Hi,
I have a EDI data file ARROWTEST of size 18246 characters. And I want to insert some data after 4200 position in the file. How I can find the position 4200 in that file....Please advise.
Regards, (5 Replies)
Hi,
I have an urgent task here. I am required to sort a flat file based on multiple columns which are based on the character position in that line. I am restricted to use the character position instead of the space and sort +1 +2 etc to do the sorting.
I understand that there is a previous... (8 Replies)
Please help
Need a script which will do the following :
Search on fixed width file , go to position (25,2) which means 25th and 26th position, Find if there are any char in lower case:
For example 25,2 can be (9T) or (9w) or (Ww) or (wW)....The two positions can be numeric or alpha...no... (13 Replies)
Hi,
I need to add Pipe (|) at 5th and 18th position of all records a file. How can I do this?
I tried to add it at 5th position using the below code. It didnt work. Please help!!!
awk '{substr($0,5,1) ~ /|/}{print}' $input_file > $temp_file (1 Reply)
I'm trying to write a small shell script/command to insert the contents of one file into another file at a position marked with a given text string. It's not necessarily at the top or bottom of the file so I can't just use cat to cat the files together.
I think probably sed with the r option is... (5 Replies)
Hi
Can somebody help me with solution for this PLEASE?
I have a flat file and need to insert delimiters at fixed positions in all the lines so that I can easily convert into EXCEL with columns defined as per their width.
For Example
Here is the file
{
kkjhdhal
sdfewss
sdtereetyw... (7 Replies)
Hi,
Let say I have a file which has around 400 fields.
SampleFile
=========
PATIENTID|FACILITY|................|TIME_LAST_VISITED_BY_MD|.....|STATUS|
How is it possible to find out which field is TIME_LAST_VISITED_BY_MD?fro example by seeing the above structure we can saw FACILITY... (5 Replies)
Hi ,
I have a file which has line similar to below
13123324234234234234234234234234234
3454546456dfhgfhgh454645654asdasfsdsddfgdgdfg
345345345mnmnbmnb346mnb4565464564564645645
Not for each line for specific position I need to insert some '|'
Positions are fixed. Like 3,5,9,11
So the... (5 Replies)
Hi,
I have a tab delimited flat file, for example shown below
Name Desg Loc
a b c
d e fI want to insert an empty column inbetween the column Desc and Loc, the result should be like shown below:
Name LName Desg Loc
a b c
d e ... (6 Replies)
Hi All,
how to insert a '#' in the first position of all the files based on a certain condition.
I tried this:
cat /bin/user/input_file.txt | while read a
do
b=`sed 's/.*song=good.*/\#&/g' $a `
echo $b > /bin/user/new/output_file.txt
done
input_file.txt has list of names of 10... (5 Replies)
Discussion started by: anand787
5 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)