tpm2_policynvwritten(1) General Commands Manual tpm2_policynvwritten(1) (NAME) tpm2_policynvwritten - TPM2 (SYNOPSIS) tpm2_policynvwritten [] [] (DESCRIPTION) tpm2_policynvwritten(1) - TPM (NV) . NV (write once) . [] (ARGUMENT) NV . s|c|0|1 . (OPTIONS) o -S, --session=FILE: -S tpm2_startauthsession(1). o -L, --policy=FILE: (policy digest). o --cphash=FILE . cpHash . : cpHash . (References) (COMMON OPTIONS) . o -h, --help=[man|no-man]: . man . "man" "man" man stderr . "no-man" stdout . MANPATH man(1) . o -v, --version: TCTI . o -V, --verbose: . . o -Q, --quiet: stdout. o -Z, --enable-errata: (errata fixups). TPM . TPM2TOOLS_ENABLE_ERRATA . o -z, --pwd-session: HMAC . (clear text) TPM . unsalted OpenSSL FIPS . auth salted . o -R, --autoflush: (autoflush) . . TPM2TOOLS_AUTOFLUSH yes true . TCTI (TCTI Configuration) TCTI "Transmission Interface" TPM . TCTI TPM . TCTI : 1. -T --tcti 2. : TPM2TOOLS_TCTI. : (override) . TCTI : o tabrmd - tabrmd . tabrmd abrmd tcti . o mssim - TPM . o device - TPM . o none - TPM . TPM TCTI . TCTI . "none" . : : . TCTI (TCTI Defaults) TCTI TCTI dlopen(3) . TCTI tabrmd device mssim . -v TCTI . - "default-tcti" TCTI . TCTI (Custom TCTIs) TCTI TCTI . dlopen(3) tcti-name . dlopen(3) . TCTI (TCTI OPTIONS) TCTI : o device: TCTI (device) TPM TCTI . /dev/tpm0 . : -T device:/dev/tpm0 export TPM2TOOLS_TCTI="device:/dev/tpm0" o mssim: TCTI (mssim) IP . 127.0.0.1 2321 . : -T mssim:host=localhost,port=2321 export TPM2TOOLS_TCTI="mssim:host=localhost,port=2321" o abrmd: TCTI abrmd `,' . `=' . o TCTI abrmd : 1. `bus_name' : tabrmd ( ). 2. `bus_type' : dbus ( ) `session' `system'. tcti tabrmd bus_name=com.example.FooBar: \--tcti=tabrmd:bus_name=com.example.FooBar tcti (abrmd) bus_type=session: \--tcti:bus_type=session : abrmd tabrmd . (EXAMPLES) NV (write once). NV "TPMA_NV_WRITTEN" NV . NV (Define the NV index write policy) tpm2_startauthsession -S session.dat tpm2_policycommandcode -S session.dat TPM2_CC_NV_Write tpm2_policynvwritten -S session.dat -L nvwrite.policy c tpm2_flushcontext session.dat NV (Define the NV index with the policy) tpm2_nvdefine -s 1 -a "authread|policywrite" -p nvrdpass -L nvwrite.policy NV (Write the NV index by satisfying the policy) tpm2_startauthsession -S session.dat --policy-session tpm2_policycommandcode -S session.dat TPM2_CC_NV_Write tpm2_policynvwritten -S session.dat c echo 0xAA | xxd -r -p | tpm2_nvwrite 0x01000000 -i- -P session:session.dat tpm2_flushcontext session.dat (RETURNS) : o 0 - . o 1 - . o 2 - . o 3 - . o 4 - TCTI. o 5 - (Non supported scheme). tpm2_testparams. (LIMITATIONS) tpm2_startauthsession(1) : o o tpm2-abrmd. . (BUGS) (Github Issues) (HELP) (Mailing List) (LICENSE) Creative Commons Attribution 4.0 International License (CC BY 4.0) . tpm2-tools tpm2_policynvwritten(1)