Re: Regarding Digi Secret.
Hi Data,
>I was wondering of the S-Boxes used in digi secret?
>Did tamos make them or took it frm an ANSI/ISO standard to which the ns@ put a hidden
>trap door?
AES was implemented as per the standard (Federal Information Processing Standards Publications). CAST was implemented as per the RFC ([url]http://www.cis.ohio-state.edu/cgi-bin/rfc/rfc2*44.html[/url]), Blowfish and Twofish were implemented as per the Schneier's publications. If you believe that one of these ciphers contains a hidden trap door, you can always use a different one. We haven't seen a reliable evidence confirming that AES contains any back doors. If you can point us to a serious publication by a well-know cryptanalyst proving this theory, that would be very interesting for everyone.
>Also does digi secret * st encrypt and compress the file or *st compress and then encrypt
>the file?
First compress then encrypt, of course. It's totally useless to compress encrypted data.
>
>Also as said what protocol is implemented to prevent the man-in-the-middle-attack?
MITM attacks can be mounted against public-key algorithms, such as DH key exchange. In brief, they can be thwarted by the usage of signatures. DigiSecret uses only symmetric algorithms.
>
>Also what r the modes used for encrypting ?ecb/cbc/cfb?
CBC.
>Blow fish, cast etc...
>are publisised algorithms.
>
>Would u like to publish the sequence in which the algorithm of digi secret to the public.
Sorry, I don't understand. What sequence?
>This is just a request.
>If u dont think this post should be here pls moderate it.
Why, a good posting!
>I WISH They had a instruction/help page in english.
>I dunno german.
German??? DigiSecret comes with a help file in English. The German help file is available too, but only as an optional download.
Regards,
Otto