Implemented TCG PTS Generate Attestation Evidence attribute
authorSansar Choinyambuu <schoinya@hsr.ch>
Mon, 8 Aug 2011 14:49:43 +0000 (16:49 +0200)
committerAndreas Steffen <andreas.steffen@strongswan.org>
Thu, 8 Sep 2011 10:08:09 +0000 (12:08 +0200)
Added two new Attributes to sources in Makefile

src/libimcv/Makefile.am
src/libimcv/tcg/tcg_pts_attr_gen_attest_evid.c [new file with mode: 0644]
src/libimcv/tcg/tcg_pts_attr_gen_attest_evid.h [new file with mode: 0644]

index c7ba779..620ef79 100644 (file)
@@ -23,7 +23,9 @@ libimcv_la_SOURCES = \
        tcg/tcg_pts_attr_get_tpm_version_info.h tcg/tcg_pts_attr_get_tpm_version_info.c \
        tcg/tcg_pts_attr_tpm_version_info.h tcg/tcg_pts_attr_tpm_version_info.c \
        tcg/tcg_pts_attr_get_aik.h tcg/tcg_pts_attr_get_aik.c \
-       tcg/tcg_pts_attr_aik.h tcg/tcg_pts_attr_aik.c
+       tcg/tcg_pts_attr_aik.h tcg/tcg_pts_attr_aik.c \
+       tcg/tcg_pts_attr_req_funct_comp_evid.h tcg/tcg_pts_attr_req_funct_comp_evid.c \
+       tcg/tcg_pts_attr_gen_attest_evid.h tcg/tcg_pts_attr_gen_attest_evid.c
 
 # CFLAGS = -Wall -Werror
 
diff --git a/src/libimcv/tcg/tcg_pts_attr_gen_attest_evid.c b/src/libimcv/tcg/tcg_pts_attr_gen_attest_evid.c
new file mode 100644 (file)
index 0000000..0f46487
--- /dev/null
@@ -0,0 +1,193 @@
+/*
+ * 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 "tcg_pts_attr_gen_attest_evid.h"
+
+#include <pa_tnc/pa_tnc_msg.h>
+#include <bio/bio_writer.h>
+#include <bio/bio_reader.h>
+#include <debug.h>
+
+typedef struct private_tcg_pts_attr_gen_attest_evid_t private_tcg_pts_attr_gen_attest_evid_t;
+
+/**
+ * Generate Attestation Evidence (see section 3.14.2 of PTS Protocol: Binding to TNC IF-M Specification)
+ *
+ *                       1                   2                   3
+ *   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ *
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |                           Reserved                            |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  
+ */
+
+#define PTS_GEN_ATTEST_EVID_SIZE               4
+#define PTS_GEN_ATTEST_EVID_RESERVED           0x00
+
+/**
+ * Private data of an tcg_pts_attr_gen_attest_evid_t object.
+ */
+struct private_tcg_pts_attr_gen_attest_evid_t {
+
+       /**
+        * Public members of tcg_pts_attr_gen_attest_evid_t
+        */
+       tcg_pts_attr_gen_attest_evid_t public;
+
+       /**
+        * Attribute vendor ID
+        */
+       pen_t vendor_id;
+
+       /**
+        * Attribute type
+        */
+       u_int32_t type;
+
+       /**
+        * Attribute value
+        */
+       chunk_t value;
+
+       /**
+        * Noskip flag
+        */
+       bool noskip_flag;
+};
+
+METHOD(pa_tnc_attr_t, get_vendor_id, pen_t,
+       private_tcg_pts_attr_gen_attest_evid_t *this)
+{
+       return this->vendor_id;
+}
+
+METHOD(pa_tnc_attr_t, get_type, u_int32_t,
+       private_tcg_pts_attr_gen_attest_evid_t *this)
+{
+       return this->type;
+}
+
+METHOD(pa_tnc_attr_t, get_value, chunk_t,
+       private_tcg_pts_attr_gen_attest_evid_t *this)
+{
+       return this->value;
+}
+
+METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
+       private_tcg_pts_attr_gen_attest_evid_t *this)
+{
+       return this->noskip_flag;
+}
+
+METHOD(pa_tnc_attr_t, set_noskip_flag,void,
+       private_tcg_pts_attr_gen_attest_evid_t *this, bool noskip)
+{
+       this->noskip_flag = noskip;
+}
+
+METHOD(pa_tnc_attr_t, build, void,
+       private_tcg_pts_attr_gen_attest_evid_t *this)
+{
+       bio_writer_t *writer;
+
+       writer = bio_writer_create(PTS_GEN_ATTEST_EVID_SIZE);
+       writer->write_uint32 (writer, PTS_GEN_ATTEST_EVID_RESERVED);
+
+       this->value = chunk_clone(writer->get_buf(writer));
+       writer->destroy(writer);
+}
+
+METHOD(pa_tnc_attr_t, process, status_t,
+       private_tcg_pts_attr_gen_attest_evid_t *this, u_int32_t *offset)
+{
+       bio_reader_t *reader;
+       u_int32_t reserved;
+       
+       if (this->value.len < PTS_GEN_ATTEST_EVID_SIZE)
+       {
+               DBG1(DBG_TNC, "insufficient data for Generate Attestation Evidence");
+               *offset = 0;
+               return FAILED;
+       }
+       reader = bio_reader_create(this->value);
+       reader->read_uint32 (reader, &reserved);
+       reader->destroy(reader);
+
+       return SUCCESS; 
+}
+
+METHOD(pa_tnc_attr_t, destroy, void,
+       private_tcg_pts_attr_gen_attest_evid_t *this)
+{
+       free(this->value.ptr);
+       free(this);
+}
+
+/**
+ * Described in header.
+ */
+pa_tnc_attr_t *tcg_pts_attr_gen_attest_evid_create()
+{
+       private_tcg_pts_attr_gen_attest_evid_t *this;
+
+       INIT(this,
+               .public = {
+                       .pa_tnc_attribute = {
+                               .get_vendor_id = _get_vendor_id,
+                               .get_type = _get_type,
+                               .get_value = _get_value,
+                               .get_noskip_flag = _get_noskip_flag,
+                               .set_noskip_flag = _set_noskip_flag,
+                               .build = _build,
+                               .process = _process,
+                               .destroy = _destroy,
+                       },
+               },
+               .vendor_id = PEN_TCG,
+               .type = TCG_PTS_GEN_ATTEST_EVID,
+       );
+
+       return &this->public.pa_tnc_attribute;
+}
+
+
+/**
+ * Described in header.
+ */
+pa_tnc_attr_t *tcg_pts_attr_gen_attest_evid_create_from_data(chunk_t data)
+{
+       private_tcg_pts_attr_gen_attest_evid_t *this;
+
+       INIT(this,
+               .public = {
+                       .pa_tnc_attribute = {
+                               .get_vendor_id = _get_vendor_id,
+                               .get_type = _get_type,
+                               .get_value = _get_value,
+                               .get_noskip_flag = _get_noskip_flag,
+                               .set_noskip_flag = _set_noskip_flag,
+                               .build = _build,
+                               .process = _process,
+                               .destroy = _destroy,
+                       },
+               },
+               .vendor_id = PEN_TCG,
+               .type = TCG_PTS_GEN_ATTEST_EVID,
+               .value = chunk_clone(data),
+       );
+
+       return &this->public.pa_tnc_attribute;
+}
diff --git a/src/libimcv/tcg/tcg_pts_attr_gen_attest_evid.h b/src/libimcv/tcg/tcg_pts_attr_gen_attest_evid.h
new file mode 100644 (file)
index 0000000..0a65f21
--- /dev/null
@@ -0,0 +1,53 @@
+/*
+ * 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 tcg_pts_attr_gen_attest_evid tcg_pts_attr_gen_attest_evid
+ * @{ @ingroup tcg_pts_attr_gen_attest_evid
+ */
+
+#ifndef TCG_PTS_ATTR_GEN_ATTEST_EVID_H_
+#define TCG_PTS_ATTR_GEN_ATTEST_EVID_H_
+
+typedef struct tcg_pts_attr_gen_attest_evid_t tcg_pts_attr_gen_attest_evid_t;
+
+#include "tcg_attr.h"
+#include "pa_tnc/pa_tnc_attr.h"
+
+/**
+ * Class implementing the TCG PTS Generate Attestation Evidence Attribute
+ *
+ */
+struct tcg_pts_attr_gen_attest_evid_t {
+
+       /**
+        * Public PA-TNC attribute interface
+        */
+       pa_tnc_attr_t pa_tnc_attribute;
+};
+
+/**
+ * Creates an tcg_pts_attr_gen_attest_evid_t object
+ */
+pa_tnc_attr_t* tcg_pts_attr_gen_attest_evid_create();
+
+/**
+ * Creates an tcg_pts_attr_gen_attest_evid_t object from received data
+ *
+ * @param value                                unparsed attribute value
+ */
+pa_tnc_attr_t* tcg_pts_attr_gen_attest_evid_create_from_data(chunk_t value);
+
+#endif /** TCG_PTS_ATTR_GEN_ATTEST_EVID_H_ @}*/