Este no esta como la version del libro ya que tenia cambios mas actualizados como diagnosticas y cambio en el ejemplo

README-en.md

 
 The Caesar cipher is considered a weak encryption mechanism because it can easily be deciphered by using frequency analysis on the ciphered message. For example, we can use the fact that letter ‘e’ is the most frequent letter in most texts. If we find the most frequent letter in a ciphered text it very probably corresponds to the letter that was substituted by ‘e’. With this information we can compute the displacement that was used and decipher the rest of the message.
 
-PONER PREGUNTAS DIAGNOSTICAS AQUí
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 ###The Vigenere Cypher 
 
 A main weakness of the Caesar cipher is that every letter in the cleartext message is shifted by the same number of positions. The Vignere cipher is a somewhat stronger encryption method because the shift used on each letter is not constant. Whereas the Caesar cipher receives as input a cleartext message and a displacement, the Vignere receives the cleartext message and **keyword**. For now, lets assume that the keyword and the cleartext message have the same length. The Vignere cipher uses the keyword to determine the shift that will be applied to each letter of the cleartext message, i.e. the first letter of the keyword determines the shift number for the first letter of the message and so forth. 
 
 
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 ##References
 
-http://www.nctm.org/uploadedImages/Classroom_Resources/Lesson_Plans/
+http://www.nctm.org/uploadedImages/Classroom_Resources/Lesson_Plans/

README-es.md

 
 
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