> John,
>
> I think this was smashingly on topic and probably the most
> important crypto thing discussed in months.

> Jean-François Michaud wrote:

>> DarkProtoman wrote:

>>> Jean-François Michaud wrote:

>>>> DarkProtoman wrote:

>>>>> I'm writing an enigma-like cipher w/five rotors where adjacent rotors
>>>>> rotate opposite direction of their neighbors and they have variable
>>>>> stepping in which they step a number of times equal to the position of
>>>>> the character they're on plus one, starting from zero, ie. in FOOD, F's
>>>>> position would be zero, and the rotors would step once, on O they would
>>>>> step twice, etc. Keeping w/ the fact that the first rotor would step
>>>>> after every character, the second rotor would step when the first one
>>>>> stepped 36 times,etc. How much more security would that give me over a
>>>>> normal three rotor machine.

>>>>
>>>> Hello DarkProtoman,
>>>>
>>>> I'm actually working on something similar to you right now. It's funny
>>>> how Enigma like machines are resurfacing :). 5 rotos with 27 characters
>>>> (27 cogs) will give you 14348907 possible states to start from. If an ...

> DarkProtoman wrote:

>> Jean-François Michaud wrote:

>>> DarkProtoman wrote:

>>>> I'm writing an enigma-like cipher w/five rotors where adjacent rotors
>>>> rotate opposite direction of their neighbors and they have variable
>>>> stepping in which they step a number of times equal to the position of
>>>> the character they're on plus one, starting from zero, ie. in FOOD, F's
>>>> position would be zero, and the rotors would step once, on O they would
>>>> step twice, etc. Keeping w/ the fact that the first rotor would step
>>>> after every character, the second rotor would step when the first one
>>>> stepped 36 times,etc. How much more security would that give me over a
>>>> normal three rotor machine.

>>>
>>> Hello DarkProtoman,
>>>
>>> I'm actually working on something similar to you right now. It's funny
>>> how Enigma like machines are resurfacing :). 5 rotos with 27 characters
>>> (27 cogs) will give you 14348907 possible states to start from. If an
>>> attacker had the algorithm, knowing how the rotors move, he could ...

> "John E. Hadstate" hotmail.com> writes:

>> Yes, one key point here is that I fully tested both
>> Outlook 2000 and
>> Outlook Express more than a year ago and both correctly
>> encrypted
>> with 3DES. I believe the change happened sometime in the
>> last 6 (?)
>> weeks, possibly as a result of upgrading (?) to IE7 or
>> perhaps as a
>> result of one of Microsoft's automatic updates.

>
> Weird, I just noticed this thread and wonder what's up.
>

>> IE7's help window reports its cipher strength as 128-bit.
>> Connecting to a financial services site with https shows
>> another
>> interesting development. If you clicked on the Padlock
>> Icon, IE6 ...

> Jean-François Michaud wrote:

>> DarkProtoman wrote:

>>> I'm writing an enigma-like cipher w/five rotors where adjacent rotors
>>> rotate opposite direction of their neighbors and they have variable
>>> stepping in which they step a number of times equal to the position of
>>> the character they're on plus one, starting from zero, ie. in FOOD, F's
>>> position would be zero, and the rotors would step once, on O they would
>>> step twice, etc. Keeping w/ the fact that the first rotor would step
>>> after every character, the second rotor would step when the first one
>>> stepped 36 times,etc. How much more security would that give me over a
>>> normal three rotor machine.

>>
>> Hello DarkProtoman,
>>
>> I'm actually working on something similar to you right now. It's funny
>> how Enigma like machines are resurfacing :). 5 rotos with 27 characters
>> (27 cogs) will give you 14348907 possible states to start from. If an
>> attacker had the algorithm, knowing how the rotors move, he could
>> probably brute force to try and figure out what initial state the ...

>I'm writing an enigma-like cipher w/five rotors where adjacent rotors
>rotate opposite direction of their neighbors and they have variable

>stepping in which they step a number of times equal to the position of
>the character they're on plus one, starting from zero, ie. in FOOD, F's
>position would be zero, and the rotors would step once, on O they would
>step twice, etc. Keeping w/ the fact that the first rotor would step
>after every character, the second rotor would step when the first one
>stepped 36 times,etc. How much more security would that give me over a
>normal three rotor machine.

>First off, thanks to the peeps in the other thread. Nice to know there
>is some respectful folk around "on the Net." I was getting flack from
>the peanut gallery but it's died down and nothing serious...

> The goal of CFB mode is privacy. Not "garbling the file when a bit
> error occurs."