Implementing-cryptography-using-python

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IndexSYMBOLS\ (backslash), 10- operator, 12/ operator, 12// operator, 12//= (floor division) assignment operator, 14_ (binary One Complement) bitwiseoperator, 15, 52| (binary OR) bitwise operator, 15, 52+ operator, 11, 12+= (add AND) assignment operator, 14+K A (notation in cryptographic protocols), 37/= (divide AND) assignment operator, 14= (subtract AND) assignment operator, 14= assignment operator, 14!= comparison operator, 13== comparison operator, 13% operator, 12%= (modulus AND) assignment operator, 14& (binary AND) bitwise operator, 15, 52* operator, 12** operator, 12**= (exponent AND) assignment operator, 14*= (multiply AND) assignment operator, 14^ (binary XOR) bitwise operator, 15, 52< comparison operator, 13<< (binary Left Shift) bitwise operator, 15, 52<= comparison operator, 13<>= comparison operator, 13> comparison operator, 13>= comparison operator, 13>> (binary Right Shift) bitwise operator, 15,52AA (notation in cryptographic protocols), 37A → B: m (notation in cryptographicprotocols), 37A[m] (notation in cryptographic protocols),37a+ file operator, 19addition + operator, 12Adleman, Leonard (researcher), 34, 226AES (Advanced Encryption Standard), 36,156, 167, 180–187AES-GCM, 261Affine cipher, 90–93algorithmsARX algorithms, 149asymmetric algorithms, 36DEC algorithm, 2deterministic algorithm, 101ENC algorithm, 2exploring, 2GEN algorithm, 2Mersenne Twister algorithm, 116published and proprietary encryption,61–62RSA algorithm, 104, 226–235, 242Secure Hash Algorithms (SHAs), 203–204,205, 209symmetric algorithms, 36Alice and Bob, as most famouscryptographic couple, 33–34analytical attacks, 48AND, 50–55and (logical AND), 14Implementing Cryptography Using Python®, First Edition. Shannon W. Bray.© 2020 John Wiley & Sons, Inc. Published 2020 by John Wiley & Sons, Inc.277
278 Index ■ B–CAppend file operator, 19arbiter, 35arbitrated authentication, 35–36ARC4 (ARCFOUR), 147–148arithmetic operators, 11–13Artjuhov, M. M., 100ARX algorithms, 149ASCII encoding, 70assignment operator, 10, 14associativity (as group axiom), 106asymmetric algorithms, 36Atbash cipher, 77attack models, 49–50attacksanalytical attacks, 48birthday attack, 59, 207–209brute-force attacks, 47–48length extension attack, 209–210reflection attack, 211reordering attack, 211replay attack, 211side-channel attacks, 48social engineering, 48Authenticate Then Decrypt, 211authenticationarbitrated authentication, 35data origin authentication, 34–35direct authentication, 35entity authentication, 35–36inter-realm authentication, 40message authentication codes, 60Bbackslash (\), 10Base64 encoding text, 70bcrypt library, 69Bernstein, Daniel, 149bin() function, 52binary data, 71binary digests, 204–205binascii library, 140birthday attack, 59, 207–209bitwise operators, 15, 52blind signatures, 33block cipher mode, 158block ciphersAES (Advanced Encryption Standard), 36,156, 167block modes of operation, 158CBC mode (formerly Cipher BlockChaining), 159–160CFB mode (Cipher Feedback mode),160–162CTR mode (Integer Counter mode orSegmented Integer Counter mode),162–164DIY block cipher using Feistel networks,165–166ECB mode (formerly Electronic Codebook),158–159OFB mode (Output Feedback mode),162–163overview, 156–158tricks with stream modes, 164–165block modes of operation, 180–187Blowfish, 36Bob and Alice, as most famouscryptographic couple, 33–34Boolean test, 16break loop, 18brute-force attacks, 47–48buffer sequence type, 20, 21Bundle, Pip as similar to, 5CCA- A (notation in cryptographic protocols),37CA<<A>> (notation in cryptographicprotocols), 37Caesar cipher, 74–76CBC mode (formerly Cipher BlockChaining), 159–160, 180, 185–186CBC-MAC (cipher block chaining messageauthentication code), 206–207CCA (Chosen-Ciphertext), 50Cert -CK CA( +K A ) (notation in cryptographicprotocols), 37certificate, self-signed, 45–46certificate authorities (CAs), 42certificate chains, 42–44certificate hierarchy, 42–44certificate revocation, 44–45CFB mode (Cipher Feedback mode),160–162ChaCha cipher, 151–156ChaCha20 stream cipher, 145channelsadding symmetric encryption, 215–218communication channels, 211concatenate message and MAC, 218–221creating client socket, 213–214creating server socket, 212–213creating threaded server with TCP, 214–215sending secure messages over IP networks,212–221setting up secure one, 210–221chmod command, 3Choctaw Indian language, as historicalcipher, 73Chosen-Ciphertext (CCA), 50Chosen-Plaintext (CPA), 50Chromebook, installing Python on, 4–5
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ImplementingCryptography UsingPytho
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To Stephanie, Eden, Hayden, and Ken
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viAbout the Authorbook, Shannon is
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Contents at a GlanceIntroductionxvi
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xiiContentsUsing Conditionals 16Usi
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xivContentsPseudorandomness115Break
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xviContentsInstalling and Testing W
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xviiiIntroductionprivacy advocates.
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CHAPTER1Introduction to Cryptograph
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Chapter 1 ■ Introduction to Crypt
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CHAPTER2Cryptographic Protocolsand
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Chapter 2 ■ Cryptographic Protoco
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66 Chapter 3 ■ Classical Cryptogr
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CHAPTER4Cryptographic Mathand Frequ
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Chapter 4 ■ Cryptographic Math an
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CHAPTER5Stream Ciphers and Block Ci
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Chapter 5 ■ Stream Ciphers and Bl
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CHAPTER6Using Cryptography with Ima
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Chapter 6 ■ Using Cryptography wi
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200 Chapter 7 ■ Message Integrity
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224 Chapter 8 ■ Cryptographic App
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Page 260 and 261: CHAPTER9Mastering CryptographyUsing
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Page 292 and 293: Index ■ D-D 279CIA Triad, 35-36ci
Page 294 and 295: Index ■ I-M 281hashlib module, 28
Page 296 and 297: Index ■ Q-S 283Preneel, Bart, 145
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