Electronic signature device, and trading method and trading system thereof
A technology of electronic signature equipment and transaction method, which is applied in the electronic field, can solve problems such as the inability to realize multiple offline transactions, and achieve the effect of improving security
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Embodiment 1
[0038] figure 1 It is a flowchart of a transaction method for an electronic signature device provided in this embodiment. figure 1 The shown method embodiment includes the following steps S11 to S13:
[0039] Step S11, the electronic signature device sends a transaction request to the server, wherein the transaction request includes at least: transaction amount.
[0040] In this embodiment, the electronic signature device may be an electronic device with a signature function, for example, a smart card with a signature function (bus card, bank card, shopping card, etc.), an ICBC U-shield, and the like. In an optional implementation manner of this embodiment, the electronic signature device may establish a connection with an external device (such as a PC or a mobile terminal, etc.), and the transaction request is sent to the server through the external device. Alternatively, the electronic signature device has a wired or wireless interface, establishes a wired or wireless conn...
Embodiment 2
[0068] figure 2 It is a schematic structural diagram of a trading system provided in this embodiment. Such as figure 2 As shown, the transaction system includes an electronic signature device 20 and a server 30 , wherein the electronic signature device 20 includes: a communication module 201 , an acquisition module 202 and a security module 203 .
[0069] The communication module 201 is used to send the transaction request to the server 30, wherein the transaction request includes at least: transaction amount; the acquisition module 202 is used to receive at least one first unit data packet from the server 30, wherein each first unit data The package represents one currency denomination among multiple currency denominations, and the sum of the currency denominations represented by the at least one first unit data package is equal to the transaction amount; the security module 203 is configured to store the at least one first unit data package.
[0070] In this embodiment, ...
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