security fundamentals for e commerce phần 2 ppt

... 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Fundamentals for E- Commerce • affiliationChanged: some fields in the certificate have changed (e. g., subject name); • superseded: the certificate has been replaced by another; • cessationOfOperation: ... same holds for subtraction. When two elements from GF () 2 4 are multiplied, the result of the multiplication must also be an element of GF 34 Security Fu...

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 ... separate, secure channel (e. g., a sealed envelope), or it must be sent encrypted. For the encryption of symmetric keys in transfer, a public key mechanism can be used (see...

Ngày tải lên: 14/08/2014, 18:21

... 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). 26 6 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...

Ngày tải lên: 14/08/2014, 18:21

... protect against reuse of, for example, payment instruction messages. If a customer sends his credit card information as payment, the message, even in encrypted 82 Security Fundamentals for E- Commerce CyberCash, 2 Secure ... if everything has gone well, the payee sends a payment receipt (Payees Payment Receipt) to the payer. In this way the payee cannot later deny that the pay...

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

... 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 ... computer and send the L2TP packets. In this case the L2TP tunnel is established between the sender and the host running the L2TP server software in the receivers LAN. This case is referre...

Ngày tải lên: 14/08/2014, 18:21

... ServerKeyEx- change message. The ServerKeyExchange message contains a public key for 23 0 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 se...

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 ... can also be generated for other possibly unsafe languages. Therefore, the first Java security checks are performed by the byte- code verifier to verify whether the Java bytecode conform...

Ngày tải lên: 14/08/2014, 18:21

... commercial relationships. Roles are implemented with digital 326 Security Fundamentals for E- Commerce Code time Gatekeeper Credential checker Capability service request with credentials check credentials create ... requirements may be specified in the requestors cre- dentials (e. g., the agent owners credentials) or in an object reference (e. g., the agent reference). Mobile Age...

Ngày tải lên: 14/08/2014, 18:21

... mechanisms, 5 Security message exchange, 169 Security parameter index, 197, 20 3, 23 6 Security policy, 5 Security recovery, 8 Security services, 56 Security testing, 25 1 52 Security zone, 316 Segment, ... 301 Fault injection, 25 2 FCS. See Frame check sequence FDM. See Frequency division multiplexing Feedback, 22 Feistel network, 20 , 23 , 24 Fermats Little Theor...

Ngày tải lên: 14/08/2014, 18:21