Changes between Initial Version and Version 1 of tpm

Timestamp:

06/23/2023 09:48:57 PM (2 years ago)

Author:

Ryan Erbstoesser

Comment:

start TPM page

tpm

@@ +1 @@
+= Trusted Protection Module
+
+Gateworks has an optional TPM on some SBCs.
+
+The below models can optionally have it loaded:
+ * Malibu GW8901
+ * Venice GW74xx, GW73xx, GW72xx
+
+The boards can contain an onboard Microchip ATTPM20P-H6MA1-10 TPM connected to the SPI bus. 
+
+This is compliant to the Trusted Computing Group (TCG) Trusted Platform Module (TPM) Version 2.0,
+r116 Trusted Platform Module Library. See link here: [https://trustedcomputinggroup.org/ Link]
+
+Cryptographic Support for:
+ - HMAC
+ - AES-128
+ - SHA-1
+ - SHA-256
+ - ECC BN_P256, ECCNIST_P256
+ -RSA 1024-2048 bit keys
+
+It is controlled via generic TCG SPI Linux driver. TPM 2.0 provides direct access via /dev/tpm0 (with one client at a time), and can be accessed through the tpm2-abrmd resource manager daemon, or kernel-managed access via /dev/tpmrm0
+
+The TPM device is at /dev/tpm0
+
+The TPM tool set (over 100 different commands) can be installed with the following command:
+{{{
+apt install tpm2-tools tpm2-abrmd
+}}}
+
+Example tpm2-tools showing the properties:
+{{{
+root@jammy-malibu:~# tpm2_getcap properties-fixed
+TPM2_PT_FAMILY_INDICATOR:
+  raw: 0x322E3000
+  value: "2.0"
+TPM2_PT_LEVEL:
+  raw: 0
+TPM2_PT_REVISION:
+  raw: 0x77
+  value: 1.19
+TPM2_PT_DAY_OF_YEAR:
+  raw: 0x42
+TPM2_PT_YEAR:
+  raw: 0x7DE
+TPM2_PT_MANUFACTURER:
+  raw: 0x4D434850
+  value: "MCHP"
+TPM2_PT_VENDOR_STRING_1:
+  raw: 0x0
+  value: ""
+  etc.....
+
+}}}
+