Handbook of Applied Cryptography - chap12

... use of number of ↓ Protocol timestamps messages point-to-point key update none optional 1-3 Shamir’s no-key protocol none no 3 Kerberos KDC yes 4 Needham-Schroeder shared-key KDC no 5 Otway-Rees ... possibility of precomputation to reduce on-line computational complexity. 6. third party requirements. Considerations include (see §13.2.4): (a) requirement of an on-line (real-time), off-line, or ... message-independent protocols. 12.13 Remark (message-independentvs. non-interactive) Message-independent protocols include non-interactive protocols (zero-pass and one-pass protocols, i.e., those involving...

Handbook of Applied Cryptography - chap9

... problem of preserving the integrity of a potentially large message is thus reduced to that of a small ﬁxed-size hash- value. Since the existence of collisions is guaranteed in many-to-one mappings, ... security of a subset of the MDCs subsequently discussed in this section. Similar to the case of block ciphers for encryption (e.g. 8- or 1 2- round DES vs. 16-round DES), security of MDCs often comes ... decryption of y using k yields x. (However, a “black-box” which computes f(x, k) for ﬁxed, externally-unknown k is a one-way function of x.) In contrast, f(x, k) is a one-way function of k;giveny...

Handbook of Applied Cryptography - chap10

... attacks, 5 5 Both chosen-ciphertext and chosen-plaintext attacks are of concern for challenge-response techniques based on symmetric-key encryption. Handbook of Applied Cryptography by A. Menezes, ... entropy) Suppose passwords consist of strings of 7-bit ASCII characters. Each has a numeric value in the range 0-1 27. (When 8-bit characters are used, val- ues 12 8-2 55composethe extended character ... equally probable, then the entropy is maximal and equals the base-2 logarithm of the number of possible passwords. Handbook of Applied Cryptography by A. Menezes, P. van Oorschot and S. Vanstone....

Handbook of Applied Cryptography - chap11

... while digital signatures with appendix are applied to messages of arbitrary length. The one-way function h in Algorithm 11.5 is Handbook of Applied Cryptography by A. Menezes, P. van Oorschot ... ratio of the logarithm(base2) of the size of the signingspaceM S to the logarithm (base 2) of the size of M R , the image space of the redundancy function. Hence, the bandwidthefﬁciency is deter- ... digital signature mechanisms can be further subdivided into one-time signature schemes (§11.6) and multiple-use schemes. Handbook of Applied Cryptography by A. Menezes, P. van Oorschot and S. Vanstone....

Handbook of Applied Cryptography - chap13

... protocol run(c) off-lineon-line[optional][optional]AAAin-lineTTPTTPTTPoff-lineFigure 13.2:In-line, on-line, and off-line third parties.In-line third parties are of particular interest ... properties of escrow systems include:1. applicability to store-and-forward vs. real-time user communications2. capability of real-time decryption of user trafﬁc3. requirement of tamper-resistant ... be an on-line third party, but the certiﬁcationauthority is not.13.4 Remark (pros and cons: in-line, on-line,off-line) Protocols with off-linethird parties usu-ally involve fewer real-time message...

Handbook of Applied Cryptography - chap15

... non-repudiation of origin (denial of being theoriginator of a message), non-repudiation of delivery (denial of having received a mes-sage), and non-repudiation associated with the actions of ... draft 10118–4 includes MASH-1 and MASH-2 (see Algorithm 9.56).ISO/IEC 11770: This multi-part standard addresses generic key management and spe- Handbook of Applied Cryptography by A. Menezes, ... patent contains twenty-seven (27) claims.(ix) On-line/off-line digital signaturesThe Micali-Goldreich-Even patent (5,016,274) teaches on-line/off-line digital signatureschemes. The patent was...

Handbook of Applied Cryptography - chap14

... applications. The ef - ciency of a particular cryptographic scheme based on any one of these algebraic structureswill dependonanumberoffactors, such as parametersize, time-memorytradeoffs,process-ing power ... the case of the additive group Zm, the time required to do modular multiplication can be im-proved at the expense of precomputing a table of residues modulo m. For a left-to-right k-ary exponentiation ... (after division of Aby R), A<2m as required.14.34 Note (computational efﬁciency of Montgomery reduction) Step 2.1 and step 2.2 of Algo-rithm 14.32 require a total of n +1single-precision multiplications....

Handbook of Applied cryptography

... fac-tored is of a special form; these are called special-purpose factoring algorithms. The run-ning times of such algorithmstypically depend on certain properties of the factors of n. Ex-amples ... one having a worst-case running time of O(lg3n) bit operations, and a sec-ond having an average-case running time of O(lg2n) bit operations. A more recent algo-rithm of Bernstein [121] ... number of bits in the kthlargest prime fac-tor of a random m-bit number is asymptotically equivalent to the average length of the kthlongest cycle in a permutation on m objects.Floyd’s cycle-ﬁnding...

Tài liệu Handbook of Applied Cryptography docx

...

Tài liệu Handbook of Applied Cryptography - chap1 ppt

... originator.1.8 Public-key cryptography The concept of public-key encryption is simple and elegant, but has far-reaching conse-quences.1.8.1 Public-key encryptionLet {Ee: e ∈K}be a set of encryption ... abstractconcepts of this section in mind as concrete methods are presented. Handbook of Applied Cryptography by A. Menezes, P. van Oorschot and S. Vanstone.10 Ch. 1 Overview of Cryptography 1.3.2 ... subset of C. Handbook of Applied Cryptography by A. Menezes, P. van Oorschot and S. Vanstone.12 Ch. 1 Overview of Cryptography • An encryption scheme consists of a set {Ee: e ∈K }of encryption transformationsand...

Xem thêm

Từ khóa: the handbook of brain theory and neural networks handbook of couples therapy handbook of mechanical engineering handbook of english grammar the standard handbook of engineering calculations handbook of image and video processing the oxford handbook of ethical theory a handbook of commercial correspondence handbook of practical analysis handbook of comparative world steel standards handbook of process chromatography handbook of good english handbook of residue analytical methods for agrochemicals volume 1 and volume 2 clinical handbook of couples therapy gurman clinical handbook of couples therapy 4th edition Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit ĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN ĐỒ ÁN NGHIÊN CỨU CÔNG NGHỆ KẾT NỐI VÔ TUYẾN CỰ LY XA, CÔNG SUẤT THẤP LPWAN Quản lý hoạt động học tập của học sinh theo hướng phát triển kỹ năng học tập hợp tác tại các trường phổ thông dân tộc bán trú huyện ba chẽ, tỉnh quảng ninh Trả hồ sơ điều tra bổ sung đối với các tội xâm phạm sở hữu có tính chất chiếm đoạt theo pháp luật Tố tụng hình sự Việt Nam từ thực tiễn thành phố Hồ Chí Minh (Luận văn thạc sĩ)Phát triển du lịch bền vững trên cơ sở bảo vệ môi trường tự nhiên vịnh hạ long Nghiên cứu, xây dựng phần mềm smartscan và ứng dụng trong bảo vệ mạng máy tính chuyên dùng Nghiên cứu tổng hợp các oxit hỗn hợp kích thƣớc nanomet ce 0 75 zr0 25o2 , ce 0 5 zr0 5o2 và khảo sát hoạt tính quang xúc tác của chúng Định tội danh từ thực tiễn huyện Cần Giuộc, tỉnh Long An (Luận văn thạc sĩ)Tìm hiểu công cụ đánh giá hệ thống đảm bảo an toàn hệ thống thông tin Thơ nôm tứ tuyệt trào phúng hồ xuân hương Sở hữu ruộng đất và kinh tế nông nghiệp châu ôn (lạng sơn) nửa đầu thế kỷ XIX BT Tieng anh 6 UNIT 2 Giáo án Sinh học 11 bài 15: Tiêu hóa ở động vật chuong 1 tong quan quan tri rui ro Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật Chiến lược marketing tại ngân hàng Agribank chi nhánh Sài Gòn từ 2013-2015 Đổi mới quản lý tài chính trong hoạt động khoa học xã hội trường hợp viện hàn lâm khoa học xã hội việt nam TÁI CHẾ NHỰA VÀ QUẢN LÝ CHẤT THẢI Ở HOA KỲ QUẢN LÝ VÀ TÁI CHẾ NHỰA Ở HOA KỲ