Hello, I would like to know if there was any way I can change the default permissions for new files being generated within a certain directory.
Would I need to have the same permissions set at the directory level as for the files being generated in it.
Regards,
Rdgblues (1 Reply)
Hi,
Within a SQL file i am calling 5 shell scripts in back ground and redirecting their outputs to different log files in a specific directory.
Now when I observed is, the log files are created with different permissions even though i did not do any thing specific.
For example in... (3 Replies)
Hi,
Within a SQL file i am calling 5 shell scripts in back ground and redirecting their outputs to different log files in a specific directory.
Now when I observed is, the log files are created with different permissions even though i did not do any thing specific.
For example in... (2 Replies)
Hi,
I am really new to unix, any help is much appreciated.
I need to change permissions of all files under several subdirectories to 700 but keep directories readable (755). Why ? Because I need a FTP user to only list his files and can't read them. But to browse to subfolder, the directories... (3 Replies)
Hi guys,
I have one problem.
I need collect the list files along with the file permissions in all directories in one server.
Is their any easy way to collect using any commands or any scripts?
Advance Thanks
:) (2 Replies)
Hi everyone,
I am using mac os x 10.6, and I just copied over a project from a machine with 10.5... And I noticed my ls color is very funky in this directory... I found that my permissions are all messed up, and am wondering if there is a way to recursively fix permissions?
This is how they... (3 Replies)
Hello all;
I have a question based on a ticket I have from a user... K...first some background...this client needed a generic user setup to allow them to ftp files; user is called "msifpt"...so here's what they want to do now with this account:
1. Client will use the user id ‘msiftp'... (1 Reply)
Hi!
I have a dir in a server, that receives files with the wrong permissions, so I decide to put on a cron entry that changes its permitions, but because of the time gap, not all of them get changed.
What I did was the following:
... (14 Replies)
Hello,
I have a main directory called /test123
/test123 has lot of sub-directories and files.
drwxr-x--- 21 root system 4096 Jan 25 10:20 /test123
Here, "other" does not have any access to /test123 folder.
How can we provide read-only access to others on /test123... (1 Reply)
Discussion started by: aaron8667
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)