At 11.59 25/03/98 +0300, you wrote:
>Hi All
>
>We are curently doing a software project for a customer and we are working
>On-Site, we have however reason to suspect that some people are trying to
>enter our computers when we are not there (once 1 pc had been opened and not
>closed well etc)(Paranoid ? who me :-)
>
>What we are looking for is some kind of nice simple utility to encrypt our
>project directories with source code when we are off-site
>
>If anyone knows about such a product - preferably shareware, freeware :-)
>with a nice tight 128/64  bit encryption it would be great
>
>TIA
>
>Peter Neubert
>Mauritius
>
>

A small table that can clean up some dubious on crack time:

                 | Budget  | Instrument |  40 Bit Key  | 56 Bit Key     |
-----------------|---------|------------|--------------|----------------|
simple Hacker    |  none   |    PC      |  1 week      | intractable    |
                 |  400 $  |   FPGA     |  5 hours     | 38 years       |
-----------------|---------|------------|--------------|----------------|
Small company    | 10000 $ |   FPGA     |  12 min.     | 556 day (5 K$) |
-----------------|---------|------------|--------------|----------------|
Middle company   | 300 K$  |   FPGA     |  24 sec.     | 19 day (5 K$)  |
                 |         |   ASIC     |  0,18 sec.   | 3 hours (38 $) |
-----------------|---------|------------|--------------|----------------|
Big Company      | 10 M$   |   FPGA     |  0,7 sec.    | 13 hours (5 K$)|
                 |         |   ASIC     |  5 msec.     | 6 min. (38 $)  |
-----------------|---------|------------|--------------|----------------|
Government       | 300 M$  |    ASIC    |  0,2 ms      | 12 s           |
-----------------|---------|------------|--------------|----------------|

USE ALWAYS >=128 bit keys with a good algorithm (triple-DES, IDEA, SHA,
...) for symmetric key algorithm.
USE ALWAYS >=2048 bit keys with pubblic key algorithm (ex. RSA).



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Alboni Giorgio
Faenza (Ra) ITALY
E-Mail: rac1337@racine.ravenna.it

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(Last Update: 15/03/1998)
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