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The rail fence
1.
What is this
line doing? What are the two 26s for?
2.
This is where
we use the ApplyShifttoASCIICodeForCharacter function To get the encrypted text. How do we decrypt?
3.
The “rail fence” T
t a Jh i h r M oi s e m r ns y e s Size = 4
4.
The “rail fence” T
t a Jh i h r M oi s e m r ns y e s Size = 4
5.
The “rail fence” T h i s i s t h e a r m y M r J o n e s Size
= 4
6.
The “rail fence” T
t a J h i h r M o i s e m r n s y e s Size = 4
7.
How the algorithm
works 2 Counters T t a Jh i h r M oi s e m r ns y e s Counter one starts at the beginning and loops once only Counter two starts at counter one and loops to the end
8.
T t a
Jh i h r M oi s e m r ns y e s
9.
T t a
J h i h r M oi s e m r ns y e s For Count1 = 1 To SizeOfRailFence While Count2 < OriginalText.Length Count2 = Count2 + SizeOfRailFence
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