J. Su and J. D. Tygar. "Building blocks for atomicity in electronic commerce." Proceedings of the 6th USENIX security symposium:97, 1996.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....that their trusted agents are not generic. Each controller must be programmed to carry out a specific protocol, which may be different from agent to agent. The deployment and management of such heterogeneous agents, and the maintenance of their trustworthiness, may be difficult. Also, Su and Tygar [14] used trusted agents to solve certain fault tolerance problems. Examples of other electronic commerce applications that use non generic trusted agents are Millicent [4] and NetBill [12] In Millicent, client pay vendor with vendor s scrip obtained from a broker. The brokers are entities trusted to ....

J. Su and J.D. Tygar. Building blocks for atomicity in electronic commerce. In Proceedings of USENIX Security Symposium, 1996.

....from that transaction. The protocol that we define in this paper addresses the first two of these; the last would require the complete definition of the system to ensure that all message references are properly constrained. Two other types of secure message atomicity protocols are discussed in [12]. Encryption based protocols guarantee atomicity by having processes encrypt all messages that they send, and then using a trusted third party to distribute the keys once all messages are acknowledged by the receiver. Authority based protocols guarantee atomicity by having processes send all ....

Jiawen Su and J. D. Tygar. Building Blocks for Atomicity in Electronic Commerce. In The 6th Usenix Security Symposium, pages 97--102, July 1996.

....none may be. isolation Either all messages in a transaction may be referenced by other transactions, or none may be. verifiable causality The sender and receiver of a message can verify the sequence of messages transmitted between the two processes prior to that message. Atomicity, discussed in [14] and [13] ensures either that all parties to a transaction receive their goods, or that none do. For instance, credit card transactions are not normally atomic, since the customer receives the merchandise before the merchant is paid. This lack of atomicity allows for fraudulent transactions. The ....

Jiawen Su and J. D. Tygar. Building blocks for atomicity in electronic commerce. In The 6th Usenix Security Symposium, pages 97-- 102. Usenix, July 1996.

....none may be. isolation Either all messages in a transaction may be referenced by other transactions, or none may be. verifiable causality The sender and receiver of a message can verify the sequence of messages transmitted between the two processes prior to that message. Atomicity, discussed in [14] and [13] ensures either that all parties to a transaction receive their goods, or that none do. For instance, credit card transactions are not normally atomic, since the customer receives the merchandise before the merchant is paid. This lack of atomicity allows for fraudulent transactions. The ....

Jiawen Su and J. D. Tygar. Building Blocks for Atomicity in Electronic Commerce. In The 6th Usenix Security Symposium, pages 97--102, July 1996.

....that their trusted agents are not generic. Each controller must be programmed to carry out a specific protocol, which may be different from agent to agent. The deployment and management of such heterogeneous agents, and the maintenance of their trustworthiness, may be difficult. Also, Su and Tygar [17] used trusted agents to guarantee the atomicity of electronic commerce transactions. Examples of other electronic commerce applications that use non generic trusted agents are Millicent [4] and NetBill [15] In Millicent, clients pay vendors with vendor s scrip obtained from a broker. The brokers ....

J. Su and J.D. Tygar. Building blocks for atomicity in electronic commerce. In Proceedings of USENIX Security Symposium, 1996.

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J. Su and J. D. Tygar. "Building blocks for atomicity in electronic commerce." Proceedings of the 6th USENIX security symposium:97, 1996.

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