Hacking Secret Ciphers with Python

Chapter 18 – Hacking the Simple Substitution Cipher 281 If by chance this removal caused the list of potential decryption letter ...

282 http://inventwithpython.com/hacking Email questions to the author: [email protected] variable with all non-letter and ...

Chapter 18 – Hacking the Simple Substitution Cipher 283 decrypts to does not exist in our dictionary file. In that case the cont ...

284 http://inventwithpython.com/hacking Email questions to the author: [email protected] First create a simple sub key ...

Chapter 18 – Hacking the Simple Substitution Cipher 285 simpleSubHacker.py 146. else: 147. ciphertext = ciphertext.replace(ciphe ...

286 http://inventwithpython.com/hacking Email questions to the author: [email protected] Summary Whew! This hacking progra ...

Chapter 19 – The Vigenère Cipher 287 THE VIGENÈRE CIPHER Topics Covered In This Chapter:  Subkeys “I believed then, and continu ...

288 http://inventwithpython.com/hacking Email questions to the author: [email protected] Le Chiffre Indéchiffrable The Vig ...

Chapter 19 – The Vigenère Cipher 289 The key in a Vigenère cipher is a series of letters, such as a single English word. This si ...

290 http://inventwithpython.com/hacking Email questions to the author: [email protected] Table 19-1. Numbers of the letter ...

Chapter 19 – The Vigenère Cipher 291 The good news is that for every additional letter the key has, the number of possible keys ...

292 http://inventwithpython.com/hacking Email questions to the author: [email protected] first you will need to download t ...

Chapter 19 – The Vigenère Cipher 293 translated = decryptMessage(myKey, myMessage) print('%sed message:' % (myMode.title())) ...

294 http://inventwithpython.com/hacking Email questions to the author: [email protected] return ''.join(translated) ...

Chapter 19 – The Vigenère Cipher 295 grant Turing a statutory pardon if enacted.""" myKey = 'ASIMOV' myMode = 'encrypt' # set t ...

296 http://inventwithpython.com/hacking Email questions to the author: [email protected] key = key.upper() In the transl ...

Chapter 19 – The Vigenère Cipher 297 In the Caesar cipher code, we checked if the new value of num was less than 0 (in which cas ...

298 http://inventwithpython.com/hacking Email questions to the author: [email protected] However, if we were on the last s ...

Chapter 20 – Frequency Analysis 299 FREQUENCY ANALYSIS Topics Covered In This Chapter:  Letter Frequency and ETAOIN  The sort( ...

300 http://inventwithpython.com/hacking Email questions to the author: [email protected] A coin has 2 sides, and when you ...