The Code Book. How to Make It, Break It, Hack It, Crack It

The Code Book. How to Make It, Break It, Hack It, Crack It❰Reading❯ ➶ The Code Book. How to Make It, Break It, Hack It, Crack It Author Simon Singh – In 1586 din inchisoare Maria Stuart urzeste un complot impotriva reginei Elisabeta protejandu si corespondenta printr un cifru pe care l credea impenetrabil Criptologii reginei Angliei reusesc insa sa In din inchisoare Maria Stuart Book. How PDF/EPUB ç urzeste un complot impotriva reginei Elisabeta protejandu si corespondenta printr un cifru pe care l credea impenetrabil Criptologii reginei Angliei reusesc insa sa sparga cifrul iar Maria Stuart e condamnata la moarte si executata In primavara lui ministrul de externe german transmite presedintelui mexican un mesaj cifrat prin care l indeamna sa atace Statele Unite mesajul e interceptat si descifrat de englezi iar rezultatul este ca dupa o lunga neutralitate America The Code Kindle - intra in razboi inclinand decisiv balanta in favoarea aliatilor Douazeci de ani mai tarziu in al doilea razboi mondial la inceput polonezii apoi englezii reusesc sa sparga codul redutabilei masini germane de criptat Enigma iar astfel ajung sa cunoasca toate comunicatiile secrete ale inamiculuiCartea codurilor spune povestea luptei permanente intre cei care vor sa pastreze secrete informatiile si cei care vor sa le descopere intre creatorii de coduri si spargatorii de coduri Eroii cartii lui Simon Singh sunt mari Code Book. How PDF ↠ matematicieni intre care Charles Babbage si Alan Turing a caror munca a ramas decenii de a randul secreta dar care au influentat hotarator cursul istorieiIn prezent in Epoca Informatiei importanta cifrurilor e cu atat mai mare cu cat depindem de secretul a nenumarate comunicatii si operatiuni efectuate prin calculator intreaga lume riscand sa se prabuseasca in fata unui malefic spargator de coduriCartea codurilor contine in final sub titlul „Provocarea cifrului“ o serie de zece probleme criptografice pe care Simon Code Book. How to Make Epub / Singh le propune cititorilor. 9788 432411439 1440 57418348 0 50828309836 7889474 45 24348 033 243417400836 5742 0328439 46459 94 974 243473 3047 83 50296 89 6448 434 8945 5079747 9703 5748439 3046 033 68148 08 0 1440 09 2709 974 509074 204 7413 83 9788 584137974 009747 278948 01409 2709 24013 7014 1443 60894 0 374 8019429 2897 8027 4397088082 033 83 8027 03 43606836 204 9709 434 20399 7415 109 14 37023 837 145474 7403836 9788 14406 8 4314 703 0 1474 70382439074 034214364 45 274594670574 033 02 1474 2027 974 1042037 88367 43510838 978368 84 2411 9709 440 34399 3443 034 57847 034214364 45 974 8019429 94 902014 9788 14408 85 8 203 0334789033 896 0341434 203 8911 3458389414 14 7403836 2474 45 788 2470 83 974 50907478424 45 974 945828 2414743 7474 074399 94273820114 243247343 2897 24348 033 2434174008366 109 3401 2897 974 97038109843 45 0328439 94398 8027 08 78474614578287 0328439 3403 103600648 074399 243486 08 80276 1420084 9744 2474399 2740943 2897 974 839439843 45 2432401836 974 243943988 60894 974 455488946 83 50298 109 9744 074 74141039 83 9709 8424 45 974 9427386048 074 870743 2897 2434174008367 97484 27059478 02900114 2004 547 740114 83947489836 74038366 84 8998 0 2412424 381478843 033 434 9709 88367 240148 8394 974 7489 45 974 1440 8402148814714 2073436 9740678 7403836 9788 1440 2811 2004 440 2039 94 34114 344547 8394 974 8019429 2099477 547903094146 974 009747 57418348 0 5079747 7403836 1889 09 974 433 45 974 14406 84 97474 074 514394 45 509074 34186798 83 894745787 85 440 02900114 2439 94 974 455479 45 34243836 9788 7418426 440 649 0 6413 89077 03 820683074 6413 89076 109 89811777And for those who care here is the key to decode the above review0 a k u1 b l v2 c m w3 d n x 4 e o y5 f p z6 g 7 h r8 i s ;9 j t 'Be warned though; the key alone will not give you a complete decoding And for those who can't be bothered here's the decoded review view spoilerThis excellent book provides a fascinating history of codes and codebreaking from ancient Egypt to the modern day In fact it goes one step further than present day and gives us a look at what the future may hold in this field The author writes about what could have been uite a dry subject with such enthusiasm and in such an engaging way that one can’t help but be drawn in Before reading this book I only had a very rudimentary knowledge of cryptography and am very much the layman Singh explains things so well that you don’t need any prior knowledge of the subject to tackle this book; if I can understand it anybody can I’ll definitely be reading of his work in the future Some of the topics covered here aren’t technically concerned with codes and codebreaking but deal with the translation of ancient texts such as hieroglyphics Ancient dead languages aren’t codes as such because they weren’t created with the intention of concealing the contents; uite the opposite in fact; but they are relevant in that some of the techniues are shared with codebreaking These chapters actually make for really interesting reading so it’s a welcome diversion and one that Singh weaves into the rest of the book seamlessly Be warned though; reading this book will make you want to delve deeper into the subject matter Fortunately the author provides a further reading list at the end of the book so there are plenty of future delights in store PS If you actually went to the effort of decoding this review you get a gold star An imaginary gold star but still hide spoiler The Code Book is like geek porn Explanations of the theories behind cryptography are woven together with anecdotes of times when code making or code breaking was integral to historical events Singh strikes an excellent balance with this book The clarity of his writing makes the explanations of the mathematics of cryptography very straightforward without dumbing them down and the historical connections are always fascinatingPersonally my favorite part was the section devoted to the role cryptography played in World War II The cracking of the Enigma at Bletchley Park was probably one of the greatest moments in nerd historyIf you're fascinated by puzzles curious about history or you want to know what privacy really means in the 21st century pick up this book You'll have a hard time putting it down Coming on 20 years after the book was written it’s still uite awesome despite all our subseuent advances in cryptographyOr rather I should say we’re still living in the same world already transformed by pretty good encryption The methods for breaking the security still falls in the same category as usual interception Of course the means of interception has gotten amazingly good and creative as hell but that isn’t the primary scope of this book Rather it’s about an awesome crash course in the history of encryption from the Middle Ages or earlier say Roman or Greek all the way forward to mechanical solutions a la Babbage and right into the thrilling good stuff of WW2 including Turing and the awesome Code Talkers The advances since then are almost stunningly fascinating however and aside from Zimmerman’s courageous advent of PGP the REST of the story may well be trapped under National Security blankets still Alas What I wouldn’t give to get a backstage pass to those goings on Well written accessible and rather thorough this book remains one of the best books on encryption for laypersons Highly recommended PEARL RULED p79The development of the telegraph which had driven a commercial interest in cryptography was also responsible for generating public interest in cryptography The public became aware of the need to protect personal messages of a highly sensitive nature and if necessary they would use encryption even though this took time to send thus adding to the cost of the telegramWhen I awoke from my coma I realized 1 sesuipedalian verbiage needs must be read while fresh and hale 2 I don't care as much as I thought I would 3 hot Spring afternoon sunshine feels goodAlso I might not be as smart as I thought I was The graphs and tables preceding this page caused me to whimper and curl into a fetal ball Ahead I peeked were entirepages of comma separated numbers That is unconscionable It is a replay of Tau Zero the SF novel with euations in it that I could not even bring myself to hurl at a wall I was so paralyzed by outraged betrayal at picking up a novel to discover EUATIONS in itKeep your filthy math out of my fictionAnyway this book It's non fiction so there's no reason to be sniffy about numbers and junk right? Sorta right I need something to give me the will to drag myself over the glass shards atop the bed of coals and in this read there wasn't anything at stake from moment to moment Overall yes; secrecyprivacy is a major part of the online world both in its presence and absence But in this book the stakes are abstract and waaaaaaaaayyyyyyyyy above my li'l punkin haidI'll keep it in case it calls to me this winter Now no By far the best and the most interesting book on the subject recommended to anyone interested in Cryptography and its history I read it in three days mainly because I couldn't put it down I recently watched The Imitation Game which left such a bad taste in my mouth that I wanted to clean it up with something in a similar subject Having read two of Sighn's other books I picked this oneI had high expectations and it met them nicely The book tells the story of ciphers and encryption through history – from what the Greek and the Romans did through the Enigma and finally to RSA The style is very easy and pleasant to read everything is pretty understandable even if you don't have a math background sometimes to the point of being slightly inaccurate and there are a lot of interesting stories inbetweenThis book has a single downside – it's so pleasant and easy to read that you'll be done with it in no time Highly recommended I haven’t had this much gleeful delight in a book in a long time This book is pure fun It’s not fast reading necessarily and reuires some active engagement to keep up but man it is a blast If you read a lot of spy books as a child or if you’re secretly jealous when there’s a cipher to be solved in a TV or movie plot and a character says“Yeah I can totally crack this if I have a few hours let me get to work” you’re going to love this Singh introduces us to famous historical ciphers and codes as well as the basic principles underlying code making and code breaking you actually get a fairly solid foundation on understanding how to build and crack most classic ciphers CODES AND CIPHERS Some examples of interesting codes this book unpacks and deconstructs with you Transposition Substitution Superencipherment Caesar shift ciphers The Vigenere suare cipher The Great Cipher of Louis XIV The as yet unsolved Beale cypher The ADFGVX cipher The Zimmerman telegraph cipher The one time pad cipher aka a Vigenere cipher where the keyword is a random string of letters at least as many as are in the text to be enciphered which is inherently un decipherable by cryptanalysis But which of course reuires both the message writer and receiver to have a copy of the random key which makes it vulnerable to discovery Plus it’s expensive to constantly create brand new random keys for hundreds of messages a day Navajo code talking All the way on up to uantum cryptography which in theory at least is an uncrackable cipher CRYPTANALYSIS For me the real genius comes into play here in cryptanalysis the deciphering of all those nasty little devils Some memorable moments in cryptanalysis history Al Kindi’s method of deciphering by analyzing the message in terms of letter freuency or looking for unusual letter pairings in English is basically always followed by U so if you find a particular letter that is never followed by anything but another particular letter that’s probably and U Bazeries’ method of deciphering the Great Cipher of Louis XIV by analyzing by syllable freuency rather than letter Charles Babbage who incidentally invented the prototype of a computer way back in the 1700s invented a method of deciphering the Vigenere cipher First you look for repeated seuences of letters words that are repeated and which happened to have gotten encrypted the same way because they land on a multiple of the number of letters the key has You count the spaces in between those words and draw up a chart with all the different repeated word seuences and the factors that go into those spaces eg factors of 20 would include 1 2 4 5 10 and 20 but you wouldn’t use just 1 letter for a keyword so it can’t be that Find the number that's a factor common to ALL of the repeated letter seuences and you know the number of letters in the key word Then you look at the letters the first letter of the keyword would be used to encrypt and use freuency analysis on that I’m not explaining this well but Singh does and it’s so brilliant it makes your ears wiggle The deciphering of the ancient script known as Linear B by Alice Kober and Michael Ventris MODERN CRYPTOGRAPHY Cryptography can basically be credited with the invention of computers Further cryptographers are the reason you can send encrypted messages that nobody but the receiver can access and the reason you can buy things over the Internet without people taking you credit card information I have a BlackBerry so I feel like I’m supposed to be a slick techie who knows what encryption is but I’ve never heard it explained as straightforwardly as this bookAlice wants to send Bob a letter and she doesn’t want the postal service workers to be able to read it Obviously she can’t just send it in a padlocked iron lock box because she has no way of securely giving Bob a key So what can she do? She puts the letter in the iron box padlocks it mails it to him He puts his own padlock on it the box now has two padlocks and sends it back to her Now Alice removes her own padlock and sends the box locked with Bob’s own padlock back to him He removes his padlock and reads the letter That way the box is never unlocked but Alice and Bob don’t have to find a way to exchange keys This would be especially problematic if the key has to be different for every message or device the way it is in technology Then there's the asymmetrical public key encryption system designed by Diffie where Alice has a “public key” that allows anyone to encrypt a message to her but cannot be decrypted by the same key it can only be decrypted by another key the private key to which only Alice has access So Bob could “look up” Alice’s public key which is known to everyone encrypt his message to her and she can decrypt it In the padlock scenario this would mean Bob would go to the post office take an “Alice padlock” of which there are many copies lock the box with his message inside and mail it to her Only Alice holds the key that can unlock this so the system is secure CONCLUSIONS This is just such a cool book an absolute ride I can't imagine anyone who wouldn't have at least a little fun with it It's accessible it's interesting it's challenging and it's an unusual read Not a bad thing to say about this one I never thought I'd love a book about mathematics or ever see the beauty of mathematics My mother was definitely right when she kept pestering me to work harder on my math and argued that it was EVERYWHERE I had argued back saying I would be fine as long as I could perform the basic calculationsMaybe this is what growing up is aboutThat being said this is a very informative book about the past present and future of cryptography Singh takes us on a journey from ancient times where simple communications and hence simple codes sufficed through a series of unfortunate events that resulted in the execution of Mary ueen of Scotsto a time in the future when uantum cryptography might prevail My favorite part is when he talks about the decipherment of Linear B which led me to another amazing book of the same name an ancient language discovered in the remains of a palace in Crete Oh and he also makes the Second World War seem interesting in an entirely differently way Singh has a knack for explaining ideas and theories which might seem mundane if explained by someone else in a very interesting manner His use of characters called AliceBob and Eve to explain the codes made it easy for a layperson like me to understand the theory behind themHe even adds a few ciphers for us to decipher at the end I must admit I skipped over those pages but might return to them at some point in the futureI recommend this book to anyone who is fascinated by ancient history linguistics cryptography uantum physics OR MATHEMATICS This is a fascinating introduction to the world of cryptography It has opened my eyes to a whole new subject that interests me and now I have spent many hours attempting to create a machine that can decrypt hidden messages It is a wonderful and gripping tale of the history of cryptography and presents the entire plot as a battle between the code makers and the code breakers I was never left a little bored at parts as I occasionally am during non fiction books because it is a continuous story that flows throughout the pages It keeps you in suspense over the fate of the ueen of Scotland the behind the scenes intelligence conflict in the midst of World War II and the secret of the Beale treasure For anyone interested in the matter it is a must read and for anyone who think they might enjoy the subject I highly suggest itThe history contained in this near novel doesn't merely end a long time ago but extends up to the very present and discusses the exciting possibilities of cryptography in the future uantum computers and ubits enter the scene hopefully presenting the holy grail of code making letting the code makers win the struggle forever Our modern lives lay on the foundation of the public and private key system including everything from the internet to checks The only reason you are capable having your own private account in security is that complex math is occurring behind the scenes multiplying two prime numbers hundreds of digits long so that any computer would take the lifetime of the universe to decode the messages you send If you want to understand our modern age you should definitely read this book This is a must read before reading Cryptonomicon Or maybe after like I did If you at all feel uncomfortable in your knowledge of one time pad cyphers publicprivate keys or the importance of really good cryptography for average folks please read this book It's sadly a bit out of date but Singh does such a brilliant job of methodically building up the complexity in cyphers though history that you will inevitably learn a ton