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80 lines
2.9 KiB
Bash
80 lines
2.9 KiB
Bash
#!bin/bash
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# outline:
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# 1. Run the tcg_rim_tool to check the validity of the rim using cmd line
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# 2. Run the event_log_tool diff cmdline
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# 3. Output results
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function eventcheck_help() {
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echo "Event Check: Checks a TCG defined Event Log agianst a Integrity Reference Manifest for a Linux Device with a TPM 2.0"
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echo "usage: eventcheck -r [file] - p [file] -s [file] -l [file]";
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echo "Options"
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echo "-r --rim <path> : Reference Integrity Manifest (RIM) <path> Reference Integrity Manifest (RIM) Base RIM file holding OEM product information.";
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echo "-p --publicCertificate <path> : Public key certificate path used to validate the rim file.";
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echo "-s --supportRim <path> : PC Client defined support RIM file holding the reference data provided by the OEM of the product.";
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echo "-l --log <path> : Event Log of the device being tested. Will default to latest event log if parameter is not supplied.";
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echo "-h --help : help listing";
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}
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while [[ "$#" -gt 0 ]]; do
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case $1 in
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-p|--publicCertificate) oem_cert="$2"; shift ;;
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-r|--rim) oem_rim=$2; shift ;;
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-s|--supportRim) support_rim=$2; shift ;;
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-l|--log) event_log=$2; shift ;;
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-h|--help) eventcheck_help; exit 0 ;;
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*) echo "Unknown parameter passed: $1"; eventcheck_help; exit 1 ;;
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esac
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shift
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done
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# Check for required parameters
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if ${oem_rim+"false"}; then
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echo "Error: Base RIM file needs to be specified using the -r parameter";
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echo "Exiting without processing.";
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exit 1;
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fi
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if ${support_rim+"false"}; then
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echo "Error: Support RIM file needs to be specified using the -s parameter";
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echo "Exiting without processing.";
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exit 1;
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fi
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if ${oem_cert+"false"}; then
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echo "Error: OEM Public Key Certificate Chain file needs to be specified using the -p parameter";
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echo "Exiting without processing.";
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exit 1;
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fi
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# If event log not specified, then use the local devices log (if present)
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if ${event_log+"false"}; then
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ech0 "Event log not specified attempting to use local devices event log...";
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event_log="/sys/kernel/security/tpm0/binary_bios_measurements";
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if [ ! -f $event_log ]; then
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kver=$(uname -r);
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echo "Error opening default event log file, sudo may be required.";
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echo " Note kernel version must be greater than 4.18 to produce an Event log. Current verion is $kver.";
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echo "Exiting without processing.";
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exit 1;
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fi
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fi
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echo "OEM Certificate Chain = $oem_cert";
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echo "Base RIM = $oem_rim";
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echo "Support RIM = $support_rim";
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echo "eventlog = $event_log";
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echo "Checking the RIM signature and OEM Certificate Chain";
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java -jar ../tcg_rim_tool/build/libs/tools/tcg_rim_tool-1.0.jar -v $oem_rim -p $oem_cert
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if [ $? -ne 0 ]; then
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exit 1;
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fi
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echo "Comparing RIM against the specified Event Log";
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java -jar ../tcg_eventlog_tool/build/libs/tools/tcg_eventlog_tool-1.0.jar -d $support_rim $event_log
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echo " ";
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echo "Event Check against RIM complete"
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