
+/**
+ * Private data of a pts_t object.
+ *
+ */
+struct private_pts_t {
+
+       /**
+        * Public pts_t interface.
+        */
+       pts_t public;
+
+       /**
+        * Contains a TPM_CAP_VERSION_INFO struct
+        */
+       chunk_t tpm_version_info;
+};
+
+/**
+ * Print TPM 1.2 Version Info
+ */
+static void print_tpm_version_info(private_pts_t *this)
+{
+       TPM_CAP_VERSION_INFO versionInfo;
+       UINT64 offset = 0;
+       TSS_RESULT result;
+
+       result = Trspi_UnloadBlob_CAP_VERSION_INFO(&offset,
+                                                       this->tpm_version_info.ptr, &versionInfo);
+       if (result != TSS_SUCCESS)
+       {
+               DBG1(DBG_TNC, "could not parse tpm version info: tss error 0x%x",
+                        result);
+       }
+       else
+       {
+               DBG2(DBG_TNC, "TPM 1.2 Version Info: Chip Version: %hhu.%hhu.%hhu.%hhu,"
+                        " Spec Level: %hu, Errata Rev: %hhu, Vendor ID: %.4s",
+                        versionInfo.version.major, versionInfo.version.minor,
+                        versionInfo.version.revMajor, versionInfo.version.revMinor,
+                        versionInfo.specLevel, versionInfo.errataRev, 
+                        versionInfo.tpmVendorID);
+       }
+}
+
+METHOD(pts_t, get_tpm_version_info, bool,
+       private_pts_t *this, chunk_t *info)
+{
+       TSS_HCONTEXT hContext;
+       TSS_HTPM hTPM;
+       TSS_RESULT result;
+
+       if (!this->tpm_version_info.ptr)
+       {
+               result = Tspi_Context_Create(&hContext);
+               if (result != TSS_SUCCESS)
+               {
+                       goto err;
+               }
+               result = Tspi_Context_Connect(hContext, NULL);
+               if (result != TSS_SUCCESS)
+               {
+                       goto err;
+               }
+               result = Tspi_Context_GetTpmObject (hContext, &hTPM);
+               if (result != TSS_SUCCESS)
+               {
+                       goto err;
+               }
+               result = Tspi_TPM_GetCapability(hTPM, TSS_TPMCAP_VERSION_VAL,  0, NULL,
+                                                                               &this->tpm_version_info.len,
+                                                                               &this->tpm_version_info.ptr);
+               if (result != TSS_SUCCESS)
+               {
+                       goto err;
+               }
+               this->tpm_version_info = chunk_clone(this->tpm_version_info);
+       }
+       *info = this->tpm_version_info;
+       print_tpm_version_info(this);
+       return TRUE;
+
+err:
+       DBG1(DBG_TNC, "could not get tpm version info: tss error 0x%x", result);
+       return FALSE;   
+}
+
+METHOD(pts_t, set_tpm_version_info, void,
+       private_pts_t *this, chunk_t info)
+{
+       this->tpm_version_info = chunk_clone(info);
+       print_tpm_version_info(this);
+}
+
+METHOD(pts_t, destroy, void,
+       private_pts_t *this)
+{
+       free(this->tpm_version_info.ptr);
+       free(this);
+}
+
+/**
+ * See header
+ */
+pts_t *pts_create(void)
+{
+       private_pts_t *this;
+
+       INIT(this,
+               .public = {
+                       .get_tpm_version_info = _get_tpm_version_info,
+                       .set_tpm_version_info = _set_tpm_version_info,
+                       .destroy = _destroy,
+               },
+       );
+
+       return &this->public;
+}
+
diff --git a/src/libimcv/tcg/pts/pts.h b/src/libimcv/tcg/pts/pts.h
new file mode 100644 (file)
index 0000000..51ea003
--- /dev/null
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2011 Sansar Choinyambuu
+ * HSR Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+/**
+ * @defgroup pts pts
+ * @{ @ingroup pts
+ */
+
+#ifndef PTS_H_
+#define PTS_H_
+
+typedef struct pts_t pts_t;
+
+#include <library.h>
+
+/**
+ * Class implementing the TCG Platform Trust System (PTS)
+ *
+ */
+struct pts_t {
+
+       /**
+        * get TPM 1.2 Version Info
+        *
+        * @param info  chunk containing a TPM_CAP_VERSION_INFO struct
+        * @return              TRUE if TPM Version Info available 
+        */
+       bool (*get_tpm_version_info)(pts_t *this, chunk_t *info);
+
+       /**
+        * set TPM 1.2 Version Info
+        *
+        * @param info  chunk containing a TPM_CAP_VERSION_INFO struct 
+        */
+       void (*set_tpm_version_info)(pts_t *this, chunk_t info);
+
+       /**
+        * Destroys a pts_t object.
+        */
+       void (*destroy)(pts_t *this);
+
+};
+
+/**
+ * Creates an pts_t object
+ */
+pts_t* pts_create(void);
+
+#endif /** PTS_H_ @}*/