Update for 09-11-21 14:45

2021-11-09 14:45:01 -05:00 · 2021-11-09 14:45:01 -05:00 · 5d644fa6a6
commit 5d644fa6a6
parent f88760b21f
2 changed files with 14 additions and 0 deletions
--- a/tech/Affine.wiki
+++ b/tech/Affine.wiki
@ -0,0 +1,13 @@
+= Affine =
+
+Affine cipher is a type of [[substitution]] cipher.
+
+The cipher is of model
+
+f(x) = ax + b mod 26
+
+Where x is some number corresponding to a letter, 0-25. a and b are variables.
+
+To decipher, the formula is of form
+
+f(y) = a^-1(y - b) mod 26
--- a/tech/security.wiki
+++ b/tech/security.wiki
@ -9,6 +9,7 @@ Hiding information
 === Ciphers ===

 * [[substitution|Substitution]] 
+* [[Affine]]

 === Math for Crypto ===