Hi,
I have a shell script to build components of a product. The follow snippet will explain what I am doing.
# !/bin/sh
for choice in "$@" ;
do
case $choice in
"o") echo "Calling $choice" ; o ;;
"i") echo... (8 Replies)
i have been doing this script to match every line in a current log file (access_log) with strings that i list from a path (consist of 100 of user's name ex: meggae )..
and then make a directory of every string from the text file (/path/meggae/) --->if it matched..
then print every line from the... (3 Replies)
Hi ,
I have input file and i want to extract below strings
<msisdn xmlns="">0492001956</ msisdn> => numaber inside brackets
<resCode>3000</resCode> => 3000 needs to be extracted
<resMessage>Request time
getBalances_PSM.c(37): d out</resMessage></ns2:getBalancesResponse> => the word... (14 Replies)
i have a file1 with many lines. i have a script that will let me input a string. for example, APPLE. what i need to do is to copy all lines from file1 where i can find APPLE or any string that i specify and paste in on file 2
thanks in advance! (4 Replies)
Hi,
i want to know how to compare string of file with input string
im trying following code:
file_no=`paste -s -d "||||\n" a.txt | cut -c 1`
#it will return collection number from file
echo "enter number"
read " curr_no"
if ; then
echo " current number already present"
fi
... (4 Replies)
Hi
I have one thing I need advice on, and I don't know where to start so I have no sample code.
I want the user to provide input like: 1-3,6,7,9-11
When the input is like this, I want a string to be generated including all the numbers. In the example above, the string would look like:
1... (13 Replies)
I need to search a string for some specific text which is no big deal using grep. My problem is when the search fails to find the text. I need to add text like "na" when my search does not match.
I have tried this command but it does not work when I put the command in a loop in a bash script:
... (12 Replies)
I need to read a text file and insert a string every n lines, but also have the line counter restart when I come across a header string.
Line repeating working every 3 lines using code:
sed '0~3 s/$/\nINSERT/g' < INPUT/PATH/FILE_NAME.txt > OUTPUT/PATH/FILE_NAME.txt
I cannot seem to find... (1 Reply)
Discussion started by: Skonectthedots
1 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)