Affine Cipher Help

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Affine Cipher Help
Topic Started: Oct 18 2006, 01:13 PM (327 Views)
namelessguy	Oct 18 2006, 01:13 PM Post #1
Just registered Posts: 3 Group: New Members Member #68 Joined: September 25, 2006	I have a load of cipher text in the form of Quote: 336108:587118:397155:184009:95607 Now I know a few of things 1) The ciphertext was encrypted using an affine cipher, 2) each number is an encrypted digraph and 3) n=847 The stumbling block for me now is turning the numbers into letters. I have a program to get the encrypted letters out of the encrypted digraph eg for 336108, A=396 B=696. I just can't for the life of me figure out what the alphabet is. If n=26 then I know it'd just be A-Z but 847, I don't even know where to begin with this. If anyone has any suggestions I'd be very grateful.



loki	Oct 18 2006, 02:59 PM Post #2
Advanced Member Posts: 87 Group: Members Member #48 Joined: April 28, 2006	Never attempted an affine, but I have read about it. This is the only help I could offer: affine
	c(x) = 3x3 + x2 + x + 2; Find the inverse


anonymousguy	Nov 12 2006, 11:10 PM Post #3
Just registered Posts: 1 Group: New Members Member #111 Joined: November 12, 2006	Sorry Leigh Power, No cheating... plus this code has been cracked. Muhahaha!



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