可转账信用证是为了满足国际贸易的需求而设计的。

The transferable credit is designed to meet the requirements of international trade.

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我行证实，此证是可撤销的。

We confirm that it is opened as revocable documentary.

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我们证明该方案在随机预言机模型中是可证安全的。

Then we prove that our scheme satisfies these security notions in the random oracle model.

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我们证明该方案在随机预言机模型中是可证安全的。

Then we prove that our scheme satisfies these security notions in the random oracle model.

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