Beefy Boxes and Bandwidth Generously Provided by pair Networks
Your skill will accomplish
what the force of many cannot
 
PerlMonks  

Re^3: Crypt::CBC and varying the key

by jimbojones (Friar)
on Mar 17, 2006 at 20:14 UTC ( #537554=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Crypt::CBC and varying the key
in thread Crypt::CBC and varying the key

Hi

It looks like you'll have to modify CBC.pm. In my version (2.14), the 'finish' method deletes the current IV.
delete $self->{'civ'}; delete $self->{'buffer'}; return $result; }
You'll have to prevent that from happening, and then add a method to return the current (last) IV, instead of the initial IV
sub get_civ { return $self->{civ}; }
I have no idea if or how this affects the security of the two messages.

Hope this helps, J

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://537554]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others exploiting the Monastery: (4)
As of 2016-06-26 23:06 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    My preferred method of making French fries (chips) is in a ...











    Results (332 votes). Check out past polls.