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added notes about security

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Guido van Rossum 1995-06-21 02:19:55 +00:00
parent 54175f7cbe
commit 6ea3f92109
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Demo/pdist/README
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@ -1,6 +1,8 @@
Filesystem, RCS and CVS client and server classes
=================================================
*** See the security warning at the end of this file! ***
This directory contains various modules and classes that support
remote file system operations.
@ -23,6 +25,8 @@ RCSProxy.py RCS interface classes
client.py Client class
server.py Server class
security.py Security mix-in class (not very secure I think)
cmdfw.py CommandFrameWork class
(used by rcvs, should be used by rrcs as well)
@ -82,3 +86,15 @@ instantiate a client.
The modules client and server should probably be renamed to Client and
Server in order to match the class names.
*** Security warning: this version requires that you have a file
$HOME/.python_keyfile at the server and client side containing two comma-
separated numbers. The security system at the moment makes no guarantees
of actuallng being secure -- however it requires that the key file
exists and contains the same numbers at both ends for this to work.
(You can specify an alternative keyfile in $PYTHON_KEYFILE).
Have a look at the Security class in security.py for details;
basically, if the key file contains (x, y), then the security server
class chooses a random number z (the challenge) in the range 10..100000
and the client must be able to produce pow(z, x, y) (i.e. z**x mod y).