public key encryption and hash functions

... and CA2(KuCA1) Bob:  Uses CA2’s public key to verify CA1’s public key  Uses CA1’s public key to verify Alice’s public key J Wang Computer Network Security Theory and Practice Springer 2009 A CA ... store and manage these public and private keys?  Private -key rings   A table in which each row represents a record of a particular user: key ID, owner’s name, public key, encrypted private key, ... get the other users’ public keys    Published in a special Website or by emails Cannot ensure true ownership of a public key Public- key certificates to authenticate public keys   Issued by...

Ngày tải lên: 17/02/2014, 14:20

... replaces private key cryptography Public- Key Cryptography • public- key/ two -key/ asymmetric cryptography involves the use of two keys: • a public- key, which may be known by anybody, and can be used ... claiming is sent by sender Public- Key Cryptography • probably most significant advance in • • • • the 3000 year history of cryptography uses two keys – a public key and a private key asymmetric since ... community Public- Key Characteristics • Public- Key algorithms rely on two keys with the characteristics that it is: • computationally infeasible to find decryption key knowing only algorithm & encryption...

Ngày tải lên: 29/03/2014, 15:20

... Plaintext Encryption algorithm Public and private key Ciphertext Decryption algorithm Henric Johnson 15 Encryption using Public- Key system Henric Johnson 16 Authentication using PublicKey System ... to Message Authentication • Secure Hash Functions and HMAC • Public- Key Cryptography Principles • Public- Key Cryptography Algorithms • Digital Signatures • Key Management Henric Johnson Authentication ... One-way HASH function Henric Johnson One-way HASH function • Secret value is added before the hash and removed before transmission Henric Johnson Secure HASH Functions • • Purpose of the HASH function...

Ngày tải lên: 29/03/2014, 16:20

... family life and sexuality, mental and emotional health, injury prevention and safety, nutrition and weight problems, substance use and abuse, personal health, and the prevention and control of ... science knowledge and techniques that are relevant to the understanding of physical health and illness and the application of this knowledge and these techniques to prevention and treatment, as ... years of age and older from the community and health organizations to discuss and share health information and community concerns and issues about the exposure to hazardous substances and how they...

Ngày tải lên: 05/10/2012, 09:47

... title, aims and objectives, scope, methods and design of the study Chapter II introduces an overview of English adjectives with the definitions of adjectives and their semantic and syntactic functions ... and He wore dirty and old shoes I have a young and beautiful sister When there more than two adjectives, they may be separated by commas and apart from the last adjective which separated by and ... He wore dirty, wet, old and worn shoes But, there are some fixed phrases of adjectives which are often linked by and : old and musty with, a long and winding road, hard and fast rules When the...

Ngày tải lên: 10/04/2013, 14:46

Ngày tải lên: 18/10/2013, 17:15

... domain, and then click OK q In the Certification Authority page, verify the CA and computer names, and then click Next r s View and install the certificate In the Certificate Friendly Name and Description ... All Rights Reserved Designing a Public Key Infrastructure Tasks Detailed Steps Verify the installation of the certificate x In the console tree, expand Personal, and then click Certificates y In ... Designing a Public Key Infrastructure Tasks Request a new certificate named Web Client that uses Microsoft Base Cryptographic Provider v1.0 as the cryptographic service provider and that uses...

Ngày tải lên: 19/10/2013, 02:15

... IRn and let f1 , , fm be convex functions Let also and w1 , , wm ≥ Then w1 f1 + · · · + wm fm and max1≤i≤m fi (x) are convex functions More generally, let {fi }i∈I be a family of convex functions ... if and only if S is R convex Moreover,  f is proper and convex  S ⊆ I n nonempty and convex R =⇒ f + δS is proper and convex  dom f ∩ S = ∅ We have a correspondence between convex sets and ... Convex sets and convex functions taking the infinity value Passing from sets to functions A common device to construct convex functions on IRn is to construct a convex set F in IRn+1 and then take...

Ngày tải lên: 23/10/2013, 15:20

... (2000) Public conceptions of mental illness in 1950 and 1996: what is mental illness and is it to be feared? Journal of Health and Social Behavior, 41, 188–207 197 Public attitudes, stigma and ... 1998; Nunnally, 1961) and over most of this time public attitude surveys have been carried out (Cumming and Cumming, 1965; Star, What the Public Thinks About Mental Health and Mental Illness, Paper ... relatively authoritarian personality, and among people who believe that the world is basically just (and so people get what they deserve) (Crandall and Eshleman, 2003; Crandall et al., 2002) Such emotional...

Ngày tải lên: 01/11/2013, 09:20

... "News", channelNames[2] = "Classics", and so on This is important to understand as we progress NOTE For more information on arrays, see Lesson 6, "Creating and Manipulating Data." Let's create ... from a Function Call Not only functions simply execute sets of actions; you can also use them like miniprograms within your movie, processing information sent to them and returning values Take a ... called To understand this, take a look at how this function is called in the following script: var idealCircumstances:Boolean = buyCD(19, "Friday"); if(idealCircumstances == true){ gotoAndPlay("Happiness");...

Ngày tải lên: 07/11/2013, 15:15

... determination of the rms value and the average power MATLAB has two functions, quad and quad8, for performing numerical function integration 6.1.1 MATLAB Functions quad and quad8 The quad function ... domain and by using the Kirchoff voltage and current laws The unknown voltages and currents are solved using matrix techniques Given a network function or transfer function, MATLAB has functions ... than the quad at handling functions with “soft” singularities such as ∫ xdx Suppose we want to find q given as b q = ∫ funct ( x )dx a The general forms of quad and quad8 functions that can...

Ngày tải lên: 23/01/2014, 03:20

... Stuart S Nagel 54 Handbook of Regulation and Administrative Law, edited by David H Rosenbloom and Richard D Schwartz 55 Handbook of Bureaucracy, edited by Ali Farazmand 56 Handbook of Public Sector ... Handbook of Administrative Communication, edited by James L Garnett and Alexander Kouzmin 64 Public Budgeting and Finance: Fourth Edition, edited by Robert T Golembiewski and Jack Rabin 65 Handbook ... Lynch and Todd J Dicker 67 Handbook of Public Finance, edited by Fred Thompson and Mark T Green 68 Organizational Behavior and Public Management: Third Edition, Michael L Vasu, Debra W Stewart, and...

Ngày tải lên: 15/02/2014, 19:20

... Data Encryption algorithm Design Criteria 2.2 Data Encryption Standard 2.3 Multiple DES 2.4 Advanced Encryption Standard 2.5 Standard Block-Cipher Modes of Operations 2.6 Stream Ciphers 2.7 Key ... Theory and Practice Springer 2009 Chapter Outline        2.1 Data Encryption algorithm Design Criteria 2.2 Data Encryption Standard 2.3 Multiple DES 2.4 Advanced Encryption Standard 2.5 Standard ... Data Encryption algorithm Design Criteria 2.2 Data Encryption Standard 2.3 Multiple DES 2.4 Advanced Encryption Standard 2.5 Standard Block-Cipher Modes of Operations 2.6 Stream Ciphers 2.7 Key...

Ngày tải lên: 17/02/2014, 14:20

... Distribution of Public Keys  There are several techniques proposed for the distribution of public keys: – Public announcement – Publicly available directory – Public key authority – Public key certificates ... shared key?  Two types of key establishment: – Key Agreement – Key Distribution Key Distribution  Key Agreement protocols: the key isn’t determined until after the protocol is performed  Key ... pretend to be User A, but really announce User B’s public key Public Directory Service  Idea: Have a public directory or “phone book” of public keys This directory is under the control/maintenance...

Ngày tải lên: 17/02/2014, 15:20

... disfluencies She identifies and defines three distinct parts of a speech disfluency, referred to as the reparandum, the interregnum and the repair Consider the following utterance: reparandum Related work ... in the past; the work of Johnson and Charniak (2004) first explores such an approach Johnson et al (2004) adds some handwritten rules to the noisy channel model and use a maximum entropy approach, ... always be present; and up of disfluent material Although they are inter- the repair to Denver replaces the reparandum ested not only in disfluency but also a syntactic analShriberg and Stolcke (1998)...

Ngày tải lên: 20/02/2014, 04:20

... United Nations and serves as the main economic and social development centre for the United Nations in Asia and the Pacific Its mandate is to foster cooperation between its 53 members and associate ... Tjerah Leonardo KEY ECONOMIC DEVELOPMENTS AND PROSPECTS IN THE ASIA-PACIFIC REGION 2008 United Nations ESCAP New York, 2007 ECONOMIC AND SOCIAL COMMIS SION FOR ASIA AND THE PACIFIC i KEY ECONOMIC ... somewhat reduced growth North and Central Asia experienced rapid and broad-based growth from energy exports and domestic demand supported by energy revenues South and South-West Asia benefited...

Ngày tải lên: 21/02/2014, 01:20

... work (Chambers and Jurafsky, 2008; Chambers and Jurafsky, 2009; McIntyre and Lapata, 2009; McIntyre and Lapata, 2010), these event chains are identified by running a coreference system and a dependency ... The work of McIntyre and Lapata followed in this same paradigm, (McIntyre and Lapata, 2009; McIntyre and Lapata, 2010), collecting chains of events by looking at entities and the sequence of verbs ... Chambers and Jurafsky, which combined a dependency parser with coreference resolution to collect event script statistics and predict script events (Chambers and Jurafsky, 2008; Chambers and Jurafsky,...

Ngày tải lên: 22/02/2014, 02:20

... 113 Reconfiguring Public Administration The changing face of public administration E -public administration? 115 116 123 Speed, Time and the Future Technology and time E-government and time intensification ... e-government can and does generate new insights into the way in which we think about and design public and social policy, how government policy and services are implemented and managed, the relationship ... and Government 27 domain of reality, and to establish ‘in the world of persons and things’ spaces and devices for acting upon those entities of which they dream and scheme (1990a: 8) Miller and...

Ngày tải lên: 06/03/2014, 06:21