So we put forward an algorithm of dual concurrent signature and design an electronic payment protocol without the trusted third party (TTP).

通过以上分析研究，本文提出了“双重的同时生效签名”算法，设计了无可信第三方的电子支付协议。

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This payment protocol is specially suitable for mobile devices of weaker computation capability which cannot execute public-key algorithm easily.

该协议特别适用于计算能力较弱、不宜执行公钥密码算法的手持移动设备中。

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