security fundamentals for e commerce phần 5 doc

... 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 ... denotes concatenation): response = MD5(identifier || shared_secret || challenge) When the authenticator receives the response packet, it computes the response value in the same way and com...

Ngày tải lên: 14/08/2014, 18:21

... personalized). MExE is network-bearer independent, so different bearers may be deployed (e. g., SMS, GPRS). It can make WAP-enabled devices capable of offering a wider range of features with greater security ... bottlenecks to the development of new e- commerce services (e. g., network speed and thin clients in m -commerce) . Security enhancements often introduce an additional impairme...

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Fundamentals for E- Commerce • affiliationChanged: some fields in the certificate have changed (e. g., subject name); • superseded: the certificate has been replaced by ...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

... chap- ter, these new services are defined. The definitions result from a generaliza- tion of the payment security techniques used in existing electronic payment systems. 5. 1 Payment Security Services This ... 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...

Ngày tải lên: 14/08/2014, 18:21

... switched telephone network, a mobile telephone network, and the Internet. However, there are already cer- tain services that cross the boundaries between these networks. For example, one can send ... Payment Handler that the Merchant agrees with the payment. After the Payment Request message, one or more Payment Exchange messages can be exchanged between the Consumer and the Payment Han- dl...

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...

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... 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

... 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 ... possibly unsafe languages. Therefore, the first Java security checks are performed by the byte- code verifier to verify whether the Java bytecode conforms to Java language rules (format che...

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