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When using asymmetric encryption algorithm,for two trading parties to conduct e-business,they need to use two keys.
Industry
A sector of the economy that is made up of manufacturing, production, or provision of services within a specific domain of activity or expertise.
Marginal Revenue
The supplementary income received from the sale of an additional unit of a product or service.
Price
The money value projected, needed, or surrendered in purchase of something.
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