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The famous tpm-emulator by Mario Strasser, previously hosted on BerliOs
License: GNU General Public License v2.0
This project forked from gscsnm/tpm-emulator
The famous tpm-emulator by Mario Strasser, previously hosted on BerliOs
License: GNU General Public License v2.0
_____ ____ __ __ _____ _ _ |_ _| _ \| \/ | | ____|_ __ ___ _ _| | __ _| |_ ___ _ __ | | | |_) | |\/| | _____ | _| | '_ ` _ \| | | | |/ _` | __/ _ \| '__| | | | __/| | | | |_____| | |___| | | | | | |_| | | (_| | || (_) | | |_| |_| |_| |_| |_____|_| |_| |_|\__,_|_|\__,_|\__\___/|_| TPM-Emulator v0.7 - A Software-based TPM and MTM Emulator. -------------------------------------------------------------------------- Copyright -------------------------------------------------------------------------- Copyright (C) 2009-2011 Mario Strasser. Copyright (C) 2004-2009 Mario Strasser, ETH Zurich. 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. 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. Package -------------------------------------------------------------------------- The tpm emulator package comprises four main parts: a) tpmd - a user-space application that implements the actual emulator and can be accessed by means of Unix domain sockets (Unix) or named pipes (Windows). b) tpmd_dev - a kernel module that provides the device /dev/tpm for backward compatibility and forwards the received commands to tpmd (Unix and Mac OS X only). c) tddl - a TSS conform device driver library for the emulator. Compilation and Installation -------------------------------------------------------------------------- The compilation and installation of the TPM emulator package is based on the CMake build environment (version 2.6 or better) and requires that the GNU MP library (version 4.0 or better) is properly installed on your system. A working MinGW compiler suite is further required on Windows (see http://www.mingw.org/). To compile and install the package execute: # tar -xvzf tpm_emulator-X.Y.tar.gz # cd tpm_emulator-X.Y # mkdir build # cd build # cmake ../ # make # make install The script files build.sh and build.bat automate the compliation process. On Windows, the TPM emulator system service has additionally to be registered by calling: # control_tpmd.bat install MTM support can be enabled by replacing # cmake ../ with # cmake ../ -DMTM_EMULATOR=ON Startup -------------------------------------------------------------------------- In order to use the TPM emulator on Unix or Mac OS X, one has to start the TPM emulator daemon and load the TPM device forwarding module. On Linux, this is done by executing: # modprobe tpmd_dev # tpmd On Windows, the TPM emulator service can either be started with the Microsoft Management Console or with the control_tpmd.bat script: # control_tpmd.bat start # control_tpmd.bat status The startup mode of the TPM (see TPM Spec. Part 1) is defined by the startup mode argument and can either be set to clear, save (default) or deactivated. Additionally supported arguments are usage: tpmd [-d] [-f] [-s storage file] [-u unix socket name] [-o user name] [-g group name] [-h] [startup mode] d : enable debug mode f : forces the application to run in the foreground s : storage file to use (default: /var/lib/tpm/tpm_emulator-1_2_0_7) u : unix socket name to use (default: /var/run/tpm/tpmd_socket:0) o : effective user the application should run as g : effective group the application should run as h : print this help message startup mode : must be 'clear', 'save' (default) or 'deactivated and usage: tpmd.exe [-d] [-f] [-s storage file] [-u windows pipe name] [-l log file] [-h] [startup mode] d : enable debug mode f : forces the application to run in the foreground s : storage file to use (default: C:/Program Files/TPM_Emulator/tpm_emulator-1_2_0_7) u : windows named pipe name to use (default: //./pipe/tpmd:0) l : name of the log file (default: C:/Program Files/TPM_Emulator/tpmd.log) h : print this help message startup mode : must be 'clear', 'save' (default) or 'deactivated on Unix and Windows, respectively. If the emulator is started in mode save and fails to load a previously stored TPM state, it will go into fail-stop mode and has to be reloaded. Therefore, the first time the TPM emulator is started, the argument must be set to 'clear'. Recovering a TPM emulator that is in fail-stop mode is done by first deactivating it and then reloading it in mode 'clear': # tpmd deactivated # killall tpmd # tpmd clear Usage and Backward Compatibility -------------------------------------------------------------------------- The most correct and convenient way to access the tpm emulator is to use the provided device driver library (tddl). For a comprehensive description of its functionality we refer to the official TCG specification (see https://www.trustedcomputinggroup.org/specs/TSS), an example of use is given by the test application tddl/test_tddl. Note that on Windows the tddl is called ifxtpm.dll as many applications (e.g., TPM/J) expect this name and do not support alternative drivers. For backward compatibility with existing Unix applications, the kernel module tpmd_dev forwards any command sent to the device /dev/tpm to the tpm emulator daemon. In order to access the emulator directly (i.e., without using the device driver library or the device dev/tpm) all one has to do is to include the header files sys/socket.h and sys/un.h and to replace the open("/dev/tpm") call with something like: struct sockaddr_un addr; fh = socket(PF_UNIX, SOCK_STREAM, 0); if (fh < 0) { /* handle error */ } addr.sun_family = AF_UNIX; strncpy(addr.sun_path, "/var/run/tpm/tpmd_socket:0", sizeof(addr.sun_path)); res = connect(fh, (struct sockaddr*)&addr, sizeof(struct sockaddr_un)); if (res < 0) { /* handle error */ } All subsequent calls of read(), write(), and close() should work as expected. Usage Examples for TPM/J -------------------------------------------------------------------------- === Linux # modprobe tpmd_dev # tpmd -d # cd <path to tpmj>/lib # export CLASSPATH=tpmj.jar:bcprov-jdk15-131.jar:$CLASSPATH # java edu.mit.csail.tpmj.tools.TPMInfo === Mac OS X # sudo kextload /System/Library/Extensions/tpm_bridge.kext # sudo tpmd -d # cd <path to tpmj>/lib # export CLASSPATH=tpmj.jar:bcprov-jdk15-131.jar:$CLASSPATH # sudo java edu.mit.csail.tpmj.tools.TPMInfo === Windows # set PATH=%PROGRAMFILES%\TPM_Emulator;%PATH% # set PATH=%PROGRAMFILES%\TPM_Emulator\lib;%PATH% # control_tpmd.bat start # cd <path to tpmj>\lib # set CLASSPATH=tpmj.jar;bcprov-jdk15-131.jar:%CLASSPATH% # java edu.mit.csail.tpmj.tools.TPMInfo Notes -------------------------------------------------------------------------- * Since release 0.7 the emulator also runs on Darwin (Mac OS X) and on Windows; thanks go to Amit Singh and Domenic Schröder. In addition, the emulator now also supports MTM emulation; thanks go to Jan-Erik Ekberg and Markku Kylänpää from Nokia. * Since release 0.5.1 the emulator supports Free- and OpenBSD; thanks go to Sebastian Schuetz. * Since release 0.5 the kernel-based emulator (tpm_dev) is obsolete. * The name and format of the persistent-storage file has changed between release 0.2 and 0.3, 0.4 and 0.4.1., 0.5 and 0.6, and 0.6 and 0.7. * The DAA support was tested with the IBM DAA Test Suite and should work now as expected. Thanks go to Roger Zimmermann for his kindly help. Contact -------------------------------------------------------------------------- Any comments, suggestions and bug reports are welcome. Please, mention the keyword 'TPM emulator' in the subject. Peter Huewe <[email protected]> Mario Strasser <[email protected]>
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