security fundamentals for e commerce phần 7 pptx

... server). The Via request or response header is used by intermediaries (e. g., proxies) to indicate the intermediate protocols and recipients between the cli- ent and the server (request), and between the ... HTTP request). 266 Security Fundamentals for E- Commerce 16 Web Server Security Access control management on the Web server side is even more difficult than on the Web client s...

Ngày tải lên: 14/08/2014, 18:21

... Data Hassler, Vesna Security fundamentals for e- commerce.  (Artech House computer security series) 1. Business enterprisesComputer networks Security measures 2. Electronic commerce Security measures ... encrypted; • Each key be used only once. This is exactly the case with the one-time pad. Unfortunately, it makes key management extremely difficult, since new keys must be exch...

Ngày tải lên: 14/08/2014, 18:21

... only) are public 44 Security Fundamentals for E- Commerce • affiliationChanged: some fields in the certificate have changed (e. g., subject name); • superseded: the certificate has been replaced by ... dif- ference between the last CRL and the new one. A delta-CRL contains new entries that have to be added to the previous CRL, as well as information about the entries to be deleted fr...

Ngày tải lên: 14/08/2014, 18:21

... stolen coins. There are, however, some mechanisms to prevent stealing of coins, and they are used to implement the corresponding payment security service. The three digital money security services ... 7 Digital Money Security Digital money represents a new payment instrument for e- commerce. More than any other payment instrument, it demands development of a variety of new securi...

Ngày tải lên: 14/08/2014, 18:21

... are 142 Security Fundamentals for E- Commerce not the case, so we have, for example, a public switched telephone network, a mobile telephone network, and the Internet. However, there are already ... Chapter 1 showed the placement of security services and mechanisms in the OSI reference model. Connection-oriented security serv- ices apply to end-to-end connections. More specific...

Ngày tải lên: 14/08/2014, 18:21

... appended to it before transmission. If higher level protocols do not use sequence numbers, a sequence number can be appended to the SDU before MAC is computed. Sequence numbers provide replay/reordering ... random seed (one to 16 characters long). These two values, the pass-phrase and the seed, are used as input for the generation of one-time Network Access Layer Security 177 (pass-phras...

Ngày tải lên: 14/08/2014, 18:21

... ServerKeyEx- change message. The ServerKeyExchange message contains a public key for 230 Security Fundamentals for E- Commerce Client Server ClientHello [ChangeCipherSpec] Finished Certificate ClientKeyExchange CertificateVerify [ChangeCipherSpec] Finished ServerHello Certificate CertificateRequest ServerHelloDone Figure ... ServerKeyExchange message can also be sent after the serv...

Ngày tải lên: 14/08/2014, 18:21

... Inspection Before JDK 1.2 was released, browsers needed some means of providing a more flexible security policy than the very restrictive sandbox model. There are several techniques for achieving ... the current stack frame. • checkPrivilege(resource) is called by the system before accessing the resource. This method searches the stack for the enabled- privilege(resource) annotation. Th...

Ngày tải lên: 14/08/2014, 18:21

... credentials to the gatekeeper. The gatekeeper verifies whether the credentials are valid by passing them to the credential checker. If the credentials are valid, the capability service creates ... commercial relationships. Roles are implemented with digital 326 Security Fundamentals for E- Commerce Code time Gatekeeper Credential checker Capability service request with credentials ch...

Ngày tải lên: 14/08/2014, 18:21

... mechanisms, 5 Security message exchange, 169 Security parameter index, 1 97, 203, 236 Security policy, 5 Security recovery, 8 Security services, 56 Security testing, 25152 Security zone, 316 Segment, ... the sandbox security model, strong bytecode verification and firewalls between cardlets (see also the previous section). Another interesting development in the smart card an...

Ngày tải lên: 14/08/2014, 18:21