This requires a secure IT environment where all partners in the supply chain can exchange information, ensure data authentication, and contribute to the accuracy and certification of the pedigree.

这需要一个可靠的IT环境，供应链中的所有业务伙伴可以在这个环境中交换信息，确保数据的真实性和完整性，从而确保药品来源是准确真实的。

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In the process of information exchange, it is not necessary to pass any confidential information and the scheme does not need a secure channel between each participant and the dealer.

在信息交互过程中不需要传递任何秘密信息，系统无需维持专门的安全信道。

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As companies create increasingly far-flung teams and commerce becomes more global, demand for secure ways to exchange information will only rise.

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BlackBerry Bold 9930 also offers Near Field Communications (NFC) support for a secure exchange of information between NFC-enabled devices over a very short distance.

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Dr Naor thinks that computerised versions of his method could have widespread applications in areas such as banking, where the secure exchange of information requires the comparison of passwords.

ECONOMIST: Cryptography