Protocols for secure electronic commerce

... the http command GET news.html to 27 28 HTTP Essentials Figure 2. 18 ᮣ Virtual hosting lets many Web addresses share the same Web server This configuration is typical in ISPs that provide Web ... GET URI Client GET URI Via: proxy1 proxy1 20 0 OK Via: proxy2, proxy1 GET URI Via: proxy1, proxy2 proxy2 20 0 OK Via: proxy2 origin 20 0 OK ᮤ Figure 2. 23 Proxy servers create or u...

Ngày tải lên: 14/08/2014, 11:21

... section 3. 2 .32 ) provides the time of the resource With version 1.1 of http, systems are required to use the following format for date values that they generate This format is defined in rfc 11 23 Date: ... chunked format HTTP Messages Table 3. 8 Rules for Determining the End of an HTTP Message Priority Rule If the response has a status code that does not permit message bodies (...

Ngày tải lên: 14/08/2014, 11:21

... 3 04 Not Modified 305 Use Proxy 306 (unused) 307 Temporary Redirect 4xx Client Error 40 0 Bad Request 40 1 Unauthorized 40 2 Payment Required 40 3 Forbidden 40 4 Not Found 40 5 Method Not Allowed 40 6 ... Acceptable 40 7 Proxy Authentication Required 40 8 Request Timeout 40 9 Conflict 41 0 Gone 41 1 Length Required 41 2 Precondition Failed 41 3 Request Entity Too Large 41 4 Re...

Ngày tải lên: 14/08/2014, 11:21

... features tailored for http communications Finally, the chapter takes 129 130 HTTP Essentials a brief look at Secure -http (shttp) Originally developed about the same time as ssl, shttp defines extensions ... time 50 4 Gateway Timeout When a proxy server times out waiting for a response from another server, it returns a 50 4 Gateway Timeout status to the client 50 5 Version Not...

Ngày tải lên: 14/08/2014, 11:21

... port for each application it secures That is why the Web uses port 80 for standard http and port 443 for http secured by ssl With tls, however, it is now possible to support both secure and non -secure ... some confusion) Because secure http uses the same syntax as http, however, secure http does not Securing HTTP require its own default tcp port Instead, Secure h...

Ngày tải lên: 14/08/2014, 11:21

... They avoid forcing users to configure their browsers with proxy server information HTTP Essentials Web Client Internet Access Internet Router Router Web Client Transparent Cache Server Web Client ... ᮣ Web sites or Web hosting providers can deploy a network of reverse proxy cache servers throughout the Internet Reverse Proxy Cache Server Web Client Origin Web Server Accele...

Ngày tải lên: 14/08/2014, 11:21

... Proxies Max-Forwards 43% 28% 63% Pragma 86 % 83 % 100% Proxy-Authenticate 93% 44% 88 % Proxy-Authorization 93% 44% 88 % Range 64% 67% 63% Referer 64% 61% 50% Retry-After 43% 39% 50% Server 57% 83 % 63% ... Trailer 36% 17% 25% Transfer-Encoding 86 % 89 % 88 % Upgrade 29% 22% 38% User-Agent 93% 67% 100% Vary 43% 61% 63% Via 64% 44% 88 % Warning 50% 28% 63% WWW-Authenticate 86 % 94% 10...

Ngày tải lên: 14/08/2014, 11:21

... Task Force May 199 7 The original definition for http is still available on the Web site of the World Wide Web Consortium Tim Berners-Lee The Original http as defined in 199 1 Available at http: //www.w3.org /Protocols /http/ AsImplemented.html ... Summary World Wide Web Consortium Available at http: //www.w3.org /Protocols /http/ Forum/Reports/ Balachander Krishnamurthy and M...

Ngày tải lên: 14/08/2014, 11:21

... Secure http to identify the format of cryptographic information SHTTP-Privacy-Enhancements An http header used by Secure http to list privacy enhancements desired or used for a message SHTTP-Signature-Algorithms ... 180–182 http responses, 51–53 312 HTTP Essentials cooperating servers and, 26–37 http security mechanisms, 130 http servers, performance of, 108 http sess...

Ngày tải lên: 14/08/2014, 11:21

... Vary 11 1 3.2.50 Via 11 2 3.2. 51 Warning .11 3 3.2.52 WWW-Authenticate 11 4 3.3 Status Codes .11 5 3.3 .1 Informational (1xx) 11 7 3.3.2 Successful ... 10 Chapter 2: HTTP Operation 13 2 .1 Clients and Servers .13 2 .1. 1 Initiating Communication .14 2 .1. 2 Connections .15 2 .1. 3 Persistence 15 2 .1. 4 ... .13 0 4 .1. 1 Basic Authentication .13 0 4 .1. 2 Original Digest Authentica...

Ngày tải lên: 14/08/2014, 12:21

... (2006) Strategy for SW industry development  Legal environment  E -commerce Ordinance  Electronic Transaction Law (3/2006 effected)  ICT Law (drafted 2006) www.mot.gov.vn Legal environment & ... Policies regarding e -commerce      Strategy for ICT development (Govt Decision No 246) Master Plan for E -commerce development (2005) Master Plan for E-government developmen...

Ngày tải lên: 12/03/2013, 09:27

... the data flows from one a client machine to another client machine via a centralized server Typically, the data are stored in a database on the server The database also contains information about ... originally submitted it At this point, the data are modified and submitted again for approval For most organization, the approval process is done in Appendix A Infrastructure for...

Ngày tải lên: 02/07/2014, 15:02

... following components: Messenger for e-mail reading Composer for authoring HTML Web pages Collabora for news offerings Calendar for personal and group scheduling Netcaster for push delivery of Web pages ... Requirements for an Electronic Storefront Search for, discover, and compare products for purchase Select a product to be purchased and negotiate or determine its total pric...

Ngày tải lên: 31/07/2014, 17:20