Implemented TCG PTS Attributes

This commit is contained in:
Sansar Choinyambuu
2011-09-08 12:08:09 +02:00
committed by Andreas Steffen
parent 0973ec9906
commit 3b80bce8c1
16 changed files with 2406 additions and 0 deletions
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/*
* 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_aik.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_aik_t private_tcg_pts_attr_aik_t;
/**
* Attestation Identity Key (see section 3.13 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
*
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Flags | Attestation Identity Key (Variable Lenght) ~
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* | Attestation Identity Key (Variable Lenght) ~
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*
*/
#define PTS_AIK_SIZE 4
/**
* Private data of an private_tcg_pts_attr_aik_t object.
*/
struct private_tcg_pts_attr_aik_t {
/**
* Public members of private_tcg_pts_attr_tpm_version_info_t
*/
tcg_pts_attr_aik_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;
/**
* Naked Public Key flag
*/
bool naked_pub_aik;
/**
* Attestation Identity Key
*/
chunk_t aik;
};
METHOD(pa_tnc_attr_t, get_vendor_id, pen_t,
private_tcg_pts_attr_aik_t *this)
{
return this->vendor_id;
}
METHOD(pa_tnc_attr_t, get_type, u_int32_t,
private_tcg_pts_attr_aik_t *this)
{
return this->type;
}
METHOD(pa_tnc_attr_t, get_value, chunk_t,
private_tcg_pts_attr_aik_t *this)
{
return this->value;
}
METHOD(pa_tnc_attr_t, get_noskip_flag, bool,
private_tcg_pts_attr_aik_t *this)
{
return this->noskip_flag;
}
METHOD(pa_tnc_attr_t, set_noskip_flag,void,
private_tcg_pts_attr_aik_t *this, bool noskip)
{
this->noskip_flag = noskip;
}
METHOD(pa_tnc_attr_t, build, void,
private_tcg_pts_attr_aik_t *this)
{
bio_writer_t *writer;
u_int8_t flags = 0;
writer = bio_writer_create(PTS_AIK_SIZE);
if(this->naked_pub_aik) flags += 128;
writer->write_uint8 (writer, flags);
writer->write_data(writer, this->aik);
this->value = chunk_clone(writer->get_buf(writer));
writer->destroy(writer);
}
METHOD(pa_tnc_attr_t, process, status_t,
private_tcg_pts_attr_aik_t *this)
{
bio_reader_t *reader;
u_int8_t flags;
if (this->value.len < PTS_AIK_SIZE)
{
DBG1(DBG_TNC, "insufficient data for Attestation Identity Key");
return FAILED;
}
reader = bio_reader_create(this->value);
reader->read_uint8(reader, &flags);
if(flags) this->naked_pub_aik = true;
reader->read_data (reader, sizeof(this->value - 1), &this->aik);
this->aik = chunk_clone(this->aik);
reader->destroy(reader);
return SUCCESS;
}
METHOD(pa_tnc_attr_t, destroy, void,
private_tcg_pts_attr_aik_t *this)
{
free(this->value.ptr);
free(this->aik.ptr);
free(this);
}
METHOD(pa_tnc_attr_t, get_naked_flag, bool,
private_tcg_pts_attr_aik_t *this)
{
return this->naked_pub_aik;
}
METHOD(pa_tnc_attr_t, set_naked_flag,void,
private_tcg_pts_attr_aik_t *this, bool naked)
{
this->naked_pub_aik = naked;
}
METHOD(tcg_pts_attr_aik_t, get_aik, chunk_t,
private_tcg_pts_attr_aik_t *this)
{
return this->aik;
}
METHOD(tcg_pts_attr_aik_t, set_aik, void,
private_tcg_pts_attr_aik_t *this,
chunk_t aik)
{
return this->aik = aik;
}
/**
* Described in header.
*/
pa_tnc_attr_t *tcg_pts_attr_tpm_version_info_create(bool naked_pub_aik, chunk_t aik)
{
private_tcg_pts_attr_aik_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,
},
.get_naked_flag = get_naked_flag,
.set_naked_flag = set_naked_flag,
.get_aik = get_aik,
.set_aik = set_aik,
},
.vendor_id = PEN_TCG,
.type = TCG_PTS_AIK,
.naked_pub_aik = naked_pub_aik;
.aik = aik,
);
return &this->public.pa_tnc_attribute;
}
/**
* Described in header.
*/
pa_tnc_attr_t *tcg_pts_attr_tpm_version_info_create_from_data(chunk_t data)
{
private_tcg_pts_attr_aik_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,
},
.get_naked_flag = get_naked_flag,
.set_naked_flag = set_naked_flag,
.get_aik = get_aik,
.set_aik = set_aik,
},
.vendor_id = PEN_TCG,
.type = TCG_PTS_AIK,
.value = chunk_clone(data),
);
return &this->public.pa_tnc_attribute;
}