Hello forum, recently i was very interested in cryptography, and i found this book very interesting so i decided to share with you. I hope you are going to enjoy it
Some details
filetype: pdf
number of pages: 658
download link: https://www.mediafire.com/file/4x40..._-A-Practical-Guide_Expanded-Edition.pdf/file
Contents In Detail
1. Praise for Codebreaking
2. Also by Elonka Dunin and Klaus Schmeh
3. Title page
4. Copyright
5. Dedication
6. About the Authors
7. Preface
8. Chapter 1: How can I break an encrypted message? And other
introductory questions
1. What is this book about?
2. Which technical terms do I need to know?
3. How can I break an encrypted text?
4. How do I know what kind of encryption I am dealing with?
5. I have found an encrypted text in the attic; can you decipher it for
me?
6. I have encrypted a text myself; can you break it?
7. I have invented a new encryption method; can you take a look at
it?
8. I have solved a famous unsolved cryptogram; what should I do?
9. What tools do I need for codebreaking?
10. How can I encrypt my files and email?
11. I have a comment on this book; what should I do?
12. Who contributed to this book?
9. Chapter 2: The Caesar cipher
1. How the Caesar cipher works
2. How to detect a Caesar cipher
3. How to break a Caesar cipher
4. Success stories
1. A prison inmate’s cipher
2. A spy’s encrypted sheet
3. An encrypted journal from the movie The Prestige
5. Challenges
1. Herbert Yardley’s first challenge
2. A series of newspaper advertisements from 1900
10. Chapter 3: Simple substitution ciphers
1. How simple substitution ciphers work
2. How to detect a simple substitution cipher
1. Example of a cipher that is not a simple substitution cipher
2. Index-of-coincidence technique
3. How to break a simple substitution cipher
1. Performing a frequency analysis
2. Guessing frequent words
3. Guessing words with unusual letter patterns
4. Success stories
1. How Gary Klivans broke a prison inmate’s code
2. How Kent Boklan broke encrypted diary entries from the
Civil War
3. Beatrix Potter’s diary
5. Challenges
1. A prison code
2. A postcard
3. Another postcard
4. The Friedmans’ wedding centennial nickel
5. An Aristocrat from the ACA
6. Unsolved cryptograms
1. An encrypted newspaper ad from 1888
2. The Zodiac Celebrity Cypher
3. The Furlong postcard
11. Chapter 4: Simple substitution ciphers without spaces between words:
Patristocrats
1. How a Patristocrat, a simple substitution cipher without spaces,
works
2. How to detect a Patristocrat
3. How to break a Patristocrat
1. Frequency analysis using digraphs
2. Word guessing
4. Success stories
1. A prison message
2. The Cheltenham Number Stone
5. Challenges
1. Rudyard Kipling’s encrypted message
2. NSA’s second Monday Challenge
6. Unsolved cryptograms
1. The Dorabella cryptogram
2. The Chinese gold bars mystery
3. James Hampton’s notebook
12. Chapter 5: Simple substitution ciphers in non-English languages
1. Detecting the language used
2. How to break a non-English simple substitution cipher
1. Frequency analysis and word guessing
2. Word pattern guessing
3. Success stories
1. A girl’s pigpen cipher (Spanish)
2. The La Buse cryptogram (French)
3. A postcard with a love message (German)
4. A Mafia message (Italian)
4. Challenges
1. An encrypted postcard
2. The third NSA Monday Challenge
3. Christlieb Funk’s challenge cryptogram
5. Unsolved cryptograms
1. The Voynich manuscript
2. The cigarette case cryptogram
3. NSA’s fourth Monday Challenge
4. The Moustier altar inscriptions
13. Chapter 6: Homophonic ciphers
1. How homophonic ciphers work
2. How to detect a homophonic cipher
3. How to break a homophonic cipher
4. Success stories
1. The first Zodiac message (Z408)
2. The Zodiac Killer’s second message (Z340)
3. Ferdinand III’s letters
4. A postcard from Hawaii
5. Challenges
1. A message to the Zodiac Killer
2. Edgar Allan Poe’s second challenge
6. Unsolved cryptograms
1. Beale Papers #1 and #3
2. The Zodiac Killer’s third message (Z13)
3. The Zodiac Killer’s fourth message (Z32)
4. The Scorpion cryptograms
5. Henry Debosnys’s messages
14. Chapter 7: Codes and nomenclators
1. Codes
2. Nomenclators
3. Terminology
4. The history of codes and nomenclators
5. Superencryption of codes and nomenclators
6. How to detect a code or nomenclator
7. How to break a code or nomenclator
1. Finding the nomenclator table or codebook
2. Exploiting weaknesses of codes and nomenclators
3. Solving codes and nomenclators with cribs
8. Success stories
1. A telegram sent to Tel Aviv
2. Encrypted messages by Mary, Queen of Scots
3. Collinson’s search expedition
4. The Japanese JN-25 code
9. Challenges
1. The Mount Everest telegram
10. Unsolved cryptograms
1. The silk dress cryptogram
2. The train station robbery cryptogram
3. A Pollaky newspaper advertisement
4. Lord Manchester’s letter
15. Chapter 8: Polyalphabetic ciphers
1. How a polyalphabetic cipher works
1. Vigenère cipher
2. Other polyalphabetic ciphers
3. One-time pad
2. How to detect a polyalphabetic cipher
3. How to break a polyalphabetic cipher
1. Word guessing
2. Checking for repeating patterns (Kasiski’s method)
3. Using the index of coincidence
4. Dictionary attacks
5. Tobias Schrödel’s method
6. Other Vigenère breaking methods
7. How to break a one-time pad
4. Success stories
1. The Diana Dors message
2. Kryptos 1 and 2
3. The Cyrillic Projector
4. Thouless’s second cryptogram from the crypt
5. The Smithy Code
5. Challenges
1. The Schooling challenge
2. A German radio message from the Second World War
6. Unsolved cryptograms
1. Wood’s cryptogram from the crypt
16. Chapter 9: Complete columnar transposition ciphers
1. How complete columnar transposition ciphers work
2. How to detect a complete columnar transposition cipher
3. How to break a complete columnar transposition cipher
1. The arrange-and-read method
2. Vowel frequencies and multiple anagramming
4. Success stories
1. Donald Hill’s diary
2. The Pablo Waberski spy case
5. Challenges
1. The Lampedusa message
2. The Friedmans’ love messages
3. An encrypted “agony” ad
4. Yardley’s eleventh ciphergram
5. Edgar Allan Poe’s first challenge
6. An IRA message
17. Chapter 10: Incomplete columnar transposition ciphers
1. How an incomplete columnar transposition cipher works
2. How to detect an incomplete columnar transposition cipher
3. How to break an incomplete columnar transposition cipher
4. Success stories
1. Kryptos K3
2. Antonio Marzi’s radio messages
5. Challenges
1. Yet another IRA message
2. The Double Columnar Transposition Reloaded challenge
6. Unsolved cryptograms
1. The Catokwacopa ad series
18. Chapter 11: Turning grille transposition ciphers
1. How turning grille encryption works
2. How to detect a turning grille encryption
3. How to break a turning grille encryption
4. Success stories
1. Paolo Bonavoglia’s turning grille solution
2. André Langie’s turning grille solution
3. Karl de Leeuw’s turning grille solution
4. The Mathias Sandorf cryptogram
5. Challenges
1. The Friedmans’ Christmas card
2. Jew-Lee and Bill’s Cryptocablegram
3. A MysteryTwister challenge
4. A Kerckhoffs cryptogram
19. Chapter 12: Digraph substitution
1. How general digraph substitution works
2. How the Playfair cipher works
3. How to detect a general digraph substitution
4. How to detect a Playfair cipher
5. How to break a digraph substitution
1. Frequency analysis
2. Dictionary attacks
3. Manual attacks
6. Success stories
1. Thouless’s first message
2. Thouless’s third message
7. Challenges
1. The cryptogram in National Treasure: Book of Secrets
8. Unsolved cryptograms
1. The world record digraph challenge
2. The world record Playfair challenge
20. Chapter 13: Abbreviation ciphers
1. How abbreviation ciphers work
2. How to detect an abbreviation cipher
3. How to break an abbreviation cipher
4. Success stories
1. Emil Snyder’s booklet
5. Challenges
1. A birthday card
6. Unsolved cryptograms
1. The Tamám Shud mystery
2. Two unsolved postcards
21. Chapter 14: Dictionary codes and book ciphers
1. How dictionary codes and book ciphers work
2. How to detect a dictionary code or book cipher
3. How to break a dictionary code or book cipher
1. Identifying the book or dictionary
2. Reconstructing the dictionary
3. Treating a book cipher like a simple substitution cipher
4. Success stories
1. The FIDES ads
2. Nicholas Trist’s key book
3. How William Friedman broke a Hindu conspiracy
encryption
4. A dictionary code message sent to Robert E. Lee
5. Challenges
1. Dan Brown’s book cipher challenge
2. A dictionary code challenge
6. Unsolved cryptograms
1. Two encrypted newspaper advertisements from 1873
22. Chapter 15: Additional encryption methods
1. Cipher tools
2. Voice encryption
3. Code talking
4. Shorthand (stenography)
5. Hidden messages (steganography)
1. Success story: How Elonka found a hidden message on a
tombstone
2. Success story: Deciphering Steganographia
3. Success story: Mysterious Stranger message
4. Challenge: Another steganographic message by the
Friedmans
6. Cipher machines
23. Chapter 16: Solving ciphers with hill climbing
1. Solving simple substitution ciphers with hill climbing
1. Simulated annealing
2. Success story: Bart Wenmeckers’s solution to the Baring-
Gould cryptogram
3. Success story: The Florida murder case cryptogram
2. Solving a homophonic cipher with simulated annealing
1. Success story: Dhavare, Low, and Stamp’s Zodiac Killer
solutions
3. Solving a Vigenère cipher with hill climbing
1. Success story: Jim Gillogly’s solution to IRA Vigenère
cryptograms
4. Solving a columnar transposition with hill climbing
1. Success story: Jim Gillogly’s solution to IRA transposition
cryptograms
2. Success story: Richard Bean’s solution to the last unsolved
IRA cryptogram
3. Success story: George Lasry’s solution of the double
columnar transposition challenge
5. Solving a turning grille cipher with hill climbing
1. Success story: Bart Wenmeckers’s solution to a turning
grille cryptogram
2. Success story: Armin Krauss’s solution to a turning grille
challenge
6. Solving a general digraph substitution with hill climbing
1. Success story: Some digraph challenges
7. Solving a Playfair cipher with hill climbing
1. Success story: Dan Girard’s solution to the Cheltenham
Letter Stone
2. Success story: Playfair world records
8. Solving machine ciphers with hill climbing
1. Success story: Breaking original Enigma messages
24. Chapter 17: What next?
1. More unsolved cryptograms
1. The fourth Kryptos message (K4)
2. The Rubin cryptogram
3. Ricky McCormick’s encrypted notes
4. The carrier pigeon message from World War II
5. The encrypted NKRYPT pillars
6. Even more unsolved cryptograms
2. Codebreaking tools
3. Other books about codebreaking
4. Websites about codebreaking
5. Journals and newsletters
6. Events
25. Appendix A: Kryptos
26. Appendix B: Useful language statistics
27. Appendix C: Glossary
28. Appendix D: Morse code
29. Appendix E: Figure sources
30. Appendix F: References
31. Index
Some details
filetype: pdf
number of pages: 658
download link: https://www.mediafire.com/file/4x40..._-A-Practical-Guide_Expanded-Edition.pdf/file
Contents In Detail
1. Praise for Codebreaking
2. Also by Elonka Dunin and Klaus Schmeh
3. Title page
4. Copyright
5. Dedication
6. About the Authors
7. Preface
8. Chapter 1: How can I break an encrypted message? And other
introductory questions
1. What is this book about?
2. Which technical terms do I need to know?
3. How can I break an encrypted text?
4. How do I know what kind of encryption I am dealing with?
5. I have found an encrypted text in the attic; can you decipher it for
me?
6. I have encrypted a text myself; can you break it?
7. I have invented a new encryption method; can you take a look at
it?
8. I have solved a famous unsolved cryptogram; what should I do?
9. What tools do I need for codebreaking?
10. How can I encrypt my files and email?
11. I have a comment on this book; what should I do?
12. Who contributed to this book?
9. Chapter 2: The Caesar cipher
1. How the Caesar cipher works
2. How to detect a Caesar cipher
3. How to break a Caesar cipher
4. Success stories
1. A prison inmate’s cipher
2. A spy’s encrypted sheet
3. An encrypted journal from the movie The Prestige
5. Challenges
1. Herbert Yardley’s first challenge
2. A series of newspaper advertisements from 1900
10. Chapter 3: Simple substitution ciphers
1. How simple substitution ciphers work
2. How to detect a simple substitution cipher
1. Example of a cipher that is not a simple substitution cipher
2. Index-of-coincidence technique
3. How to break a simple substitution cipher
1. Performing a frequency analysis
2. Guessing frequent words
3. Guessing words with unusual letter patterns
4. Success stories
1. How Gary Klivans broke a prison inmate’s code
2. How Kent Boklan broke encrypted diary entries from the
Civil War
3. Beatrix Potter’s diary
5. Challenges
1. A prison code
2. A postcard
3. Another postcard
4. The Friedmans’ wedding centennial nickel
5. An Aristocrat from the ACA
6. Unsolved cryptograms
1. An encrypted newspaper ad from 1888
2. The Zodiac Celebrity Cypher
3. The Furlong postcard
11. Chapter 4: Simple substitution ciphers without spaces between words:
Patristocrats
1. How a Patristocrat, a simple substitution cipher without spaces,
works
2. How to detect a Patristocrat
3. How to break a Patristocrat
1. Frequency analysis using digraphs
2. Word guessing
4. Success stories
1. A prison message
2. The Cheltenham Number Stone
5. Challenges
1. Rudyard Kipling’s encrypted message
2. NSA’s second Monday Challenge
6. Unsolved cryptograms
1. The Dorabella cryptogram
2. The Chinese gold bars mystery
3. James Hampton’s notebook
12. Chapter 5: Simple substitution ciphers in non-English languages
1. Detecting the language used
2. How to break a non-English simple substitution cipher
1. Frequency analysis and word guessing
2. Word pattern guessing
3. Success stories
1. A girl’s pigpen cipher (Spanish)
2. The La Buse cryptogram (French)
3. A postcard with a love message (German)
4. A Mafia message (Italian)
4. Challenges
1. An encrypted postcard
2. The third NSA Monday Challenge
3. Christlieb Funk’s challenge cryptogram
5. Unsolved cryptograms
1. The Voynich manuscript
2. The cigarette case cryptogram
3. NSA’s fourth Monday Challenge
4. The Moustier altar inscriptions
13. Chapter 6: Homophonic ciphers
1. How homophonic ciphers work
2. How to detect a homophonic cipher
3. How to break a homophonic cipher
4. Success stories
1. The first Zodiac message (Z408)
2. The Zodiac Killer’s second message (Z340)
3. Ferdinand III’s letters
4. A postcard from Hawaii
5. Challenges
1. A message to the Zodiac Killer
2. Edgar Allan Poe’s second challenge
6. Unsolved cryptograms
1. Beale Papers #1 and #3
2. The Zodiac Killer’s third message (Z13)
3. The Zodiac Killer’s fourth message (Z32)
4. The Scorpion cryptograms
5. Henry Debosnys’s messages
14. Chapter 7: Codes and nomenclators
1. Codes
2. Nomenclators
3. Terminology
4. The history of codes and nomenclators
5. Superencryption of codes and nomenclators
6. How to detect a code or nomenclator
7. How to break a code or nomenclator
1. Finding the nomenclator table or codebook
2. Exploiting weaknesses of codes and nomenclators
3. Solving codes and nomenclators with cribs
8. Success stories
1. A telegram sent to Tel Aviv
2. Encrypted messages by Mary, Queen of Scots
3. Collinson’s search expedition
4. The Japanese JN-25 code
9. Challenges
1. The Mount Everest telegram
10. Unsolved cryptograms
1. The silk dress cryptogram
2. The train station robbery cryptogram
3. A Pollaky newspaper advertisement
4. Lord Manchester’s letter
15. Chapter 8: Polyalphabetic ciphers
1. How a polyalphabetic cipher works
1. Vigenère cipher
2. Other polyalphabetic ciphers
3. One-time pad
2. How to detect a polyalphabetic cipher
3. How to break a polyalphabetic cipher
1. Word guessing
2. Checking for repeating patterns (Kasiski’s method)
3. Using the index of coincidence
4. Dictionary attacks
5. Tobias Schrödel’s method
6. Other Vigenère breaking methods
7. How to break a one-time pad
4. Success stories
1. The Diana Dors message
2. Kryptos 1 and 2
3. The Cyrillic Projector
4. Thouless’s second cryptogram from the crypt
5. The Smithy Code
5. Challenges
1. The Schooling challenge
2. A German radio message from the Second World War
6. Unsolved cryptograms
1. Wood’s cryptogram from the crypt
16. Chapter 9: Complete columnar transposition ciphers
1. How complete columnar transposition ciphers work
2. How to detect a complete columnar transposition cipher
3. How to break a complete columnar transposition cipher
1. The arrange-and-read method
2. Vowel frequencies and multiple anagramming
4. Success stories
1. Donald Hill’s diary
2. The Pablo Waberski spy case
5. Challenges
1. The Lampedusa message
2. The Friedmans’ love messages
3. An encrypted “agony” ad
4. Yardley’s eleventh ciphergram
5. Edgar Allan Poe’s first challenge
6. An IRA message
17. Chapter 10: Incomplete columnar transposition ciphers
1. How an incomplete columnar transposition cipher works
2. How to detect an incomplete columnar transposition cipher
3. How to break an incomplete columnar transposition cipher
4. Success stories
1. Kryptos K3
2. Antonio Marzi’s radio messages
5. Challenges
1. Yet another IRA message
2. The Double Columnar Transposition Reloaded challenge
6. Unsolved cryptograms
1. The Catokwacopa ad series
18. Chapter 11: Turning grille transposition ciphers
1. How turning grille encryption works
2. How to detect a turning grille encryption
3. How to break a turning grille encryption
4. Success stories
1. Paolo Bonavoglia’s turning grille solution
2. André Langie’s turning grille solution
3. Karl de Leeuw’s turning grille solution
4. The Mathias Sandorf cryptogram
5. Challenges
1. The Friedmans’ Christmas card
2. Jew-Lee and Bill’s Cryptocablegram
3. A MysteryTwister challenge
4. A Kerckhoffs cryptogram
19. Chapter 12: Digraph substitution
1. How general digraph substitution works
2. How the Playfair cipher works
3. How to detect a general digraph substitution
4. How to detect a Playfair cipher
5. How to break a digraph substitution
1. Frequency analysis
2. Dictionary attacks
3. Manual attacks
6. Success stories
1. Thouless’s first message
2. Thouless’s third message
7. Challenges
1. The cryptogram in National Treasure: Book of Secrets
8. Unsolved cryptograms
1. The world record digraph challenge
2. The world record Playfair challenge
20. Chapter 13: Abbreviation ciphers
1. How abbreviation ciphers work
2. How to detect an abbreviation cipher
3. How to break an abbreviation cipher
4. Success stories
1. Emil Snyder’s booklet
5. Challenges
1. A birthday card
6. Unsolved cryptograms
1. The Tamám Shud mystery
2. Two unsolved postcards
21. Chapter 14: Dictionary codes and book ciphers
1. How dictionary codes and book ciphers work
2. How to detect a dictionary code or book cipher
3. How to break a dictionary code or book cipher
1. Identifying the book or dictionary
2. Reconstructing the dictionary
3. Treating a book cipher like a simple substitution cipher
4. Success stories
1. The FIDES ads
2. Nicholas Trist’s key book
3. How William Friedman broke a Hindu conspiracy
encryption
4. A dictionary code message sent to Robert E. Lee
5. Challenges
1. Dan Brown’s book cipher challenge
2. A dictionary code challenge
6. Unsolved cryptograms
1. Two encrypted newspaper advertisements from 1873
22. Chapter 15: Additional encryption methods
1. Cipher tools
2. Voice encryption
3. Code talking
4. Shorthand (stenography)
5. Hidden messages (steganography)
1. Success story: How Elonka found a hidden message on a
tombstone
2. Success story: Deciphering Steganographia
3. Success story: Mysterious Stranger message
4. Challenge: Another steganographic message by the
Friedmans
6. Cipher machines
23. Chapter 16: Solving ciphers with hill climbing
1. Solving simple substitution ciphers with hill climbing
1. Simulated annealing
2. Success story: Bart Wenmeckers’s solution to the Baring-
Gould cryptogram
3. Success story: The Florida murder case cryptogram
2. Solving a homophonic cipher with simulated annealing
1. Success story: Dhavare, Low, and Stamp’s Zodiac Killer
solutions
3. Solving a Vigenère cipher with hill climbing
1. Success story: Jim Gillogly’s solution to IRA Vigenère
cryptograms
4. Solving a columnar transposition with hill climbing
1. Success story: Jim Gillogly’s solution to IRA transposition
cryptograms
2. Success story: Richard Bean’s solution to the last unsolved
IRA cryptogram
3. Success story: George Lasry’s solution of the double
columnar transposition challenge
5. Solving a turning grille cipher with hill climbing
1. Success story: Bart Wenmeckers’s solution to a turning
grille cryptogram
2. Success story: Armin Krauss’s solution to a turning grille
challenge
6. Solving a general digraph substitution with hill climbing
1. Success story: Some digraph challenges
7. Solving a Playfair cipher with hill climbing
1. Success story: Dan Girard’s solution to the Cheltenham
Letter Stone
2. Success story: Playfair world records
8. Solving machine ciphers with hill climbing
1. Success story: Breaking original Enigma messages
24. Chapter 17: What next?
1. More unsolved cryptograms
1. The fourth Kryptos message (K4)
2. The Rubin cryptogram
3. Ricky McCormick’s encrypted notes
4. The carrier pigeon message from World War II
5. The encrypted NKRYPT pillars
6. Even more unsolved cryptograms
2. Codebreaking tools
3. Other books about codebreaking
4. Websites about codebreaking
5. Journals and newsletters
6. Events
25. Appendix A: Kryptos
26. Appendix B: Useful language statistics
27. Appendix C: Glossary
28. Appendix D: Morse code
29. Appendix E: Figure sources
30. Appendix F: References
31. Index