Hi friend,
pls let me know ..
1)How to fine which UNIX machine
Ex . whether it is 32 bit processor OR 64 bit processor ..
2) HP-ux is machine or Architectural ?
pls replay as soon as possible ..
Thanks.. (3 Replies)
I am trying to find the number of caches on a machine programatically.
#include <stdio.h>
#include <malloc.h>
int main(void)
{
int *ptr,*ptr1,i,j;
j=0;
i=1;
printf("Changing allocation with brk()\n");
while(1)
{
for(j=0;j<i;j++)
{
ptr =... (1 Reply)
Hi all,
Im new to linux... Im in need to write a shell script to check wthr JRE in linux machine... Wtz de best way to find thru BASH?? Plz help me out to solve this issue...
Thanks (3 Replies)
Hi All,
URGENT - Please help me form a scipt for this:
I need the LATEST file from a dir on REMOTE machine to be SCP'd to a dir on local machine. (and I need to execute this from local server)
I know that the below cmd is used to find the LATEST file from a dir. But this command is not... (3 Replies)
hi,
I can ping into another unix machine, but I cannot seem to access a certain application. I think it might be because I am now allowed to connect to the port (because of firewall configuration).
How can I find out if I have access to a port on another machine?
thanks (2 Replies)
Hi,
I want to know if there is any command which will tell me if an AIX machine is a LPar or not. I am using "lparstat -i" but it does not work on all AIX machines. Is there any generic command by whose output I will come to know if it is an LPar or not?
Please help.
Thanks,
Vineet (3 Replies)
Hi all,
I logged in one machine. I want to find one file in other machine. However, I don't know exactly which and where the machine is. I used nmap command to search all available hosts in this network range. I got two available machines through this action. But I still can't find the file I want... (8 Replies)
Hi,
i would like to know how can i find , in a client machine , the nim server.
the nim server that this machine have , if the machine have it
Thanks :confused: (1 Reply)
Hi guys ..
How to can I know the HBA WWN address in the windows machine ?
Pls advice with command ... (1 Reply)
Discussion started by: roooooot
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)