Holdings: Public key cryptography

Public key cryptography: theory and practice

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Bibliographic Details
Main Authors:	Das, Abhijt (Author), Madhavan, C. E. Veni (Author)
Format:	Book
Language:	English
Published:	Chennai [u.a.] Pearson Education 2009
Subjects:	Mathematik Public key cryptography Telecommunication > Security measures > Mathematics Computers > Access control > Mathematics Kryptologie Public-Key-Kryptosystem
Online Access:	Inhaltsverzeichnis
Item Description:	Includes bibliographical references and index
Physical Description:	XXII, 562 S.
ISBN:	9788131708323

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adam_text	Contents Preface xiii Notations xv 1 Overview 1 1.1 Introduction ......................................... 2 1.2 Common Cryptographie Primitives ............................. 2 1.2.1 The Classical Problem: Secure Transmission of Messages ............ 2 Symmetric-key or secret-key cryptography .................... 4 Asymmetric-key or public-key cryptography ................... 4 1.2.2 Key Exchange ................................... 5 1.2.3 Digital Signatures . ................................. 5 1.2.4 Entity Authentication ................................ 6 1.2.5 Secret Sharing ................................... 8 1.2.6 Hashing ....................................... 8 1.2.7 Certification ..................................... 9 1.3 Public-key Cryptography ................................... 9 1.3.1 The Mathematical Problems ............................ 9 1.3.2 Realization of Key Pairs .............................. 10 1.3.3 Public-key Cryptanalysis .............................. 11 1.4 Some Cryptographic Terms ................................. 11 1.4.1 Models of Attacks ................................. 12 1.4.2 Models of Passive Attacks ............................. 12 1.4.3 Public Versus Private Algorithms .......................... 13 2 Mathematical Concepts 15 2.1 Introduction ......................................... 16 2.2 Sets, Relations and Functions ................................ 16 2.2.1 Set Operations ................................... 17 2.2.2 Relations ...................................... 17 2.2.3 Functions ...................................... 18 2.2.4 The Axioms of Mathematics ............................ 19 Exercise Set 2.2 ....................................... 20 2.3 Groups ............................................ 21 2.3.1 Definition and Basic Properties ........................... 21 2.3.2 Subgroups, Cosets and Quotient Groups ...................... 23 2.3.3 Homomorphisms .................................. 25 2.3.4 Generators and Orders ............................... 26 2.3.5 Sylow s Theorem .................................. 27 Exercise Set 2.3....................................... 29 2.4 Rings ............................................. 31 2.4.1 Definition and Basic Properties ........................... 31 2.4.2 Subrings, Ideals and Quotient Rings ........................ 34 2.4.3 Homomorphisms .................................. 37 2.4.4 Factorization in Rings ............................... 39 Exercise Set 2.4 ....................................... 42 2.5 Integers ............................................ 44 Contents 2.5.1 Divisibility ..................................... 44 2.5.2 Congruences .................................... 45 2.5.3 Quadratic Residues ................................. 48 2.5.4 Some Assorted Topics ............................... 52 The prime number theorem ............................. 53 Density of smooth integers ............................. 54 The extended Riemann hypothesis ......................... 54 Exercise Set 2.5 ....................................... 56 2.6 Polynomials ......................................... 57 2.6.1 Elementary Properties ............................... 58 2.6.2 Roots of Polynomials ................................ 59 2.6.3 Algebraic Elements and Extensions ........................ 61 Exercise Set 2.6 ....................................... 63 2.7 Vector Spaces and Modules ................................. 64 2.7.1 Vector Spaces .................................... 65 2.7.2 Modules ....................................... 69 2.7.3 Algebras ...................................... 71 Exercise Set 2.7 ....................................... 72 2.8 Fields ............................................. 74 2.8.1 Properties of Field Extensions .........................■ · 74 2.8.2 Splitting Fields and Algebraic Closure ....................... 76 2.8.3 Elements of Galois Theory ............................. 78 Exercise Set 2.8 ....................................... 79 2.9 Finite Fields ......................................... 80 2.9.1 Existence and Uniqueness of Finite Fields ..................... 80 2.9.2 Polynomials over Finite Fields ........................... 82 2.9.3 Representation of Finite Fields ........................... 85 Exercise Set 2.9 ....................................... 88 2.10 Affine and Protective Curves ................................ . 90 2.10.1 Plane Curves .................................... 90 2.10.2 Polynomial and Rational Functions on Plane Curves ............... 92 2.10.3 Maps Between Plane Curves ................ ............ 95 2.10.4 Divisors on Plane Curves .............................. 95 Exercise Set 2.10....................................... 97 2.11 EllipticCurves ........................................ 98 2.11.1 The Weierstrass Equation .............................. 98 2.11.2 The Elliptic Curve Group .............................. 101 2.11.3 Elliptic Curves over Finite Fields .......................... 106 Exercise Set 2.11...................... . ................ 107 2.12 HyperellipticCurves ..................... . ............... Ill 2.12.1 The Defining Equations ............................... Ill 2.12.2 Polynomial and Rational Functions ....... : . ................ 112 2.12.3 TheJacobian .................................... 115 Exercise Set 2.12....................................... 118 2.13 Number Fields ........................................ 119 2.13.1 Some Commutative Algebra . . ................. . :....... 120 Ideal arithmetic ................................... 120 Localization ..................................... 120 Integral dependence ................................ 121 Contents Noetherian rings..................................123 Dedekind domains .................................125 2.13.2 Number Fields and Rings..............................125 2.13.3 Unique Factorization of Ideals...........................131 2.13.4 Norms of Ideals ...................................135 2.13.5 Rational Primes in Number Rings .........................137 2.13.6 Units in a Number Ring ..............................139 Exercise Set 2.13.......................................139 2.14 p-adic Numbers .......................................143 2.14.1 The Arithmetic of p-adic Numbers .........................143 2.14.2 The p-adic Valuation ................................145 2.14.3 Hensel s Lemma ..................................149 Exercise Set 2.14.......................................151 2.15 Statistical Methods ......................................154 2.15.1 Random Variables and Their Probability Distributions ..............154 2.15.2 Operations on Random Variables ..........................155 2.15.3 Expectation, Variance and Correlation .......................159 2.15.4 Some Famous Probability Distributions ......................162 Uniform distribution ................................162 Bernoulli distribution ................................163 Normal distribution ..................................163 2.15.5 Sample Mean, Variation and Correlation ......................164 Exercise Set 2.15........................................ 165 Algebraic and Number-theoretic Computations - 173 3.1 Introduction .........................................174 3.2 Complexity Issues ......................................174 3.2.1 Order Notations ...................................175 3.2.2 Randomized Algorithms ..............................177 3.2.3 Reduction Between Computational Problems ...................178 Exercise Set 3.2 .......................................179 3.3 Multiple-precision Integer Arithmetic ............................180 3.3.1 Representation of Large Integers ..........................181 3.3.2 Basic Arithmetic Operations ............................181 Addition and subtraction ..............................182 Multiplication ....................................183 Squaring ......................................184 Fast multiplication .................................184 Division .......................................185 Bit-wise operations .................................187 3.3.3 GCD ........................................187 3.3.4 Modular Arithmetic .................................190 Modular exponentiation ..............................190 Montgomery exponentiation ............................192 Exercise Set 3.3 .......................................193 3.4 Elementary Number-theoretic Computations ........................195 3.4.1 Primality Testing ..................................195 Deterministic primality proving ..........................197 3.4.2 Generating Random Primes ............................199 v¡ Contents 3.4.3 Modular Square Roots ...............................200 Exercise Set 3.4 .......................................201 3.5 Arithmetic in Finite Fields ..................................204 3.5.1 Arithmetic in the Ring F2[X] ............................204 3.5.2 Finite Fields of Characteristic 2 ...........................208 3.5.3 Selecting Suitable Finite Fields ...........................210 3.5.4 Factoring Polynomials over Finite Fields .....................212 Square-free factorization ..............................212 Distinct-degree factorization ............................213 Equal-degree factorization .............................214 Exercise Set 3.5....................................... 215 3.6 Arithmetic on Elliptic Curves ................................218 3.6.1 Point Arithmetic ..................................218 3.6.2 Counting Points on Elliptic Curves .........................219 The SEA algorithm .................................219 The Satoh-FGH algorithm .............................221 3.6.3 Choosing Good Elliptic Curves ..........................223 3.7 Arithmetic on Hyperelliptic Curves .............................224 3.7.1 · Arithmetic in the Jacobian .............................225 3.7.2 Counting Points in Jacobians of Hyperelliptic Curves ...............225 Exercise Set 3.7.......................................228 3.8 Random Numbers ......................................228 3.8.1 Pseudorandom Bit Generators ...........................228 3.8.2 Cryptographically Strong Pseudorandom Bit Generators .............229 3.8.3 Seeding Pseudorandom Bit Generators ...................... . 230 Exercise Set 3.8.......................................231 The Intractable Mathematical Problems 237 4.1 Introduction .........................................238 4.2 The Problems at a Glance ..............·....................239 Exercise Set 4.2.......................................242 4.3 The Integer Factorization Problem ..............................243 4.3.1 Older Algorithms ..................................244 Trial division .....................................244 Pollard s rho method ................................244 Pollard sp - 1 method ...............................245 Williams ρ +1 method ..............................247 4.3.2 The Quadratic Sieve Method ............................248 The basic algoritam .................................248 Sieving .......................................249 Incomplete sieving .................................251 Large prime variation ................................251 The multiple polynomial quadratic sieve ...........-.■...........252 Parallelization ....................................253 TWINKLE: Shamir s fectoring device ....................... 254 4.3.3 Factorization Using Elliptic Curves ........................255 4.3.4 The Number Field Sieve Method ..........................258 Selecting die polynomial ƒ (X) ...........................259 Construction of Q ...................................259 Contents vii Constraction of Q .................................259 Construction of W . . ...............................260 Computing the factorization of a + ba .......................260 Sieving .......................................261 The running time of the SNFSM ..........................262 Exercise Set 4.3 .......................................262 4.4 The Finite Field Discrete Logarithm Problem ........................264 4.4.1 Square Root Methods ................................264 Shanks baby-step-giant-step method .......................265 Pollard s rho method ................................265 The Pohlig-Hellman method ............................266 4.4.2 The Index Calculus Method ............................267 4.4.3 Algorithms for Prime Fields ............................268 The basic ICM ...................................268 The linear sieve method ..............................270 The number field sieve method ...........................272 4.4.4 Algorithms for Fields of Characteristic 2......................273 The basic ICM ...................................274. The adaptation of the linear sieve method .....................275 Coppersmith s algorithm ..............................276 Exercise Set 4.4 ........................................279 4.5 The Elliptic Curve Discrete Logarithm Problem (ECDLP) .................281 4.5.1 The MOV Reduction ................................282 The correctness of the algorithm ..........................283 Choosing к .....................................284 Computing em(P, R) ................................284 4.5.2 The SmartASS Method ...............................286 4.5.3 The Xedni Calculus Method ............................289 Exercise Set 4.5 .......................................291 4.6 The Hyperelliptic Curve Discrete Logarithm Problem ...................292 4.6.1 Choosing the Factor Base ..............................293 4.6.2 Checking the Smoothness of a Divisor .......................293 4.6.3 The Algorithm ...................................294 4.7 Solving Large Sparse Linear Systems over Finite Rings ..................294 4.7.1 Structured Gaussian Elimination ..........................296 4.7.2 The Conjugate Gradient Method ..........................297 4.7.3 The Lanczos Method ................................298 4.7.4 The Wiedemann Method ..............................299 4.8 The Subset Sum Problem ..................................300 4.8.1 The Low-Density Subset Sum Problem ......................301 4.8.2 The Lattice-Basis Reduction Algorithm ......................302 Exercise Set 4.8 .......................................304 Cryptographic Algorithms 309 5.1 Introduction .........................................310 5.2 Secure Transmission of Messages ..............................310 5.2.1 The RSA Public-key Encryption Algorithm ....................310 RSA key pair ....................................310 RSA encryption ...................................312 viii Contents RSA decryption ...................................312 5.2.2 The Rabin Public-key Encryption Algorithm ...................313 Rabin key pair ...................................313 Rabin encryption ..................................314 Rabin decryption ..................................314 5.2.3 The Goldwasser-Micali Encryption Algorithm ..................315 Goldwasser-Micali key pair ............................315 Goldwasser-Micali encryption ...........................315 Goldwasser-Micali decryption ...........................316 5.2.4 The Blum-Goldwasser Encryption Algorithm ...................317 Blum-Goldwasser key pair .............................317 Blum-Goldwasser encryption ...........................318 Blum-Goldwasser decryption ...........................318 5.2.5 The ElGamal Public-key Encryption Algorithm ..................319 ElGamal key pair ..................................319 ElGamal encryption ................................320 ElGamal decryption ................................320 5.2.6 The Chor-Rivest Public-key Encryption Algorithm ................321 Chor-Rivest key pair ................................321 Chor-Rivest encryption ...............................322 Chor-Rivest decryption ...............................322 5.2.7 The XTR Public-key Encryption Algorithm ....................323 XTR key pair ....................................327 XTR encryption ...................................327 XTR decryption ...................................328 5.2.8 The NTRU Public-key Encryption Algorithm ...................328 NTRUkeypair ...................................328 NTRU encryption ..................................330 NTRU decryption ..................................331 Exercise Set 5.2 .......................................332 5.3 Key Exchange ........................................334 5.3.1 Basic Key-Exchange Protocols ...........................334 The Diffie-Hellman key-exchange protocol ....................334 Small-subgroup attacks ...............................335 Cofactor exponentiation ..............................336 5.3.2 Authenticated Key-Exchange Protocols . . ....................336 Unknown key-share attacks .............................336 The Menezes-Qu-Vanstone key-exchange protocol ................ 338 Exercise Set 5.3 .......................................339 5.4 Digital Signatures ......................................340 5.4.1 The RSA Digital Signature Algorithm .......................341 5.4.2 The Rabin Digital Signature Algorithm ......................342 5.4.3 The ElGamal Digital Signature Algorithm .....................343 5.4.4 The Schnorr Digital Signature Algorithm ............ . . . . . . ; . . 344 5.4.5 The Nyberg-Rueppel Digital Signature Algorithm ................345 5.4.6 The Digital Signature Algorithm (DSA) ...................... 346 5.4.7 The Elliptic Curve Digital Signature Algorithm (ECDSA) ......:..... 348 5.4.8 The XTR Signature Algorithm ...........................349 5.4.9 The NTRUSign Algorithm ............. . ... . . . .........352 Contents ix 5.4.10 Blind Signature Schemes .............................. 355 Chaum s RSA blind signature protocol ....................... 355 The Schnorr blind signature protocol ........................ 356 The Okamoto-Schnorr blind signature protocol .................. 357 5.4.11 Undeniable Signature Schemes ........................... 357 The Chaum-Van Antwerpen undeniable signature scheme ............ 358 RSA-based undeniable signature scheme ..................... 360 5.4.12 Signcryption .................................... 362 Exercise Set 5.4 ....................................... 364 5.5 Entity Authentication ..................................... 366 5.5.1 Passwords ...................................... 366 5.5.2 Challenge-Response Algorithms .......................... 368 A challenge-response scheme based on encryption-decryption .......... 368 A challenge-response scheme based on digital signatures ............. 369 Mutual authentication ................................ 370 5.5.3 Zero-Knowledge Protocols ............................. 370 The Feige-Fiat-Shamir (FFS) protocol ...................... 372 The Guillou-Quisquater(GQ) protocol ...................... 373 The Schnorr protocol ................................ 374 Exercise Set 5.5 ....................................... 375 6 Standards 381 6.1 Introduction .........................................382 6.2 IEEE Standards ........................................382 6.2.1 The Data Types ...................................383 Bit strings ......................................383 Octet strings ....................................383 Integers ........................................384 Prime finite fields ..................................384 Finite fields of characteristic 2...........................384 Extension fields of odd characteristics .......................384 Elliptic curves ....................................385 Elliptic curve points ................................385 Convolution polynomial rings ...........................386 6.2.2 Conversion Among Data Types ...........................386 Converting bit strings to octet strings (BS2OS) ..................386 Converting octet strings to bit strings (OS2BS) ..................387 Converting integers to bit strings (I2BS) ......................388 Converting bit strings to integers (BS2I) ......................388 Converting integers to octet strings (I2OS) .....................388 Converting octet strings to integers (OS2I) .....................389 Converting field elements to octet strings (FE2OS) ................389 Converting octet strings to field elements (OS2FE) ................389 Converting field elements to integers (FE2I) ....................389 Converting elliptic curve points to octet strings (EC2OS) .............389 Converting octet strings to elliptic curve points (OS2EC) .............390 Converting ring elements to octet strings (RE2OS) ................390 Converting octet strings to ring elements (OS2RE) ................391 Converting ring elements to bit strings (RE2BS) ..................391 Contents Converting bit strings to ring elements (BS2RE)..................391 Converting binary elements to octet strings (BE2OS) ...............392 Converting octet strings to binary elements (OS2BE) ...............392 6.3 RSA Standards ........................................ 393 6.3.1 PKCS#1 ...................................... 393 RSAkeys ...................................... 394 RSA key operations ................................. 394 RSAES-OAEP encryption scheme .........................395 RSASSA-PSS signature scheme with appendix ..................398 A mask-generation fonction ............................399 The RSA encryption scheme ofPKCS#l, Version 1.5..............400 The RSA signature scheme of PKCS#1, Version 1.5...............401 6.3.2 PKCS#3 ......................................402 Cryptanalysis in Practice 405 7.1 Introduction .........................................406 7.2 Side-Channel Attacks ....................................407 7.2.1 TimingAttack ...................................407 Details of the attack .................................407 Countermeasures ..................................410 7.2.2 Power Analysis ...................................411 Simple power analysis (SPA) ............................411 Differential power analysis (DPA).........................413 Countermeasures ..................................415 7.2.3 Fault Analysis ....................................416 Fault attack on RSA based on CRT .........................417 Fault attack on RSA without CRT .........................417 Fault attack on the Rabin digital signature algorithm ...............418 Fault attack on DSA ................................418 Fault attack on the ElGamal signature scheme ...................419 Fault attack on the Feige-Fiat-Shamir identification protocol ...........420 Countermeasures ..................................422 Exercise Set 7.2 .......................................423 7.3 Backdoor Attacks ......................................424 7.3.1 AttacksonRSA ...................................425 Hiding prime factor .................................425 Hiding small private exponent ...........................428 Hiding small public exponent ...........................429 7.3.2 An Attack on ElGamal Signatures .........................430 7.3.3 An Attack on ElGamal Encryption .........................431 7.3.4 Countermeasures ..................................432 Exercise Set 7 J .......................................432 Quantum Computation and Cryptography 437 8.1 Introduction . . . . *. . ...................................438 8.2 Quantum Computation ....................................438 8.2.1 System .......................................439 8.2.2 Entanglement ....................................440 8.2.3 Evolution ......................................442 8.2.4 Measurement ....................................443 Contents xi 8.2.5 The Deutsch Algorithm ...............................445 Exercise Set 8.2 .......................................446 8.3 Quantum Cryptography ...................................448 Exercise Set 8.3 .......................................451 8.4 Quantum Cryptanalysis ...................................452 8.4.1 Shor s Algorithm for Computing Period ......................453 8.4.2 Breaking RSA ...................................455 8.4.3 Factoring Integers ..................................455 8.4.4 Computing Discrete Logarithms ..........................456 Exercise Set 8.4 .......................................458 Appendices A Symmetric Techniques 465 A.I Introduction .........................................466 A.2 Block Ciphers ........................................466 A.2.1 A Case Study: DES.................................467 DES key schedule ..................................468 DES encryption ...................................468 DES decryption ...................................471 DES test vectors ..................................471 Cryptanalysis of DES................................471 A.2.2 The Advanced Standard: AES ...........................472 Data representation .................................472 AES key schedule ..................................473 AES encryption ...................................474 AES decryption ...................................476 AES test vectors ..................................478 Cryptanalysis of AES ................................478 A.2.3 Multiple Encryption ................................478 A.2.4 Modes of Operation .................................480 The ECB mode ...................................480 The CBC mode ...................................481 The CFB mode ...................................481 The OFB mode ...................................482 Exercise Set A.2 .......................................483 A.3 Stream Ciphers ........................................486 A.3.1 Linear Feedback Shift Registers ..........................487 A.3.2 Stream Ciphers Based on LFSRs ..........................489 Exercise Set A.3 .......................................490 A.4 Hash Functions ........................................491 A.4.1 Merkle s Meta Method ...............................492 A.4.2 The Secure Hash Algorithm ............................494 Exercise Set A.4 .......................................495 В Key Exchange in Sensor Networks 497 B.I btroduction ..........................................498 B.2 Security Issues in a Sensor Network .............................498 B.3 The Basic Bootstrapping Framework ............................500 B.4 The Basic Random Key Predistribution Scheme .......................502 xii Contents B.4. 1 The ç-composite Scheme .............................. 504 B.4.2 Multi-path Key Reinforcement ........................... 505 B.5 Random Pairwise Scheme .................................. 506 B.5.1 Multi-hop Range Extension ............................ 507 B.6 Polynomial-pool-based Key Predistribution ......................... 508 B.6.1 Pairwise Key Predistribution ............................ 509 B.6.2 Grid-based Key Predistribution ........................... 510 B.7 Matrix-based Key Predistribution .............................. 511 B.8 Location-aware Key Predistribution ............................. 513 B.8.1 Closest Pairwise Keys Scheme ........................... 513 B.8.2 Location-aware Polynomial-pool-based Scheme .................. 515 С Complexity Theory and Cryptography 517 C.I Introduction .........................................518 C.2 Provably Difficult Computational Problems Are not Suitable ................519 Exercise Set C.2 .......................................519 C.3 One-way Functions and the Complexity Class UP .....................520 Exercise Set C.3 .......................................522 D Hints to Selected Exercises 523 References 531 Index 547
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id	DE-604.BV035693055
illustrated	Not Illustrated
indexdate	2024-07-09T21:43:34Z
institution	BVB
isbn	9788131708323
language	English
lccn	2009012766
oai_aleph_id	oai:aleph.bib-bvb.de:BVB01-017747100
oclc_num	317778105
open_access_boolean
owner	DE-703
owner_facet	DE-703
physical	XXII, 562 S.
publishDate	2009
publishDateSearch	2009
publishDateSort	2009
publisher	Pearson Education
record_format	marc
spelling	Das, Abhijt Verfasser aut Public key cryptography theory and practice Abhijit Das, C. E. Veni Madhavan Chennai [u.a.] Pearson Education 2009 XXII, 562 S. txt rdacontent n rdamedia nc rdacarrier Includes bibliographical references and index Mathematik Public key cryptography Telecommunication Security measures Mathematics Computers Access control Mathematics Kryptologie (DE-588)4033329-2 gnd rswk-swf Public-Key-Kryptosystem (DE-588)4209133-0 gnd rswk-swf Kryptologie (DE-588)4033329-2 s Public-Key-Kryptosystem (DE-588)4209133-0 s 1\p DE-604 Madhavan, C. E. Veni Verfasser aut Digitalisierung UB Bayreuth application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=017747100&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis 1\p cgwrk 20201028 DE-101 https://d-nb.info/provenance/plan#cgwrk
spellingShingle	Das, Abhijt Madhavan, C. E. Veni Public key cryptography theory and practice Mathematik Public key cryptography Telecommunication Security measures Mathematics Computers Access control Mathematics Kryptologie (DE-588)4033329-2 gnd Public-Key-Kryptosystem (DE-588)4209133-0 gnd
subject_GND	(DE-588)4033329-2 (DE-588)4209133-0
title	Public key cryptography theory and practice
title_auth	Public key cryptography theory and practice
title_exact_search	Public key cryptography theory and practice
title_full	Public key cryptography theory and practice Abhijit Das, C. E. Veni Madhavan
title_fullStr	Public key cryptography theory and practice Abhijit Das, C. E. Veni Madhavan
title_full_unstemmed	Public key cryptography theory and practice Abhijit Das, C. E. Veni Madhavan
title_short	Public key cryptography
title_sort	public key cryptography theory and practice
title_sub	theory and practice
topic	Mathematik Public key cryptography Telecommunication Security measures Mathematics Computers Access control Mathematics Kryptologie (DE-588)4033329-2 gnd Public-Key-Kryptosystem (DE-588)4209133-0 gnd
topic_facet	Mathematik Public key cryptography Telecommunication Security measures Mathematics Computers Access control Mathematics Kryptologie Public-Key-Kryptosystem
url	http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=017747100&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
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