tpm2_unseal(1) General Commands Manual tpm2_unseal(1) (NAME) tpm2_unseal - TPM (SYNOPSIS) tpm2_unseal [OPTIONS] (DESCRIPTION) tpm2_unseal(1) (data blob) TPM . (clear) . tpm2_create (seal) . TPM_ALG_KEYEDHASH . (OPTIONS) o -c, --object-context=OBJECT: (context) . o -p, --auth=AUTH: (auth) -c. o -o, --output=FILE: (unsealed). STDOUT . o --cphash=FILE . cpHash . : cpHash rphash . o --rphash=FILE . rpHash . o -S, --session=FILE: tpm2_startauthsession. . (auditing) / . (REFERENCES) (CONTEXT OBJECT FORMAT) (handle) : o (transient object) TPM . o : o owner: (owner hierarchy) o platform: (platform hierarchy) o endorsement: (endorsement hierarchy) o lockout: (lockout control persistent object) o ( 0x81010013) ..SH " (Authorization Formatting)" TPM2.0 : . (Password) . HMAC . (Sessions) : " (EMPTY PASSWORD) ". auth HMAC . . . HMAC ( tpm2_startauthsession(1)). (Passwords) . : . (String) "str:" ( ) . (Examples) foobar str:foobar (Hex-string) "hex:" () / . (Example) hex:1122334455667788 (File) "file:" "-" stdin . . (Examples) # stdin file:- # file:path/to/password/file # stdin echo: echo foobar | tpm2_tool -p file:- # here-string bash stdin: tpm2_tool -p file:- <<< foobar (Sessions) (policy session) session . tpm2_startauthsession(1) . auth ( policy password) + (Passwords) . (Examples) (session context) session.ctx: session:session.ctx session.ctx authvalue mypassword: session:session.ctx+mypassword session.ctx HEX authvalue 0x11223344: session:session.ctx+hex:11223344 "pcr:" (minilanguage) PCR PCR . PCR : = PCR "PCR bank specifiers" . raw-pcr-file PCR tpm2_pcrread(1) . PCR (Examples) PCR sha256 0 1 2 3 : pcr:sha256:0,1,2,3 AUTH. (COMMON OPTIONS) . o -h --help=[man|no-man]: (manpage) . manpager . "man" "man" man stderr . "no-man" manpager stdout . MANPATH man(1) . o -v --version: tcti . o -V --verbose: . . o -Q --quiet: stdout. o -Z --enable-errata: errata. errata TPM . TPM2TOOLS_ENABLE_ERRATA . o -z --pwd-session: (password session) HMAC . TPM . unsalted OpenSSL FIPS . auth salted . o -R --autoflush: autoflush (transient) . context flush . (autoflush) TPM2TOOLS_AUTOFLUSH yes true . . TCTI (TCTI Configuration) TCTI " " (Transmission Interface) TPM . TCTI TPM . TCTI : 1. -T --tcti 2. : TPM2TOOLS_TCTI. : ( ). TCTI : o tabrmd - tabrmd . tabrmd abrmd tcti . o mssim - TPM . o device - TPM . o none - TPM . off-tpm TCTI . TCTI . "none" . : : ..SS " 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' . tabrmd tcti bus_name=com.example.FooBar: \--tcti=tabrmd:bus_name=com.example.FooBar tcti (abrmd) bus_type=session: \--tcti:bus_type=session : abrmd tabrmd . TCTI. (EXAMPLES) tpm2_createprimary -c primary.ctx -Q tpm2_pcrread -Q -o pcr.bin sha256:0,1,2,3 tpm2_createpolicy -Q --policy-pcr -l sha256:0,1,2,3 -f pcr.bin -L pcr.policy echo 'secret' | tpm2_create -C primary.ctx -L pcr.policy -i-\ -u seal.pub -r seal.priv -c seal.ctx -Q tpm2_unseal -c seal.ctx -p pcr:sha256:0,1,2,3 : o 0 - . o 1 - . o 2 - . o 3 - . o 4 - TCTI. o 5 - . tpm2_testparams. (BUGS) (HELP) (LICENSE) Creative Commons Attribution 4.0 International License (CC BY 4.0) . tpm2-tools tpm2_unseal(1)