Hi All,
I'm writing a script that provides a menu to manipulate records. I'm having a problem, however. The first option I'm writing is simply to display all of the records in a supplied file.
The supplied file ('records') currently contains sample data, this data is:
... (3 Replies)
Hello,
I try to write a shell script that would list all files on a directory and stop when it finds the first item specified on a find or ls command.
How can I tell to the find or ls command to stop when it finds the first ".doc" file for example ?
Thank you (7 Replies)
Dear all,
I have encountered some problem here. I prompt the user for input and store it into a data file, eg. key in name and marks so the data file will look like this
andrew 80
ben 75
and the next input is carine 90. So the problem here is i want to print... (2 Replies)
Good evening! Trying to make a shell script to parse log file and show only required information.
log file has 44 fields and alot of lines, each columns separated by ":".
log file is like:
first_1:3:4:5:6:1:3:4:5:something:notinterested
second_2:3:4:3:4:2
first_1:3:4:6:6:7:8
I am interested... (3 Replies)
I have the below script
i am getting the csv in garbled format.Please suggest the changes.
SUNOS
#######################################################################
####MAIN SCRIPT
#######################################################################
today=`date "+%m-%d-%Y ... (3 Replies)
I need to parse .conf file in Unix system to get output from the snippets like below :
; generated by mod_identity
exten => int,1,GoSub(mdc_template-3,s,1)
exten => int,n(next_380),Return()
; default action for busy
exten => ext,1,GoSub(mdc_template-3,s,1)
exten => ext,n,Set(PRI_CAUSE=17)... (2 Replies)
Hello,
I have some tab delimited text data,
file: final_temp1
aname val
NAME;r'(1,) 3.28584
r'(2,)<tab>
NAME;r'(3,) 6.13003
NAME;r'(4,) 4.18037
r'(5,)<tab>
You can see that the data is incomplete in some cases. There is a trailing tab after the first column for each incomplete row. I... (2 Replies)
Dear all,Zabbix version : 2.4 (yes, I know, upgrading soon - honest)
Server OS version : CentOS 6, 64-bit (CentOS 7 with the Zabbix upgrade)I've got a large log file that I would like to read by an external process. It's basically the same as reading the item value on a web-page. I have... (5 Replies)
Hi - I want to interrogate information about my poker hands, sessions are all recorded in a text file in a particular format. Each hand starts with the string <PokerStars> followed by a unique hand reference and other data like date/time. There is then all the information about each hand. My first... (5 Replies)
Hello,
I have a src code file where I need to uncomment many lines.
The lines I need to uncomment look like,
C CALL l_r(DESNAME,DESOUT, 'Gmax', ESH(10), NO_APP, JJ)
The comment is the "C" in the first column. This needs to be deleted so that there are 6 spaces preceding "CALL".... (7 Replies)
Discussion started by: LMHmedchem
7 Replies
LEARN ABOUT CENTOS
tpm_quote_tools
TPM QUOTE TOOLS(8) TPM QUOTE TOOLS(8)NAME
TPM Quote Tools
PROGRAMS
tpm_mkuuid, tpm_mkaik, tpm_loadkey, tpm_unloadkey, tpm_getpcrhash, tpm_updatepcrhash, tpm_getquote, tpm_verifyquote
DESCRIPTION
TPM Quote Tools is a collection of programs that provide support for TPM based attestation using the TPM quote operation.
A TPM contains a set of Platform Configuration Registers (PCRs). In a well configured machine, some of these registers are set to known
values during the boot up process or at other times. For example, a PCR might contain the hash of a boot loader in memory before it is
run.
The TPM quote operation is used to authoritatively verify the contents of a TPM's Platform Configuration Registers (PCRs). During provi-
sioning, a composite hash of a selected set of PCRs is computed. The TPM quote operation produces a composite hash that can be compared
with the one computed while provisioning.
To use the TPM quote operation, keys must be generated. During provisioning, an Attestation Identity Key (AIK) is generated for each TPM,
and the public part of the key is made available to entities that validate quotes.
The TPM quote operation returns signed data and a signature. The data that is signed contains the PCRs selected for the operation, the
composite hash for the selected PCRs, and a nonce provided as input, and used to prevent replay attacks. At provisioning time, the data
that is signed is stored, not just the composite hash. The signature is discarded.
An entity that wishes to evaluate a machine generates a nonce, and sends it along with the set of PCR used to generate the composite PCR
hash at provisioning time. For this use of the TPM quote operation, the signed data is ignored, and the signature returned is used to val-
idate the state of the TPM's PCRs. Given the signature, the evaluating entity replaces the nonce in the signed data generated at provi-
sioning time, and checks to see if the signature is valid for the data. If so, this check ensures the selected PCRs contain values that
match the ones measured during provisioning.
A typical scenario for an enterprise using these tools follows. The tools expect AIKs to be referenced via one enterprise-wide Universally
Unique Identifier (UUID). The program tpm_mkuuid creates one.
For each machine being checked, an AIK is created using tpm_mkaik. The key blob produced is bound to the UUID on its machine using
tpm_loadkey. The public key associated with the AIK is sent to the entities that verify quotes. Finally, the expected PCR composite hash
is obtained using tpm_getpcrhash. When the expected PCR values change, a new hash can be generated with tpm_updatepcrhash.
The program to obtain a quote, and thus measure the current state of the PCRs is tpm_getquote. The program that verifies the quote
describes the same PCR composite hash as was measured initially is tpm_verifyquote.
SEE ALSO tpm_mkuuid(8), tpm_mkaik(8), tpm_loadkey(8), tpm_unloadkey(8), tpm_getpcrhash(8), tpm_updatepcrhash(8), tpm_getquote(8), tpm_verifyquote(8)
Oct 2010 TPM QUOTE TOOLS(8)