My code below is supposed to find which company had the most business and then print the appropriate fields from another file which are the companies ID number and name. I can loop through awk and display all the total amount of business for each company but I need help in only printing out the... (1 Reply)
Hi,
I have this input file called ttbitnres (which is catenated and sorted):-
8 0.4444 213
10 0.5555 342
11 0.5555 321
12 0.5555 231
13 0.4444 400
My code is at :-
#!/bin/bash
echo -e Version "\t" Number of Pass "\t" Number of Fail "\t" Rank Position "\t"Min "\t" Max... (1 Reply)
I am reading a cpp file thru shell script . There are many fuctions inside the cpp file
eg
pvvd_fncn_name1
{
..... something
}
pvvd_fncn_name2
{
..... something
}
what I require is a method to find the first opening brace and the coresponding last brace and search... (2 Replies)
Hi, i have a file with numbers in it and i was wondering if there's a script i could use to find the max number and have that printed to a new file?
example a.txt
18
26
47
34
27
so find the max number in a.txt and print it to b.txt.
Thanks! (17 Replies)
Hi Folks.Just out of interest does anyone know if their is a maximum number of variables that korn shell supports and if so how do I query what it is?Cheers (1 Reply)
Hi, I would just like to know how to get the file with the max filename on a directory and get rid of all the others. For example, in directory A:/ i have the ff files:
APPLE2001
APPLE2002
APPLE2003
GRAPE2004
what I want to get is the max in files whose filenames start with APPLE*,... (4 Replies)
Hi
I have a list of 2000 records with multiple entries and I want to get the max size for each entry
ABC 1
ABC 2
ABC 3
ABC 4
DEF 1
DEF 2
DEF 2
DEF 2
DEF 2
... (9 Replies)
Hi,
I have the below text:
16:00 0.50
16:00 0.30
16:00 0.00
16:00 0.00
16:00 0.30
16:01 0.00
16:01 0.30
I want to find the max of the 2nd column grouping by the values in the 1st column using awk. So
16:00 0.50
16:01 0.30
I have tried (3 Replies)
Discussion started by: satishrao
3 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)