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Parent Directory - 013.pdf 57K Cryptanalysis of a Provably Secure Cryptographic Hash Function 015-samyde_french.pdf 63K Cryptanalyse par side channel 016-samyde_english.pdf 59K Side channel cryptanalysis 044.pdf 312K Cryptanalysis of Block Ciphers with Overdefined Systems of Equations 109.pdf 240K Cryptanalysis of SAFER++ 125.pdf 229K Algebraic Attacks on Combiners with Memory and Several Outputs 135.pdf 127K Collision Attack on Reduced Round Camellia 142.pdf 153K On the Applicability of Distinguishing Attacks Against Stream Ciphers 152.pdf 135K A note on Weak Keys of PES, IDEA and some Extended Variants 31-tkohno.pdf 224K Preliminary Cryptanalysis of Reduced-Round Serpent 35-ebiham.pdf 179K Cryptanalysis of Reduced Variants of Rijndael 36-tshimoyama.pdf 196K Correlation Attack to the Block Cipher RC5 and the Simplified Variants of RC6 418pdf.pdf 125K Trojan Horse Attacking Strategy on Quantum Cryptography 752.pdf 662K Basic Cryptanalysis Techniques AttackTranspositionICEST2003.pdf 268K Attacks on the Transposition Ciphers Using Optimization Heuristics BauerCryptanalysis.pdf 96K Cryptanalysis CS0910.revised.pdf 197K Differential Fault Analysis of Secret Key Cryptosystems CS0928.pdf 177K Cryptanalysis of the ANSI X9.52 CDCM Mode Crypto94.pdf 230K Linear Cryptanalysis Using Multiple Approximations DFT2002_Paper.pdf 207K Fault-Based Side-Channel Cryptanalysis Tolerant Rijndael Symmetric Block Cipher Architecture Dobbertin_MD4.pdf 159K Cryptanalysis of MD4 Eurocrypt96.pdf 249K Non-Linear Approximations in Linear Cryptanalysis HG97chis.pdf 127K Cryptanalysis of the SEAL Encryption Algorithm Han99abs.pdf 62K Cryptanalyse et sécurité des algorithmes à clé secrète JournalHeysTavares.pdf 176K Substitution-Permutation Networks Resistant to Differential and Linear Cryptanalysis NitNat.pdf 335K Cracking the NitNat Cipher RSA-survey.pdf 303K Twenty Years of Attacks on RSA Cryptosystem ShortSecretExponents.pdf 119K Cryptanalysis of Short RSA Secret Exponents SubstGen.pdf 79K Solving Substitution Ciphers with Genetics Algorithm TalkSummerschool.pdf 161K Stream Cipher Cryptanalysis - Algebraic Attacks TriStrata.pdf 133K Security Weaknesses in a Randomized Stream Cipher TwokeytripleDES.pdf 58K Encryption and security: the Data Encryption Standard WuHongjun_2002_23840169.pdf 121K Cryptanalysis of Stream Cipher Alpha1 WuHongjun_2002_25130447.pdf 92K Related-Cipher Attacks Y_23_rc4_cryptana.pdf 200K Cryptanalysis of RC4-like Ciphers andreas3.pdf 2.3M How secure is a cipher? codebook_solution.pdf 325K How we Cracked the Code Book Ciphers correlation.pdf 140K Searching for the Optimum Correlation Attack cryptanalysis.pdf 147K A Self-Study Course in Block-Cipher Cryptanalysis cs753.pdf 227K New Types of Cryptanalytic Attacks Using Related Keys cs782.pdf 213K Differential Cryptanalysis of Lucifer cs813.pdf 188K On Matsui's Linear Cryptanalysis cs817.pdf 166K An Improvement of Davies' Attack on DES cs833.pdf 186K Cryptanalysis of Multiple Modes of Operation cs842.pdf 173K A Known Plaintext Attack on the PKZIP Stream Cipher cs885.pdf 261K Cryptanalysis of Triple Modes of Operation drm1.pdf 162K Attacking an obfuscated cipher by injecting faults extwp3-001-2.pdf 81K Cryptanalysis of LILI-128 fmirza-report.pdf 241K Block Ciphers And Cryptanalysis frogAES2pub.pdf 195K Cryptanalysis of FROG fse98.pdf 190K Differential Cryptanalysis of the ICE Encrypting Algorithm heurlang.pdf 34K Heuristic Language Analysis: Techniques and Applications icrijndael.pdf 204K Improved Cryptanalysis of Rijndael idea.pdf 191K The Block Cipher IDEA initial_securid_analysis.pdf 129K Initial Cryptanalysis of the RSA SecurID Algorithm keliherPhD.pdf 714K Linear Cryptanalysis of Substitution-Permutation Networks keysched-crypto96.pdf 220K Key-Schedule Cryptanalysis of IDEA, G-DES, GOST, SAFER, and Triple-DES keysched-icics97.pdf 218K Related-Key Cryptanalysis of 3-WAY, Biham-DES, CAST, DES-X, NewDES, RC2, and TEA loki97.pdf 87K Weaknesses in LOKI97 md5-cryptanalysis.txt 5.8K Analysis and Design of Cryptographic Hash Functions mmthesis-side-channel.pdf 816K Techniques of Side Channel Cryptanalysis muxfsr.pdf 134K A Faster Attack on Certain Stream Ciphers natarara.pdf 151K Differential CryptAnalysis paper-design-vulnerabilities.pdf 108K Cryptographic Design Vulnerabilities provsec.pdf 145K Weak Keys pseudorandom_number.pdf 219K Cryptanalytic Attacks on Pseudorandom Number Generators rc5.pdf 202K Improved Differential Attacks on RC5 rc5diff.pdf 153K repetition_codes.pdf 68K Breaking Block Ciphers using Repetition Codes rsa.txt 6.3K RSA: Attacking the cryptosystem sshtiming.pdf 317K Timing Analysis of Keystrokes and Timing Attacks on SSH ssl-timing.pdf 144K Remote Timing Attacks are Practical trunc_dif_saf.pdf 184K Truncated Differentials of SAFER
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TESTIMONY BY GEOFFREY S. GOODFELLOWBefore the Subcommittee on Transportation, Aviation and Materials on the subject of Telecommunications Security and Privacy.
26 September 1983
Table of Contents 1. Introduction 2. The Nature of Computer Hackers and Hacking. 3. What Can and Should Be Done to Help Abate The Unsavory Hacking Problem? 4. Let Us Not Lull Ourselves into a False Sense of Security. 5. Recommendations 6. Biography (The Making of a Hacker)
1.IntroductionMy name is Geoffrey S. Goodfellow. I am primarily employed by the Computer Science Laboratory at SRI International, Menlo Park, California. For the past 10 years at SRI, I have been involved in research efforts related with packet switched computer network communication systems, protocols and security technologies. I have also been involved in various operating and sub-system development projects. Currently, my responsibilities include a position as Principle Investigator of SRI's involvement in a Department of Defense program aimed at developing and proving secure computer systems, that operate at different security levels and communicate via networks. A detailed biography of my career from 7th grade school where I discovered computers (which eventually lead to my permanent abandonment of the formal educational system during high school) to how I got to where I am today with no degrees or any type of equivalency to my name is included at the end of my testimony. I am a coauthor of the Hacker's Dictionary -- A Guide to the World of Computer Wizards, a new book being published this fall. THE STATEMENTS INCLUDED HEREIN ARE MY OWN AND DO NOT NECESSARILY REPRESENT THOSE OF SRI INTERNATIONAL OR ANY CLIENTS OF SRI.
2. The Nature of Computer Hackers and Hacking.The primary nature of a computer hacker can be defined as follows: - A person who enjoys learning or knowing the details of computer systems and how to stretch their capabilities, as opposed to most users of computers, who prefer to learn or know only the minimum amount necessary in order to get their job done. - One who programs computers enthusiastically, for the sheer fun of it, and gets a non professional amount of enjoyment out of using them. - A person capable of appreciating the irony and beauty (i.e.`hack value') of a program. - A person who is good at programming quickly or is an expert on aparticular program. (This definition and the proceeding ones are correlated, and people who fit them congregate). Unfortunately, though, hacking has an unsavory faction to it: - A malicious or inquisitive meddler (i.e. `poacher') who tries to discover information by poking around.For example, a "password hacker" is one who tries, possibly by deceptive or illegal means, to discover other people's computer passwords. - A "network hacker" is one who tries to learn about the computer network (possibly because he wants to interfere--one can tell the difference only by context, tone of voice and manner of approach). [...]
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