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tpm_nvread(8) [centos man page]

tpm_nvread(8)															     tpm_nvread(8)

NAME
tpm_nvread SYNOPSIS
tpm_nvread [OPTIONS] DESCRIPTION
tpm_nvread reads data from an NVRAM area and either displays them or writes them into a file. The user must provide the index of the NVRAM area. If the user provided the number of bytes to read then this will be the maximum number of bytes that will be read from the NVRAM area, otherwise the whole NVRAM area will be read. Some NVRAM areas only allow read sizes of zero, i.e., NVRAM area with index 0. Optionally an offset into the NVRAM area can be given where the reading of the data is to start. If the NVRAM area has permission bits set that require owner or NVRAM area authentication, then the password must be provided via the password option. The following options are supported: -h, --help Display command usage info. -v, --version Display command version info. -l, --log [none|error|info|debug] Set logging level. -u, --unicode Use TSS UNICODE encoding for passwords to comply with applications using TSS popup boxes -z, --well-known Use a secret of all zeros (20 bytes of zeros) as either the NVRAM area or owner secret. -p, --password Depending on what type of authentication is required for the NVRAM area, this must either be the NVRAM area or owner password. A password may be directly provided for example by using '--password=password' or '-ppassword'. If no password is provided then the program will prompt the user for the password. -i, --index The index of the NVRAM area. The parameter may either be a decimal number or a hexadecimal number starting with '0x'. -s, --size The number of bytes to read from the NVRAM area. The parameter may either be a decimal number or a hexadecimal number starting with '0x'. -n, --offset (optional parameter) The offset into the NVRAM area from where to start reading. The parameter may either be a decimal number or a hexadecimal number starting with '0x'. -f, --filename (optional parameter) The name of a file the read data will be written into. If no filename is given the data will be printed to stdout. SEE ALSO
tpm_nvdefine(8), tpm_nvinfo(8), tpm_nvrelease(8), tpm_nvwrite(8) REPORTING BUGS
Report bugs to <trousers-users@lists.sourceforge.net> TPM Management 2011-07-11 tpm_nvread(8)

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tpm_nvdefine(8) 														   tpm_nvdefine(8)

NAME
tpm_nvdefine SYNOPSIS
tpm_nvdefine [OPTIONS] DESCRIPTION
tpm_nvdefine defines a new NVRAM area at the given index and of given size. The user has to provide the permissions that control access to the NVRAM area. Owner authentication is necessary once the NVRAM area 0xFFFFFFFF has been defined. The owner password may be provided on the command line using the owner password option. The following options are supported: -h, --help Display command usage info. -v, --version Display command version info. -l, --log [none|error|info|debug] Set logging level. -u, --unicode Use TSS UNICODE encoding for passwords to comply with applications using TSS popup boxes -y, --owner-well-known Use a secret of all zeros (20 bytes of zeros) as the owner's secret. -z, --area-well-known Use a secret of all zeros (20 bytes of zeros) as the NVRAM area's secret. -o, --pwdo (optional parameter) The owner password. A password may be directly provided for example by using '--pwdo=password' or '-opassword'. If no password is provided with this option then the program will prompt the user for the password. -a, --pwda (optional parameter) The NVRAM area password. A password may be directly provided for example by using '--pwda=password' or '-apassword'. If no password is provided with this option then the program will prompt the user for the password. -i, --index The index of the NVRAM area. The parameter must either be a decimal number or a hexadecimal number starting with '0x'. To select the NVRAM area with index 0x100, the command line parameter should be '-i 0x100' or '--index 0x100'. -s, --size The size of the NVRAM area. The parameter must either be a decimal number or a hexadecimal number starting with '0x'. -p, --permissions The access permissions associated with the NVRAM area. The parameter must either be a decimal number or a hexadecimal number staring with '0x'. It is possible to logically 'or' numbers or strings. The following strings are supported: AUTHREAD Reading requires NVRAM area authorization. AUTHWRITE Writing requires NVRAM area authorization. PPREAD Reading requires physical presence. PPWRITE Writing requires physical presence. OWNERREAD Reading requires owner authorization. OWNERWRITE Writing requires owner authorization. GLOBALLOCK A write to index 0 locks the NVRAM area until the next TPM_Startup(ST_CLEAR) READ_STCLEAR A read with size 0 on the same index prevents further reading until the next TPM_Startup(ST_CLEAR) WRITE_STCLEAR A write with size 0 to the same index prevents further writing until the next TPM_Startup(ST_CLEAR) WRITEDEFINE A write with size 0 to the same index locks the NVRAM area permanently WRITEALL The value must be written in a single operation An example of a permission parameter is: --permissions="OWNERREAD|OWNERWRITE" SEE ALSO
tpm_nvread(8), tpm_nvwrite(8), tpm_nvrelease(8), tpm_nvinfo(8) REPORTING BUGS
Report bugs to <trousers-users@lists.sourceforge.net> TPM Management 2011-07-07 tpm_nvdefine(8)
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