OpenPKG CVS Repository
http://cvs.openpkg.org/
____________________________________________________________________________
Server: cvs.openpkg.org Name: Thomas Lotterer
Root: /e/openpkg/cvs Email: [EMAIL PROTECTED]
Module: openpkg-re Date: 19-Apr-2004 09:52:56
Branch: HEAD Handle: 2004041908525600
Modified files:
openpkg-re news.txt
Log:
flush typofixing and improved explanation around UUIDs
Summary:
Revision Changes Path
1.42 +19 -15 openpkg-re/news.txt
____________________________________________________________________________
patch -p0 <<'@@ .'
Index: openpkg-re/news.txt
============================================================================
$ cvs diff -u -r1.41 -r1.42 news.txt
--- openpkg-re/news.txt 23 Mar 2004 15:56:34 -0000 1.41
+++ openpkg-re/news.txt 19 Apr 2004 07:52:56 -0000 1.42
@@ -2,7 +2,7 @@
General Note
============
- o $Revision: 1.41 $. The most recent update of this file can be
+ o $Revision: 1.42 $. The most recent update of this file can be
downloaded from http://cvs.openpkg.org/openpkg-re/news.txt
o This file news.txt file talks about new features and major
@@ -198,10 +198,11 @@
multicast address, as descibed below.
UUID_INSTANCE is based on instance related information like prefix
- and user ids. All installations having exactly the same paramters
+ and user ids. All installations having exactly the same parameters
will have the same UUID. This ID is updated during installation,
on every system startup (rc.openpkg %start) and daily (rc.openpkg
- %daily). Can be used to detect if a
+ %daily). Can be used to identify groups of instance twins across
+ hosts.
UUID_PLATFORM is based on host name and network information. All
installations having exactly the same paramters will have the same
@@ -214,7 +215,7 @@
- which data is used to create the UUID
- where it is send to
- - how much information can be recovered by the recipient
+ - how much privacy is exposed to the recipient
We provide a way for the user to reproduce how the UUIDs are
generated. Full transparency here.
@@ -231,8 +232,13 @@
The UUID needs of OpenPKG triggered the creation of OSSP uuid which
is included in the bootstrap. To reproduce how the UUIDs were
- generated and to see which information can be decoded. The user
- might run one of two alternatives:
+ generated and to see which information is used to create the input
+ based UUIDs the user might run one of two alternative commands
+ listed below. It should be pointed out that the algorithm to create
+ a UUID from input is a message digest (MD5) function which inhibits
+ extraction of the original information from the UUID. The most
+ sophisticated application of a message digest is to use it for
+ equal/not equal comparison with another UUID.
$ %{l_prefix}/etc/rc openpkg info
$ %{l_prefix}/bin/openpkg uuid info
@@ -267,15 +273,13 @@
UUID_PLATFORM: 61a4580d-b45c-388f-a9b9-9887780a8b2d
It should be pointed out that time based UUID Registry can never be
- reproduced completely. That's what UUIDs were invented for. However,
- you can manually reset to zero and update with multicast to hide the
- node address. This change is visible. The input based UUIDs Instance
- and Platform can be reproduced completely. However, the algorithm to
- create a UUID from input is a message digest (MD5) function which
- does not allow to extract the original information from the UUID. At
- best it can be used to compare with another UUID created with known
- input. More details can be learned by running the following UUID
- related commands with the --verbose option.
+ reproduced completely. That's what UUIDs were originally invented
+ for and works as designed. It is possible to reset it to zero and
+ update with multicast to hide the node address. The input based
+ UUIDs Instance and Platform can be reproduced completely. More
+ details regarding extraction of information can be learned by
+ running the following UUID related commands with the --verbose
+ option.
- reset UUID by zeroing out data. Useful before update or to prepare
a machine before cloning the hard disk drive.
@@ .
______________________________________________________________________
The OpenPKG Project www.openpkg.org
CVS Repository Commit List [EMAIL PROTECTED]
