Difference between revisions of "Enigma/primer"
m (→Tick 1) |
m (→Tick 1) |
||
| Line 33: | Line 33: | ||
====Tick 1==== | ====Tick 1==== | ||
Wheel 1 is ticked forward on every encryption/decryption. See below. When the Notch - show in red below - ticks from 7 to 0 it will Tick the next Wheel. See Tick 2. | Wheel 1 is ticked forward on every encryption/decryption. See below. When the Notch - show in red below - ticks from 7 to 0 it will Tick the next Wheel. See Tick 2. | ||
| − | <source lang=cli> | + | |
| + | {| | ||
| + | |--bgcolor="#DDDDDD" | ||
| + | | align="center" |'''Wheel positions before Tick''' | ||
| + | |- | ||
| + | |<source lang=cli> | ||
Input 0, 1, 2, 3, 4, 5, 6, 7 | Input 0, 1, 2, 3, 4, 5, 6, 7 | ||
Wheel 1 <notice>2, 7, 1, 5, 6, 3, <error>0</error>, 4</notice> | Wheel 1 <notice>2, 7, 1, 5, 6, 3, <error>0</error>, 4</notice> | ||
| Line 41: | Line 46: | ||
Reverse wheel 1(output) 6, 2, 0, 5, 7, 3, 4, 1 | Reverse wheel 1(output) 6, 2, 0, 5, 7, 3, 4, 1 | ||
</source> | </source> | ||
| − | <source lang=cli> | + | |--bgcolor="#DDDDDD" |
| + | |align="center" |'''Wheel positions after Tick''' | ||
| + | |- | ||
| + | |<source lang=cli> | ||
Input 0, 1, 2, 3, 4, 5, 6, 7 | Input 0, 1, 2, 3, 4, 5, 6, 7 | ||
Wheel 1 <notice>4, 2, 7, 1, 5, 6, 3, <error>0</error></notice> | Wheel 1 <notice>4, 2, 7, 1, 5, 6, 3, <error>0</error></notice> | ||
| Line 49: | Line 57: | ||
Reverse wheel 1(output) <notice>2, 0, 5, 7, 3, 4, 1, 6</notice> | Reverse wheel 1(output) <notice>2, 0, 5, 7, 3, 4, 1, 6</notice> | ||
</source> | </source> | ||
| + | |- | ||
| + | |} | ||
| + | |||
====Tick 2==== | ====Tick 2==== | ||
Wheel 1's Notch is ticked from 7 to 0 it will Tick wheel 2 forward. The reflector will stay stationary. | Wheel 1's Notch is ticked from 7 to 0 it will Tick wheel 2 forward. The reflector will stay stationary. | ||
Revision as of 12:20, 5 December 2010
Contents
The Wheels
The Wheels can be installed in the Enigma in any sequence. If there are five different Wheels in total and the Enigma uses three Wheels. The total number of Wheel combinatins would be <math>5*4*3=60</math>
The software enigma
In the software Enigma you would need some random Wheels and a Random Rotor Reftlector. For examle this three bit Enigma.
Three bit Example
Crypt
In the example below if the input=2 its send to Wheel 1 position 2 which output will be 1 and that's input for Wheel 2 which outputs 0 to the Reflector that outputs 7 as input for Reverse Wheel 2 which output's 2 as input for Reverse wheel 1 which Output 0 as the encrypted message.
- 2->1->0->7->2->0
Input 0, 1, <notice>2</notice>, 3, 4, 5, 6, 7
Wheel 1 2, 7, <notice>1</notice>, 5, 6, 3, 0, 4
Wheel 2 5, <notice>0</notice>, 7, 2, 1, 6, 4, 3
Reflector <notice>7</notice>, 4, 6, 5, 1, 3, 2, 0
Reverse wheel 2 1, 4, 3, 7, 6, 0, 5, <notice>2</notice>
Reverse wheel 1(output) 6, 2, <notice>0</notice>, 5, 7, 3, 4, 1Decrypt
Input <notice>0</notice>, 1, 2, 3, 4, 5, 6, 7
Wheel 1 <notice>2</notice>, 7, 1, 5, 6, 3, 0, 4
Wheel 2 5, 0, <notice>7</notice>, 2, 1, 6, 4, 3
Reflector 7, 4, 6, 5, 1, 3, 2, <notice>0</notice>
Reverse wheel 2 <notice>1</notice>, 4, 3, 7, 6, 0, 5, 2
Reverse wheel 1(output) 6, <notice>2</notice>, 0, 5, 7, 3, 4, 1The wheel notch
Each time a letter/digit is encrypted/decrypted - same process - the Wheels are ticked forward.
Tick 1
Wheel 1 is ticked forward on every encryption/decryption. See below. When the Notch - show in red below - ticks from 7 to 0 it will Tick the next Wheel. See Tick 2.
| Wheel positions before Tick |
Input 0, 1, 2, 3, 4, 5, 6, 7
Wheel 1 <notice>2, 7, 1, 5, 6, 3, <error>0</error>, 4</notice>
Wheel 2 5, 0, 7, 2, 1, 6, <error>4,</error> 3
Reflector 7, 4, 6, 5, 1, 3, 2, 0
Reverse wheel 2 <notice>1, 4, 3, 7, 6, 0, 5, 2</notice>
Reverse wheel 1(output) 6, 2, 0, 5, 7, 3, 4, 1 |
| Wheel positions after Tick |
Input 0, 1, 2, 3, 4, 5, 6, 7
Wheel 1 <notice>4, 2, 7, 1, 5, 6, 3, <error>0</error></notice>
Wheel 2 5, 0, 7, 2, 1, 6, <error>4</error>, 3
Reflector 7, 4, 6, 5, 1, 3, 2, 0
Reverse wheel 2 1, 4, 3, 7, 6, 0, 5, 2
Reverse wheel 1(output) <notice>2, 0, 5, 7, 3, 4, 1, 6</notice> |
Tick 2
Wheel 1's Notch is ticked from 7 to 0 it will Tick wheel 2 forward. The reflector will stay stationary.
Input 0, 1, 2, 3, 4, 5, 6, 7
Wheel 1 <notice>4, 2, 7, 1, 5, 6, 3, <error>0</error></notice>
Wheel 2 5, 0, 7, 2, 1, 6, <error>4</error>, 3
Reflector 7, 4, 6, 5, 1, 3, 2, 0
Reverse wheel 2 1, 4, 3, 7, 6, 0, 5, 2
Reverse wheel 1(output) <notice>2, 0, 5, 7, 3, 4, 1, 6</notice>Input 0, 1, 2, 3, 4, 5, 6, 7
Wheel 1 <notice><error>0</error>, 4, 2, 7, 1, 5, 6, 3</notice>
Wheel 2 <notice>3, 5, 0, 7, 2, 1, 6, <error>4</error></notice>
Reflector 7, 4, 6, 5, 1, 3, 2, 0
Reverse wheel 2 <notice>2, 1, 4, 3, 7, 6, 0, 5</notice>
Reverse wheel 1(output) <notice>6, 2, 0, 5, 7, 3, 4, 1</notice>