1tpm2_dictionarylockout(1) General Commands Manual tpm2_dictionarylockout(1)
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6 tpm2_dictionarylockout(1) - setup or clear dictionary-attack-lockout
7 parameters.
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10 tpm2_dictionarylockout [OPTIONS]
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13 tpm2_dictionarylockout(1) - setup dictionary-attack-lockout parameters
14 or clear dictionary-attack-lockout state, if any passwd option is miss‐
15 ing, assume NULL.
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18 · -s, –setup-parameters=SETUP_PARAMETERS: specifies the tool should op‐
19 erate to setup dictionary-attack-lockout parameters.
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21 · -c, –clear-lockout: specifies the tool should operate to clear dic‐
22 tionary-attack-lockout state.
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24 · -l, -lockout-recovery-time=LOCKOUT_TIME: specifies the wait time in
25 seconds before another TPM_RH_LOCKOUT authentication attempt can be
26 made after a failed authentication.
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28 · -t, –recovery-time=RECOVERY_TIME: specifies the wait time in seconds
29 before another DA-protected-object authentication attempt can be made
30 after max-tries number of failed authentications.
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32 · -n, –max-tries=MAX_TRYS: specifies the maximum number of allowed au‐
33 thentication attempts on DA-protected-object; after which DA is acti‐
34 vated.
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36 · -S, –input-session-handle=SESSION_HANDLE: Optional Input session han‐
37 dle from a policy session for authorization.
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40 This collection of options are common to many programs and provide in‐
41 formation that many users may expect.
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43 · -h, –help: Display the tools manpage. This requires the manpages to
44 be installed or on MANPATH, See man(1) for more details.
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46 · -v, –version: Display version information for this tool, supported
47 tctis and exit.
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49 · -V, –verbose: Increase the information that the tool prints to the
50 console during its execution. When using this option the file and
51 line number are printed.
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53 · -Q, –quiet: Silence normal tool output to stdout.
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55 · -Z, –enable-errata: Enable the application of errata fixups. Useful
56 if an errata fixup needs to be applied to commands sent to the TPM.
57 # TCTI ENVIRONMENT
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59 This collection of environment variables that may be used to configure
60 the various TCTI modules available.
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62 The values passed through these variables can be overridden on a
63 per-command basis using the available command line options, see the TC‐
64 TI_OPTIONS section.
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66 The variables respected depend on how the software was configured.
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68 · TPM2TOOLS_TCTI_NAME: Select the TCTI used for communication with the
69 next component down the TSS stack. In most configurations this will
70 be the TPM but it could be a simulator or proxy. The current known
71 TCTIs are:
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73 · tabrmd - The new resource manager, called tabrmd
74 (https://github.com/01org/tpm2-abrmd).
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76 · socket - Typically used with the old resource manager, or talking
77 directly to a simulator.
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79 · device - Used when talking directly to a TPM device file.
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81 · TPM2TOOLS_DEVICE_FILE: When using the device TCTI, specify the TPM
82 device file. The default is “/dev/tpm0”.
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84 Note: Using the tpm directly requires the users to ensure that con‐
85 current access does not occur and that they manage the tpm resources.
86 These tasks are usually managed by a resource manager. Linux 4.12
87 and greater supports an in kernel resource manager at “/dev/tpmrm”,
88 typically “/dev/tpmrm0”.
89
90 · TPM2TOOLS_SOCKET_ADDRESS: When using the socket TCTI, specify the do‐
91 main name or IP address used. The default is 127.0.0.1.
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93 · TPM2TOOLS_SOCKET_PORT: When using the socket TCTI, specify the port
94 number used. The default is 2321.
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97 This collection of options are used to configure the varous TCTI mod‐
98 ules available. They override any environment variables.
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100 · -T, –tcti=TCTI_NAME[:TCTI_OPTIONS]: Select the TCTI used for communi‐
101 cation with the next component down the TSS stack. In most configu‐
102 rations this will be the resource manager: tabrmd
103 (https://github.com/01org/tpm2-abrmd) Optionally, tcti specific op‐
104 tions can appended to TCTI_NAME by appending a : to TCTI_NAME.
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106 · For the device TCTI, the TPM device file for use by the device TCTI
107 can be specified. The default is /dev/tpm0. Example: -T de‐
108 vice:/dev/tpm0
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110 · For the socket TCTI, the domain name or IP address and port number
111 used by the socket can be specified. The default are 127.0.0.1 and
112 2321. Example: -T socket:127.0.0.1:2321
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114 · For the abrmd TCTI, it takes no options. Example: -T abrmd
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117 tpm2_dictionarylockout -c -p passwd
118 tpm2_dictionarylockout -s -n 5 -t 6 -l 7 -p passwd
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121 0 on success or 1 on failure.
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124 Github Issues (https://github.com/01org/tpm2-tools/issues)
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127 See the Mailing List (https://lists.01.org/mailman/listinfo/tpm2)
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131tpm2-tools SEPTEMBER 2017 tpm2_dictionarylockout(1)