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Andreas Steffen, 30.11.2011 14:27
TNC Server with PTS-IMV¶
This HOWTO explains in a step-for-step fashion how a strongSwan IPsec gateway with integrated TNC server functionality and an attached Platform Trust Service Integrity Measurement Verifier (PTS-IMV) can verify remote attestation measurement data provided by a TNC client via the IKEv2 EAP-TTLS protocol.
- Table of contents
- TNC Server with PTS-IMV
Installation and Configuration¶
The following steps describe the installation of the strongSwan software
wget http://download.strongswan.org/strongswan-4.6.2dr1.tar.bz2
tar xjf strongswan-4.6.2dr1.tar.bz2
cd strongswan-4.6.2dr1
./configure --prefix=/usr --sysconfdir=/etc --disable-pluto --enable-openssl --enable-curl
--enable-eap-identity --enable-eap-md5 --enable-eap-ttls --enable-eap-tnc
--enable-tnccs-20 --enable-tnc-imv --enable-imv-attestation
make
[sudo] make install
The /etc/ipsec.conf file defines a remote access template:
# ipsec.conf - strongSwan IPsec configuration file
config setup
charondebug="tnc 3, imc 3, pts 3"
/* TODO */
IKEv2 Negotiation¶
Startup and Initialization¶
The command
ipsec start
starts the TNC-enabled IPsec gateway:
Nov 29 07:39:14 moon charon: 00[DMN] Starting IKEv2 charon daemon (strongSwan 4.6.2dr1) Nov 29 07:39:15 moon charon: 00[KNL] listening on interfaces: Nov 29 07:39:15 moon charon: 00[KNL] eth0 Nov 29 07:39:15 moon charon: 00[KNL] 192.168.0.1 Nov 29 07:39:15 moon charon: 00[KNL] fec0::1 Nov 29 07:39:15 moon charon: 00[KNL] fe80::fcfd:c0ff:fea8:1 Nov 29 07:39:15 moon charon: 00[KNL] eth1 Nov 29 07:39:15 moon charon: 00[KNL] 10.1.0.1 Nov 29 07:39:15 moon charon: 00[KNL] fec1::1 Nov 29 07:39:15 moon charon: 00[KNL] fe80::fcfd:aff:fe01:1
The file /etc/tnc_config
IMV configuration file for strongSwan client IMV "Attestation" /usr/lib/ipsec/imcvs/imv-attestation.so
defines which IMVs are loaded by the TNC server. Also the Privacy CA certificates which are required to establish trust in the AIK certificates are loaded:
Nov 29 07:39:15 moon charon: 00[TNC] TNC recommendation policy is 'default' Nov 29 07:39:15 moon charon: 00[TNC] loading IMVs from '/etc/tnc_config' Nov 29 07:39:15 moon charon: 00[PTS] mandatory PTS measurement algorithm HASH_SHA1[sha1] available Nov 29 07:39:15 moon charon: 00[PTS] mandatory PTS measurement algorithm HASH_SHA256[openssl] available Nov 29 07:39:15 moon charon: 00[PTS] optional PTS measurement algorithm HASH_SHA384[openssl] available Nov 29 07:39:15 moon charon: 00[PTS] optional PTS DH group MODP_2048[gmp] available Nov 29 07:39:15 moon charon: 00[PTS] optional PTS DH group MODP_1536[gmp] available Nov 29 07:39:15 moon charon: 00[PTS] optional PTS DH group MODP_1024[gmp] available Nov 29 07:39:15 moon charon: 00[PTS] mandatory PTS DH group ECP_256[openssl] available Nov 29 07:39:15 moon charon: 00[PTS] optional PTS DH group ECP_384[openssl] available Nov 29 07:39:15 moon charon: 00[TNC] added IETF attributes Nov 29 07:39:15 moon charon: 00[TNC] added ITA-HSR attributes Nov 29 07:39:15 moon charon: 00[LIB] libimcv initialized Nov 29 07:39:15 moon charon: 00[IMV] IMV 1 "Attestation" initialized Nov 29 07:39:15 moon charon: 00[TNC] added TCG attributes Nov 29 07:39:15 moon charon: 00[PTS] added TCG functional component namespace Nov 29 07:39:15 moon charon: 00[PTS] added ITA-HSR functional component namespace Nov 29 07:39:15 moon charon: 00[PTS] added ITA-HSR functional component 'Trusted GRUB Boot Loader' Nov 29 07:39:15 moon charon: 00[PTS] added ITA-HSR functional component 'Trusted Boot' Nov 29 07:39:15 moon charon: 00[PTS] added ITA-HSR functional component 'Linux IMA' Nov 29 07:39:15 moon charon: 00[LIB] libpts initialized Nov 29 07:39:15 moon charon: 00[PTS] loading PTS ca certificates from '/etc/pts/cacerts' Nov 29 07:39:15 moon charon: 00[PTS] loaded ca certificate "O=privacyca.com, CN=Privacy CA Root Certificate" from '/etc/pts/cacerts/privacy_ca_root.pem' Nov 29 07:39:15 moon charon: 00[PTS] loaded ca certificate "O=privacyca.com, CN=Privacy CA Insecure/Unchecked AIK Certificate" from '/etc/pts/cacerts/privacy_ca_level_0.pem' Nov 29 07:39:15 moon charon: 00[PTS] loaded ca certificate "O=privacyca.com, CN=Privacy CA EK-Cert-Checked AIK Certificate" from '/etc/pts/cacerts/privacy_ca_level_1.pem' Nov 29 07:39:15 moon charon: 00[PTS] loaded ca certificate "O=privacyca.com, CN=Privacy CA EK+Platform-Cert-Checked AIK Certificate" from '/etc/pts/cacerts/privacy_ca_level_2.pem' Nov 29 07:39:15 moon charon: 00[IMV] IMV 1 "Attestation" provided with bind function Nov 29 07:39:15 moon charon: 00[TNC] IMV 1 supports 1 message type: 0x00559701 Nov 29 07:39:15 moon charon: 00[TNC] IMV 1 "Attestation" loaded from '/usr/lib/ipsec/imcvs/imv-attestation.so'
Next the IKEv2 credentials, all necessary plugins and the IPsec connection definitions are loaded
Nov 29 07:39:15 moon charon: 00[CFG] loading ca certificates from '/etc/ipsec.d/cacerts' Nov 29 07:39:15 moon charon: 00[CFG] loaded ca certificate "C=CH, O=Linux strongSwan, CN=strongSwan Root CA" from '/etc/ipsec.d/cacerts/strongswanCert.pem' Nov 29 07:39:15 moon charon: 00[CFG] loading aa certificates from '/etc/ipsec.d/aacerts' Nov 29 07:39:15 moon charon: 00[CFG] loading ocsp signer certificates from '/etc/ipsec.d/ocspcerts' Nov 29 07:39:15 moon charon: 00[CFG] loading attribute certificates from '/etc/ipsec.d/acerts' Nov 29 07:39:15 moon charon: 00[CFG] loading crls from '/etc/ipsec.d/crls' Nov 29 07:39:15 moon charon: 00[CFG] loading secrets from '/etc/ipsec.secrets' Nov 29 07:39:15 moon charon: 00[CFG] loaded RSA private key from '/etc/ipsec.d/private/moonKey.pem' Nov 29 07:39:15 moon charon: 00[CFG] loaded EAP secret for carol@strongswan.org Nov 29 07:39:15 moon charon: 00[CFG] loaded EAP secret for dave@strongswan.org Nov 29 07:39:15 moon charon: 00[DMN] loaded plugins: curl sha1 pem pkcs1 gmp random pubkey x509 openssl revocation hmac kernel-netlink socket-default eap-identity eap-md5 eap-ttls eap-tnc tnc-tnccs tnccs-20 sqlite tnc-imv stroke Nov 29 07:39:16 moon charon: 00[JOB] spawning 16 worker threads Nov 29 07:39:16 moon charon: 16[CFG] received stroke: add connection 'rw-allow' Nov 29 07:39:16 moon charon: 16[CFG] loaded certificate "C=CH, O=Linux strongSwan, CN=moon.strongswan.org" from 'moonCert.pem' Nov 29 07:39:16 moon charon: 16[CFG] added configuration 'rw-allow' Nov 29 07:39:16 moon charon: 16[CFG] received stroke: add connection 'rw-isolate' Nov 29 07:39:16 moon charon: 16[CFG] loaded certificate "C=CH, O=Linux strongSwan, CN=moon.strongswan.org" from 'moonCert.pem' Nov 29 07:39:16 moon charon: 16[CFG] added configuration 'rw-isolate'
IKEv2 Exchanges¶
The IPsec gateway moon is passively waiting for IPsec clients to initiate an IKEv2 negotiation starting with an IKE_SA_INIT exchange:
Nov 29 07:39:22 moon charon: 16[NET] received packet: from 192.168.0.254[500] to 192.168.0.1[500] Nov 29 07:39:22 moon charon: 16[ENC] parsed IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) ] Nov 29 07:39:22 moon charon: 16[IKE] 192.168.0.254 is initiating an IKE_SA Nov 29 07:39:22 moon charon: 16[ENC] generating IKE_SA_INIT response 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) ] Nov 29 07:39:22 moon charon: 16[NET] sending packet: from 192.168.0.1[500] to 192.168.0.254[500]
followed by the IKE_AUTH exchange where the IKEv2 gateway proposes a mutual IKEv2 EAP-TTLS only authentication:
Nov 29 07:39:22 moon charon: 08[NET] received packet: from 192.168.0.254[4500] to 192.168.0.1[4500] Nov 29 07:39:22 moon charon: 08[ENC] parsed IKE_AUTH request 1 [ IDi N(INIT_CONTACT) IDr SA TSi TSr N(MOBIKE_SUP) N(ADD_4_ADDR) N(ADD_4_ADDR) N(ADD_4_ADDR) N(EAP_ONLY) ] Nov 29 07:39:22 moon charon: 08[CFG] looking for peer configs matching 192.168.0.1[moon.strongswan.org]...192.168.0.254[carol@strongswan.org] Nov 29 07:39:22 moon charon: 08[CFG] selected peer config 'rw-allow' Nov 29 07:39:22 moon charon: 08[IKE] initiating EAP_TTLS method (id 0xA8) Nov 29 07:39:22 moon charon: 08[IKE] peer supports MOBIKE Nov 29 07:39:22 moon charon: 08[ENC] generating IKE_AUTH response 1 [ IDr EAP/REQ/TTLS ] Nov 29 07:39:22 moon charon: 08[NET] sending packet: from 192.168.0.1[4500] to 192.168.0.254[4500]
IKEv2 EAP-TTLS Tunnel¶
The IKEv2 EAP-TTLS tunnel is set up with certificate-based server authentication
Nov 29 07:39:22 moon charon: 09[NET] received packet: from 192.168.0.254[4500] to 192.168.0.1[4500] Nov 29 07:39:22 moon charon: 09[ENC] parsed IKE_AUTH request 2 [ EAP/RES/TTLS ] Nov 29 07:39:22 moon charon: 09[TLS] received TLS 'signature algorithms' extension Nov 29 07:39:22 moon charon: 09[TLS] received TLS 'elliptic curves' extension Nov 29 07:39:22 moon charon: 09[TLS] received TLS 'ec point formats' extension Nov 29 07:39:22 moon charon: 09[TLS] received TLS 'server name' extension Nov 29 07:39:22 moon charon: 09[TLS] negotiated TLS version TLS 1.2 with suite TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA Nov 29 07:39:22 moon charon: 09[TLS] sending TLS server certificate 'C=CH, O=Linux strongSwan, CN=moon.strongswan.org' Nov 29 07:39:22 moon charon: 09[ENC] generating IKE_AUTH response 2 [ EAP/REQ/TTLS ] Nov 29 07:39:22 moon charon: 09[NET] sending packet: from 192.168.0.1[4500] to 192.168.0.254[4500] Nov 29 07:39:22 moon charon: 06[NET] received packet: from 192.168.0.254[4500] to 192.168.0.1[4500] Nov 29 07:39:22 moon charon: 06[ENC] parsed IKE_AUTH request 3 [ EAP/RES/TTLS ] Nov 29 07:39:22 moon charon: 06[ENC] generating IKE_AUTH response 3 [ EAP/REQ/TTLS ] Nov 29 07:39:22 moon charon: 06[NET] sending packet: from 192.168.0.1[4500] to 192.168.0.254[4500] Nov 29 07:39:22 moon charon: 05[NET] received packet: from 192.168.0.254[4500] to 192.168.0.1[4500] Nov 29 07:39:22 moon charon: 05[ENC] parsed IKE_AUTH request 4 [ EAP/RES/TTLS ]
Tunneled EAP-Identity¶
Via the IKEv2 EAP-TTLS tunnel the server requests the EAP client identity
Nov 29 07:39:22 moon charon: 05[IKE] sending tunneled EAP-TTLS AVP [EAP/REQ/ID] Nov 29 07:39:22 moon charon: 05[ENC] generating IKE_AUTH response 4 [ EAP/REQ/TTLS ] Nov 29 07:39:22 moon charon: 05[NET] sending packet: from 192.168.0.1[4500] to 192.168.0.254[4500] Nov 29 07:39:22 moon charon: 04[NET] received packet: from 192.168.0.254[4500] to 192.168.0.1[4500] Nov 29 07:39:22 moon charon: 04[ENC] parsed IKE_AUTH request 5 [ EAP/RES/TTLS ] Nov 29 07:39:22 moon charon: 04[IKE] received tunneled EAP-TTLS AVP [EAP/RES/ID] Nov 29 07:39:22 moon charon: 04[IKE] received EAP identity 'carol@strongswan.org'
Tunneled EAP-MD5 Client Authentication¶
Next follows an EAP-MD5 client authentication
Nov 29 07:39:22 moon charon: 04[IKE] phase2 method EAP_MD5 selected Nov 29 07:39:22 moon charon: 04[IKE] sending tunneled EAP-TTLS AVP [EAP/REQ/MD5] Nov 29 07:39:22 moon charon: 04[ENC] generating IKE_AUTH response 5 [ EAP/REQ/TTLS ] Nov 29 07:39:22 moon charon: 04[NET] sending packet: from 192.168.0.1[4500] to 192.168.0.254[4500] Nov 29 07:39:22 moon charon: 03[NET] received packet: from 192.168.0.254[4500] to 192.168.0.1[4500] Nov 29 07:39:22 moon charon: 03[ENC] parsed IKE_AUTH request 6 [ EAP/RES/TTLS ] Nov 29 07:39:22 moon charon: 03[IKE] received tunneled EAP-TTLS AVP [EAP/RES/MD5] Nov 29 07:39:22 moon charon: 03[IKE] EAP_TTLS phase2 authentication of 'carol@strongswan.org' with EAP_MD5 successful
Tunneled EAP-TNC Transport¶
Now the EAP-TNC transport protocol connecting the TNC client with the TNC server is started:
Nov 29 07:39:22 moon charon: 03[IKE] phase2 method EAP_TNC selected Nov 29 07:39:22 moon charon: 03[IKE] sending tunneled EAP-TTLS AVP [EAP/REQ/TNC] Nov 29 07:39:22 moon charon: 03[ENC] generating IKE_AUTH response 6 [ EAP/REQ/TTLS ] Nov 29 07:39:22 moon charon: 03[NET] sending packet: from 192.168.0.1[4500] to 192.168.0.254[4500]
PB-TNC/IF-TNCCS 2.0 Connection¶
A first PB-TNC CDATA (IF-TNCCS 2.0 ClientData) batch from the TNC client is received
Nov 29 07:39:23 moon charon: 02[NET] received packet: from 192.168.0.254[4500] to 192.168.0.1[4500] Nov 29 07:39:23 moon charon: 02[ENC] parsed IKE_AUTH request 7 [ EAP/RES/TTLS ] Nov 29 07:39:23 moon charon: 02[IKE] received tunneled EAP-TTLS AVP [EAP/RES/TNC] Nov 29 07:39:23 moon charon: 02[TNC] assigned TNCCS Connection ID 1 Nov 29 07:39:23 moon charon: 02[IMV] IMV 1 "Attestation" created a state for Connection ID 1 Nov 29 07:39:23 moon charon: 02[IMV] IMV 1 "Attestation" changed state of Connection ID 1 to 'Handshake' Nov 29 07:39:23 moon charon: 02[TNC] received TNCCS batch (105 bytes) for Connection ID 1 Nov 29 07:39:23 moon charon: 02[TNC] => 105 bytes @ 0x80ba6b6 Nov 29 07:39:23 moon charon: 02[TNC] 0: 02 00 00 01 00 00 00 69 00 00 00 00 00 00 00 06 .......i........ Nov 29 07:39:23 moon charon: 02[TNC] 16: 00 00 00 1F 41 63 63 65 70 74 2D 4C 61 6E 67 75 ....Accept-Langu Nov 29 07:39:23 moon charon: 02[TNC] 32: 61 67 65 3A 20 65 6E 80 00 00 00 00 00 00 01 00 age: en......... Nov 29 07:39:23 moon charon: 02[TNC] 48: 00 00 42 00 00 55 97 00 00 00 01 00 01 FF FF 01 ..B..U.......... Nov 29 07:39:23 moon charon: 02[TNC] 64: 00 00 00 56 9E 52 8E 00 00 00 00 00 00 00 02 00 ...V.R.......... Nov 29 07:39:23 moon charon: 02[TNC] 80: 00 00 22 00 00 00 00 00 55 62 75 6E 74 75 20 31 ..".....Ubuntu 1 Nov 29 07:39:23 moon charon: 02[TNC] 96: 31 2E 31 30 20 69 36 38 36 1.10 i686 Nov 29 07:39:23 moon charon: 02[TNC] PB-TNC state transition from 'Init' to 'Server Working' Nov 29 07:39:23 moon charon: 02[TNC] processing PB-TNC CDATA batch
containing a 'PB-Language-Preference' and a 'PB-PA' message
Nov 29 07:39:23 moon charon: 02[TNC] processing PB-Language-Preference message (31 bytes) Nov 29 07:39:23 moon charon: 02[TNC] processing PB-PA message (66 bytes)
This causes a new TNCCS connection to be instantiated on the TNC server. Its IF-TNCCS 2.0 state machine immediately transitions from the Init to the ServerWorking state.
The language preference is set to English (en) and the PB-PA message is forwarded to the PTS-IMV which subscribed to this PA message type:
Nov 29 07:39:23 moon charon: 02[TNC] setting language preference to 'en' Nov 29 07:39:23 moon charon: 02[TNC] handling PB-PA message type 'TCG/PTS' 0x005597/0x01
The PA-TNC message contains an 'IETF/Product Information' attribute which carries information about the operating system the PTS-IMC is running on:
Nov 29 07:39:23 moon charon: 02[IMV] IMV 1 "Attestation" received message type 0x00559701 for Connection ID 1 Nov 29 07:39:23 moon charon: 02[TNC] processing PA-TNC message with ID 0x569e528e Nov 29 07:39:23 moon charon: 02[TNC] processing PA-TNC attribute type 'IETF/Product Information' 0x000000/0x00000002 Nov 29 07:39:23 moon charon: 02[TNC] => 22 bytes @ 0x80b4d20 Nov 29 07:39:23 moon charon: 02[TNC] 0: 00 00 00 00 00 55 62 75 6E 74 75 20 31 31 2E 31 .....Ubuntu 11.1 Nov 29 07:39:23 moon charon: 02[TNC] 16: 30 20 69 36 38 36 0 i686
The PTS-IMV creates a PA-TNC message containing a 'Request PTS Protocol Capabilities' and a 'PTS Measurement Algorithm Request' attribute from the TCG namespace:
Nov 29 07:39:23 moon charon: 02[TNC] creating PA-TNC message with ID 0x10fbc931 Nov 29 07:39:23 moon charon: 02[TNC] creating PA-TNC attribute type 'TCG/Request PTS Protocol Capabilities' 0x005597/0x01000000 Nov 29 07:39:23 moon charon: 02[TNC] => 4 bytes @ 0x80bfd54 Nov 29 07:39:23 moon charon: 02[TNC] 0: 00 00 00 0E .... Nov 29 07:39:23 moon charon: 02[TNC] creating PA-TNC attribute type 'TCG/PTS Measurement Algorithm Request' 0x005597/0x06000000 Nov 29 07:39:23 moon charon: 02[TNC] => 4 bytes @ 0x80bfe3c Nov 29 07:39:23 moon charon: 02[TNC] 0: 00 00 80 00 ....
The PB-PA message is sent in a PB-TNC SDATA (ServerData) batch to the TNC client:
Nov 29 07:39:23 moon charon: 02[TNC] creating PB-PA message type 'TCG/PTS' 0x005597/0x01 Nov 29 07:39:23 moon charon: 02[TNC] creating PB-TNC SDATA batch Nov 29 07:39:23 moon charon: 02[TNC] adding PB-PA message Nov 29 07:39:23 moon charon: 02[TNC] PB-TNC state transition from 'Server Working' to 'Client Working' Nov 29 07:39:23 moon charon: 02[TNC] sending PB-TNC SDATA batch (72 bytes) for Connection ID 1 Nov 29 07:39:23 moon charon: 02[TNC] => 72 bytes @ 0x80b65c4 Nov 29 07:39:23 moon charon: 02[TNC] 0: 02 80 00 02 00 00 00 48 80 00 00 00 00 00 00 01 .......H........ Nov 29 07:39:23 moon charon: 02[TNC] 16: 00 00 00 40 00 00 55 97 00 00 00 01 FF FF 00 01 ...@..U......... Nov 29 07:39:23 moon charon: 02[TNC] 32: 01 00 00 00 10 FB C9 31 80 00 55 97 01 00 00 00 .......1..U..... Nov 29 07:39:23 moon charon: 02[TNC] 48: 00 00 00 10 00 00 00 0E 80 00 55 97 06 00 00 00 ..........U..... Nov 29 07:39:23 moon charon: 02[TNC] 64: 00 00 00 10 00 00 80 00 ........ Nov 29 07:39:23 moon charon: 02[IKE] sending tunneled EAP-TTLS AVP [EAP/REQ/TNC] Nov 29 07:39:23 moon charon: 02[ENC] generating IKE_AUTH response 7 [ EAP/REQ/TTLS ] Nov 29 07:39:23 moon charon: 02[NET] sending packet: from 192.168.0.1[4500] to 192.168.0.254[4500]
Nov 29 07:39:23 moon charon: 01[NET] received packet: from 192.168.0.254[4500] to 192.168.0.1[4500] Nov 29 07:39:23 moon charon: 01[ENC] parsed IKE_AUTH request 8 [ EAP/RES/TTLS ] Nov 29 07:39:23 moon charon: 01[IKE] received tunneled EAP-TTLS AVP [EAP/RES/TNC] Nov 29 07:39:23 moon charon: 01[TNC] received TNCCS batch (72 bytes) for Connection ID 1 Nov 29 07:39:23 moon charon: 01[TNC] => 72 bytes @ 0x80be80e Nov 29 07:39:23 moon charon: 01[TNC] 0: 02 00 00 01 00 00 00 48 80 00 00 00 00 00 00 01 .......H........ Nov 29 07:39:23 moon charon: 01[TNC] 16: 00 00 00 40 00 00 55 97 00 00 00 01 00 01 FF FF ...@..U......... Nov 29 07:39:23 moon charon: 01[TNC] 32: 01 00 00 00 0E D3 F1 F3 00 00 55 97 02 00 00 00 ..........U..... Nov 29 07:39:23 moon charon: 01[TNC] 48: 00 00 00 10 00 00 00 0E 00 00 55 97 07 00 00 00 ..........U..... Nov 29 07:39:23 moon charon: 01[TNC] 64: 00 00 00 10 00 00 80 00 ........ Nov 29 07:39:23 moon charon: 01[TNC] PB-TNC state transition from 'Client Working' to 'Server Working' Nov 29 07:39:23 moon charon: 01[TNC] processing PB-TNC CDATA batch
Nov 29 07:39:23 moon charon: 01[TNC] processing PB-PA message (64 bytes) Nov 29 07:39:23 moon charon: 01[TNC] handling PB-PA message type 'TCG/PTS' 0x005597/0x01
Nov 29 07:39:23 moon charon: 01[IMV] IMV 1 "Attestation" received message type 0x00559701 for Connection ID 1 Nov 29 07:39:23 moon charon: 01[TNC] processing PA-TNC message with ID 0x0ed3f1f3 Nov 29 07:39:23 moon charon: 01[TNC] processing PA-TNC attribute type 'TCG/PTS Protocol Capabilities' 0x005597/0x02000000 Nov 29 07:39:23 moon charon: 01[TNC] => 4 bytes @ 0x80be670 Nov 29 07:39:23 moon charon: 01[TNC] 0: 00 00 00 0E .... Nov 29 07:39:23 moon charon: 01[TNC] processing PA-TNC attribute type 'TCG/PTS Measurement Algorithm' 0x005597/0x07000000 Nov 29 07:39:23 moon charon: 01[TNC] => 4 bytes @ 0x80be680 Nov 29 07:39:23 moon charon: 01[TNC] 0: 00 00 80 00 ....
Nov 29 07:39:23 moon charon: 01[PTS] supported PTS protocol capabilities: .VDT. Nov 29 07:39:23 moon charon: 01[PTS] selected PTS measurement algorithm is HASH_SHA1