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Began implementing handline of Functional Component Measuring attributes

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This commit is contained in:
Sansar Choinyambuu
2011-11-28 14:34:20 +01:00
committed by Andreas Steffen
parent 9032e61b88
commit 1c6ebda3db
4 changed files with 195 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/libimcv/plugins/imc_attestation/imc_attestation.c
+130 -5
View File
@@ -260,15 +260,15 @@ TNC_Result TNC_IMC_ReceiveMessage(TNC_IMCID imc_id,
case TCG_PTS_REQ_PROTO_CAPS:
{
tcg_pts_attr_proto_caps_t *attr_cast;
pts_proto_caps_flag_t imc_flags, imv_flags;
pts_proto_caps_flag_t imc_caps, imv_caps;
attr_cast = (tcg_pts_attr_proto_caps_t*)attr;
imv_flags = attr_cast->get_flags(attr_cast);
imc_flags = pts->get_proto_caps(pts);
pts->set_proto_caps(pts, imc_flags & imv_flags);
imv_caps = attr_cast->get_flags(attr_cast);
imc_caps = pts->get_proto_caps(pts);
pts->set_proto_caps(pts, imc_caps & imv_caps);
/* Send PTS Protocol Capabilities attribute */
attr = tcg_pts_attr_proto_caps_create(imc_flags & imv_flags,
attr = tcg_pts_attr_proto_caps_create(imc_caps & imv_caps,
FALSE);
attr_list->insert_last(attr_list, attr);
break;
@@ -350,9 +350,134 @@ TNC_Result TNC_IMC_ReceiveMessage(TNC_IMCID imc_id,
/* PTS-based Attestation Evidence */
case TCG_PTS_REQ_FUNCT_COMP_EVID:
{
tcg_pts_attr_req_funct_comp_evid_t *attr_cast;
pts_proto_caps_flag_t negotiated_caps;
pts_attr_req_funct_comp_evid_flag_t flags;
u_int32_t sub_comp_depth;
u_int32_t comp_name_vendor_id;
u_int8_t family;
pts_qualifier_t qualifier;
pts_funct_comp_name_t name;
attr_info = attr->get_value(attr);
attr_cast = (tcg_pts_attr_req_funct_comp_evid_t*)attr;
negotiated_caps = pts->get_proto_caps(pts);
flags = attr_cast->get_flags(attr_cast);
if (flags & PTS_REQ_FUNC_COMP_FLAG_TTC)
{
attr = ietf_attr_pa_tnc_error_create(PEN_TCG,
TCG_PTS_UNABLE_DET_TTC, attr_info);
attr_list->insert_last(attr_list, attr);
break;
}
if (flags & PTS_REQ_FUNC_COMP_FLAG_VER &&
!(negotiated_caps & PTS_PROTO_CAPS_V))
{
attr = ietf_attr_pa_tnc_error_create(PEN_TCG,
TCG_PTS_UNABLE_LOCAL_VAL, attr_info);
attr_list->insert_last(attr_list, attr);
break;
}
if (flags & PTS_REQ_FUNC_COMP_FLAG_CURR &&
!(negotiated_caps & PTS_PROTO_CAPS_C))
{
attr = ietf_attr_pa_tnc_error_create(PEN_TCG,
TCG_PTS_UNABLE_CUR_EVID, attr_info);
attr_list->insert_last(attr_list, attr);
break;
}
if (flags & PTS_REQ_FUNC_COMP_FLAG_PCR &&
!(negotiated_caps & PTS_PROTO_CAPS_T))
{
attr = ietf_attr_pa_tnc_error_create(PEN_TCG,
TCG_PTS_UNABLE_DET_PCR, attr_info);
attr_list->insert_last(attr_list, attr);
break;
}
sub_comp_depth = attr_cast->get_sub_component_depth(attr_cast);
/* TODO: Implement checking of components with its sub-components */
if (sub_comp_depth != 1)
{
DBG1(DBG_IMC, "Current version of Attestation IMC does not support"
"sub component measurement deeper than 1. "
"Measuring top level component only.");
}
comp_name_vendor_id = attr_cast->get_comp_funct_name_vendor_id(attr_cast);
if (comp_name_vendor_id != PEN_TCG)
{
DBG1(DBG_IMC, "Current version of Attestation IMC supports"
"only functional component namings by TCG ");
break;
}
family = attr_cast->get_family(attr_cast);
if (family)
{
attr = ietf_attr_pa_tnc_error_create(PEN_TCG,
TCG_PTS_INVALID_NAME_FAM, attr_info);
attr_list->insert_last(attr_list, attr);
break;
}
qualifier = attr_cast->get_qualifier(attr_cast);
/* Check if Unknown or Wildcard was set for qualifier */
if (qualifier.kernel && qualifier.sub_component &&
(qualifier.type & PTS_FUNC_COMP_TYPE_ALL))
{
DBG2(DBG_IMC, "Wildcard was set for the qualifier of functional"
" component. Identifying the component with name binary enumeration");
}
else if (!qualifier.kernel && !qualifier.sub_component &&
(qualifier.type & PTS_FUNC_COMP_TYPE_UNKNOWN))
{
DBG2(DBG_IMC, "Unknown was set for the qualifier of functional"
" component. Identifying the component with name binary enumeration");
}
else
{
/* TODO: Implement what todo with received qualifier */
}
name = attr_cast->get_comp_funct_name(attr_cast);
switch (name)
{
case PTS_FUNC_COMP_NAME_BIOS:
{
/* TODO: Implement BIOS measurement */
DBG1(DBG_IMC, "TODO: Implement BIOS measurement");
break;
}
case PTS_FUNC_COMP_NAME_IGNORE:
case PTS_FUNC_COMP_NAME_CRTM:
case PTS_FUNC_COMP_NAME_PLATFORM_EXT:
case PTS_FUNC_COMP_NAME_BOARD:
case PTS_FUNC_COMP_NAME_INIT_LOADER:
case PTS_FUNC_COMP_NAME_OPT_ROMS:
default:
{
DBG1(DBG_IMC, "Unsupported Functional Component Name");
break;
}
}
break;
}
case TCG_PTS_GEN_ATTEST_EVID:
{
pts_simple_evid_final_flag_t flags;
/* TODO: TPM quote operation over included PCR's */
/* Send Simple Evidence Final attribute */
flags = PTS_SIMPLE_EVID_FINAL_FLAG_NO;
attr = tcg_pts_attr_simple_evid_final_create(flags, 0,
chunk_empty, chunk_empty, chunk_empty);
attr_list->insert_last(attr_list, attr);
break;
}
case TCG_PTS_REQ_FILE_META:
{
tcg_pts_attr_req_file_meta_t *attr_cast;
src/libimcv/plugins/imv_attestation/imv_attestation.c
+41 -1
View File
@@ -249,7 +249,7 @@ static TNC_Result send_message(TNC_ConnectionID connection_id)
bool is_dir;
attestation_state->set_handshake_state(attestation_state,
IMV_ATTESTATION_STATE_END);
IMV_ATTESTATION_STATE_COMP_EVID);
/* Does the PTS-IMC have TPM support? */
if (pts->get_proto_caps(pts) & PTS_PROTO_CAPS_T)
@@ -305,6 +305,34 @@ static TNC_Result send_message(TNC_ConnectionID connection_id)
break;
}
case IMV_ATTESTATION_STATE_COMP_EVID:
{
pts_attr_req_funct_comp_evid_flag_t flags;
u_int32_t sub_comp_depth;
pts_qualifier_t qualifier;
pts_funct_comp_name_t name;
attestation_state->set_handshake_state(attestation_state,
IMV_ATTESTATION_STATE_END);
flags = PTS_REQ_FUNC_COMP_FLAG_PCR;
sub_comp_depth = 1;
qualifier.kernel = FALSE;
qualifier.sub_component = FALSE;
qualifier.type = PTS_FUNC_COMP_TYPE_ALL;
name = PTS_FUNC_COMP_NAME_BIOS;
/* Send Request Functional Component Evidence attribute */
attr = tcg_pts_attr_req_funct_comp_evid_create(flags, sub_comp_depth,
PEN_TCG, qualifier, name);
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
/* Send Generate Attestation Evidence attribute */
attr = tcg_pts_attr_gen_attest_evid_create();
attr->set_noskip_flag(attr, TRUE);
msg->add_attribute(msg, attr);
break;
}
case IMV_ATTESTATION_STATE_IML:
DBG1(DBG_IMV, "Attestation IMV has nothing to send: \"%s\"",
handshake_state);
@@ -497,9 +525,21 @@ TNC_Result TNC_IMV_ReceiveMessage(TNC_IMVID imv_id,
/* PTS-based Attestation Evidence */
case TCG_PTS_SIMPLE_COMP_EVID:
{
/** TODO: Implement saving the PCR number, Hash Algo = communicated one,
* PCR transform (truncate SHA256, SHA384), PCR before and after values
*/
break;
}
case TCG_PTS_SIMPLE_EVID_FINAL:
{
/** TODO: Implement construct Quote structure over saved values from
* TCG_PTS_SIMPLE_COMP_EVID and compare with received one
*/
break;
}
case TCG_PTS_FILE_MEAS:
{
tcg_pts_attr_file_meas_t *attr_cast;
src/libpts/tcg/tcg_pts_attr_req_funct_comp_evid.c
+5 -34
View File
@@ -160,30 +160,11 @@ METHOD(pa_tnc_attr_t, build, void,
private_tcg_pts_attr_req_funct_comp_evid_t *this)
{
bio_writer_t *writer;
u_int8_t flags = 0;
u_int8_t qualifier = 0;
writer = bio_writer_create(PTS_REQ_FUNCT_COMP_EVID_SIZE);
/* Determine the flags to set*/
if (this->flags & PTS_REQ_FUNC_COMP_FLAG_PCR)
{
flags += 128;
}
if (this->flags & PTS_REQ_FUNC_COMP_FLAG_CURR)
{
flags += 64;
}
if (this->flags & PTS_REQ_FUNC_COMP_FLAG_VER)
{
flags += 32;
}
if (this->flags & PTS_REQ_FUNC_COMP_FLAG_TTC)
{
flags += 16;
}
writer->write_uint8(writer, flags);
writer->write_uint8(writer, this->flags);
writer->write_uint24 (writer, this->depth);
writer->write_uint24 (writer, this->comp_vendor_id);
@@ -253,14 +234,7 @@ METHOD(pa_tnc_attr_t, process, status_t,
{
this->family += 2;
}
/* TODO: Generate an IF-M error attribute indicating */
/* TCG_PTS_INVALID_NAME_FAM */
//if (&this->comp_vendor_id==PEN_TCG && this->family != PTS_REQ_FUNCT_COMP_FAM_BIN_ENUM)
//{
// DBG1(DBG_TNC, "Functional Name Encoding Family is not set to 00");
//}
if (((fam_and_qualifier >> 5) & 1) )
{
this->qualifier.kernel = true;
@@ -270,10 +244,7 @@ METHOD(pa_tnc_attr_t, process, status_t,
this->qualifier.sub_component = true;
}
this->qualifier.type = ( fam_and_qualifier & 0xF );
/* TODO: Check the type is defined in pts_attr_req_funct_comp_type_t */
reader->read_uint32(reader, &this->name);
/* TODO: Check the name is defined in pts_funct_comp_name_t */
reader->destroy(reader);
return SUCCESS;
@@ -345,9 +316,9 @@ METHOD(tcg_pts_attr_req_funct_comp_evid_t, set_comp_funct_name, void,
*/
pa_tnc_attr_t *tcg_pts_attr_req_funct_comp_evid_create(
pts_attr_req_funct_comp_evid_flag_t flags,
u_int32_t depth, u_int32_t vendor_id,
pts_qualifier_t qualifier,
pts_funct_comp_name_t name)
u_int32_t depth, u_int32_t vendor_id,
pts_qualifier_t qualifier,
pts_funct_comp_name_t name)
{
private_tcg_pts_attr_req_funct_comp_evid_t *this;
src/libpts/tcg/tcg_pts_attr_simple_evid_final.c
+19 -15
View File
@@ -43,7 +43,7 @@ typedef struct private_tcg_pts_attr_simple_evid_final_t private_tcg_pts_attr_sim
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
#define PTS_SIMPLE_EVID_FINAL_SIZE 4
#define PTS_SIMPLE_EVID_FINAL_SIZE 2
#define PTS_SIMPLE_EVID_FINAL_RESERVED 0x00
/**
@@ -158,11 +158,15 @@ METHOD(pa_tnc_attr_t, build, void,
{
flags += 32;
}
writer->write_uint8 (writer, flags);
writer->write_uint8 (writer, PTS_SIMPLE_EVID_FINAL_RESERVED);
writer->write_uint16(writer, this->comp_hash_algorithm);
/* Optional fields */
if (this->comp_hash_algorithm)
{
writer->write_uint16(writer, this->comp_hash_algorithm);
}
if (this->pcr_comp.ptr && this->pcr_comp.len > 0)
{
writer->write_uint32 (writer, this->pcr_comp.len);
@@ -199,9 +203,15 @@ METHOD(pa_tnc_attr_t, process, status_t,
reader = bio_reader_create(this->value);
reader->read_uint8(reader, &flags);
reader->read_uint8(reader, &reserved);
/* Determine the flags to set*/
if (!((flags >> 7) & 1) && !((flags >> 6) & 1))
if ((flags >> 5) & 1)
{
this->flags |= PTS_SIMPLE_EVID_FINAL_FLAG_EVID;
}
if (!((flags >> 6) & PTS_SIMPLE_EVID_FINAL_FLAG_NO))
{
this->flags |= PTS_SIMPLE_EVID_FINAL_FLAG_NO;
}
@@ -217,20 +227,14 @@ METHOD(pa_tnc_attr_t, process, status_t,
{
this->flags |= PTS_SIMPLE_EVID_FINAL_FLAG_TPM_QUOTE_INFO2_CAP_VER;
}
if ((flags >> 5) & 1)
{
this->flags |= PTS_SIMPLE_EVID_FINAL_FLAG_EVID;
}
reader->read_uint8(reader, &reserved);
reader->read_uint16(reader, &algorithm);
this->comp_hash_algorithm = algorithm;
/* Optional TPM PCR Composite field is included */
if (!(this->flags & PTS_SIMPLE_EVID_FINAL_FLAG_NO))
/* Optional Composite Hash Algorithm and TPM PCR Composite field is included */
if ((flags >> 6) & PTS_SIMPLE_EVID_FINAL_FLAG_NO)
{
u_int32_t pcr_comp_len;
u_int32_t tpm_quote_sign_len;
reader->read_uint16(reader, &algorithm);
this->comp_hash_algorithm = algorithm;
reader->read_uint32(reader, &pcr_comp_len);
reader->read_data(reader, pcr_comp_len, &this->pcr_comp);
this->pcr_comp = chunk_clone(this->pcr_comp);