TWI622946B - Offline message transmission method and system for avoiding lost information - Google Patents

Abstract

The present invention relates to an offline message delivery method and system for avoiding loss of information. The offline message delivery method includes: broadcasting a transaction message by a payer end; receiving the transaction message by a payee end and a witness end Receiving a receipt message from the payee end; receiving the receipt message by the payer end and the witness end; broadcasting a confirmation message to the payer end; the payee end and the witness end Receive the confirmation message. In this way, by confirming the message to the witness, it is ensured that the various types of messages stored in the payer and the payee are not tampered with, ensuring the rights of both parties to the transaction, and when the message is lost, By verifying the various types of messages backed up in the witness, verification reduces the risk of loss of information.

Description

Offline message delivery method and system for avoiding lost information

The present invention relates to a transaction method and system, and more particularly to an offline message delivery method and system for avoiding loss of information.

With the development of technology, people's methods of trading have gradually developed a way of making payments through mobile devices, in addition to direct payment by consumers or payment by credit card.

Referring to FIG. 6, the existing transaction method for payment by the mobile device is to send a transaction message to a payee end, that is, the merchant's electronic device, by a payer end, that is, the mobile device of the consumer. The merchant can connect to the Internet through the electronic device on the payee side, and make a payment to the financial institution according to the transaction message, so as to debit the consumer's account through the financial institution. At the same time, the payer's mobile device will also be connected to the Internet to inform the financial institution of the transaction message, so that the financial institution can deduct the consumer's account, thereby protecting the consumer's account and avoiding theft and causing the consumer to suffer losses. .

After the deduction is successful, the electronic device at the payee end transmits a receipt message to the mobile device of the payer, and the mobile device of the payer further transmits a confirmation message to the electronic device at the payee end after receiving the receipt message. . In this way, for the consumer, there is no need to carry bills of paper or coins on the body, and it can be directly consumed through the mobile device, providing a convenient way of consumption, and for the merchant, the merchant can avoid the change of the mistake, or The situation of insufficient change and the inability to change the zero, and the risk of avoiding carrying a large amount of cash, is beneficial to both parties to the transaction.

Payments through mobile devices must be made through online financial institutions to ensure the rights of both parties to the transaction. However, in the absence of a network environment or when the mobile device cannot access the Internet, neither the payer's consumer nor the payee's merchant can confirm through the financial institution to protect its own rights. If a malicious user tampers with the transaction message, receipt message or confirmation message, the consumer or merchant may suffer losses. In addition, the consumer on the payer side or the merchant on the payee side may lose the message due to external interference when transmitting the message of various transactions. If the subsequent connection can be made to the financial institution, if the message is lost. It cannot be carried out smoothly, causing inconvenience. Therefore, the prior art transaction method of payment through mobile devices still needs further improvement.

The present invention provides an offline message delivery method and system for avoiding loss of information, in view of the shortcomings of the above-mentioned transaction method of payment by mobile device, which cannot be confirmed by a financial institution to protect its own rights under offline conditions, so that the mobile device cannot be connected. When the line is connected to the network, the mobile device can still be used for consumption and the rights of both parties to the transaction can be ensured. The offline message delivery system includes: a payer end, which is a first electronic device and includes a first wireless module. And transmitting a transaction message through the first wireless module; a payee end is a second electronic device, including a second wireless module, and receiving the transaction message through the second wireless module After receiving the transaction message, the second wireless module broadcasts a receipt message through the second wireless module; wherein the payer further receives the receipt message through the second wireless module, and after receiving the receipt message, broadcasts the external message. a confirmation message; wherein the payee end further receives the confirmation message through the second wireless module; a witness A third electronic device system, comprising a third wireless module, and receiving the transaction message is transmitted through the third wireless module, the receipt of the message and the confirmation message.

The offline message delivery method for avoiding lost information is performed by a payer end, a payee end and a witness end. The offline message transfer method for avoiding lost information includes: broadcasting the external broadcast by the payer end Transaction message; receiving, by the payee end and the witness end, the transaction message; the payee end broadcasting an receipt message; receiving the receipt message by the payer end and the witness end; by the payer The terminal broadcasts a confirmation message to the outside; the confirmation message is received by the payee end and the witness.

The offline message transmission method and system for avoiding message loss according to the present invention uses the witness to back up various types of messages in the transaction process, and when the transaction is completed, the financial institution is required to make a payment, except for the payer side and the payee side. In addition to the various types of messages stored, the financial institution may further confirm the message to the witness to ensure that the various types of messages stored in the payer and the payee are not tampered with to ensure the rights of both parties.

In addition, in the process of transmitting various types of messages, the information may not be successfully transmitted due to external interference, resulting in loss of information. The present invention further has the witness side, and backs up various types of messages through the witness side, so that when the message is lost, the message can be verified by reading various types of messages backed up in the witness side, and the message is reduced. Lost risk.

The technical means adopted by the present invention for achieving the intended purpose are further explained below in conjunction with the drawings and preferred embodiments of the present invention.

Referring to FIG. 1 , the present invention is an offline message delivery method and system for avoiding loss of information. When a mobile device cannot be connected to the network, the user can still consume through the mobile device, and can ensure the transaction sides. rights and interests. The offline messaging system of the present invention comprises a payer end A, a payee end B and a witness end W. The payer end A is a first electronic device 10 and includes a first wireless module 11. The payee end B is a second electronic device 20 and includes a second wireless module 21 . The witness terminal W is a third electronic device 30 and includes a third wireless module 31.

The first electronic device 10 broadcasts a transaction message through the first wireless module 11 . The second electronic device 20 receives the transaction message through the second wireless module 21, and the second electronic device 20 broadcasts a receipt message through the second wireless module 21 after receiving the transaction message.

The first electronic device 10 further receives the receipt message through the first wireless module 11, and after receiving the receipt message, broadcasts a confirmation message through the first wireless module 11. The second electronic device 20 further receives the confirmation message through the second wireless module 21.

The third electronic device 30 receives the transaction message, the receipt message, and the confirmation message through the third wireless module 31. In the preferred embodiment, the first wireless module 11 of the first electronic device 10, the second wireless module 21 of the second electronic device 20, and the third wireless module of the third electronic device 30 are respectively A low-power Bluetooth module allows the first electronic device 10, the second electronic device 20, and the third electronic device 30 to externally broadcast and receive various types of messages through low-power Bluetooth.

The offline messaging system of the present invention backs up various types of messages in the transaction process through the witness terminal. When the transaction is completed, when the financial institution is requested to make a payment, in addition to the payer A and the payee B In addition to the various types of messages stored, the financial institution may further confirm the message to the witness, ensuring that the various types of messages stored in the payer A and the payee B have not been tampered with to ensure the rights of both parties. .

In addition, in the process of transmitting various types of messages, the information may not be successfully transmitted due to external interference, resulting in loss of information. The present invention further has the witness terminal W, and backs up various types of messages through the witness terminal W, so that when the message is lost, the message can be verified by reading various types of messages backed up in the witness terminal W. , reducing the risk of lost information.

Referring to FIG. 2, the offline messaging method of the present invention is executed by a payer end A, a payee end B, and a witness end W. The offline message passing method for avoiding lost information includes: The payer end A broadcasts a transaction message (S20); the payee end B and the witness end W receive the transaction message; the payee end B broadcasts a receipt message (S30); The payer end A and the witness end W receive the receipt message; the payer end A broadcasts a confirmation message (S40); the payee end B and the witness end W receive the confirmation message.

In the preferred embodiment, the payer A first encrypts a payer ID ID _A and a payer public key Pk _A through a third party private key T _Sk to generate a payer information C _A . Expressed as:

The payee end B first encrypts a payee number ID _B and a payee public key Pk _B through a third party private key T _Sk to generate a payee information C _B , which is represented by a symbol:

The third party private key T _Sk is issued by a trusted third party server, such as a banking server. The third party server is registered by the payer A and the payee B, and provides the payer ID ID _A of the payer _A and the payer ID _B of the payee _B.

In addition, the payee end B needs to further provide the payee public key Pk B of the payee _B to the server of the third party, and the payer end A downloads the receipt through the third party server. The public key Pk _B. Since the payer A transmits the transaction message, the transaction message needs to be encrypted by the payee public key Pk _B downloaded from the third party server. If it is offline, directly receive the payee public key Pk _B broadcasted by the payee _B , because the payee public key Pk _B broadcasted by the payee _{B is} not subject to the third party The server is authenticated, so it is impossible to confirm whether it has been tampered with. Therefore, the third party institution server downloads the payee public key Pk _B to confirm that the payee public key Pk _B is authenticated by the third party server.

Then, when the payer end A broadcasts the transaction message, the payer end A first encrypts a transaction data through a payer private key Sk _A , and the transaction data includes a verification token (Token). The sender ID number _B , the transaction amount ($) and the time stamp (Timestamp) are symbolized as:

And further encrypting the encrypted transaction data and the payer information C _A through the payee public key Pk _B downloaded from the third-party server to generate the transaction, and the payer A Broadcast the transaction message (symbol), which is symbolized as:

Since the payer _A encrypts the transaction data through the payer private key Sk _A, the transaction data can be guaranteed to be sent by the payer A, and then from the third party server. The downloaded payee public key Pk _B encrypts the encrypted transaction data and the payer information C _A so that only the payee B can be unlocked, and the payee B can identify whether the data is based on the unpacked data. Issued by the payer A.

In the technical field of general encryption and decryption, the file encrypted by the private key can be unlocked by the corresponding public key, and the file encrypted by the public key can be unlocked by the corresponding private key, thereby providing data encryption protection and corresponding The public key and the private key confirm the identity of the other party.

When the payee B receives the transaction message, the transaction message is further confirmed. The payee B decrypts the transaction message through a payee private key Sk _{B of the} payee _B to obtain the encrypted transaction data. And the payer information C _A , symbolized as:

Next, the payee B decrypts the payer information C _A through a third party public key T _Pk downloaded from the third party server to obtain the payer ID ID _A and the payer public key Pk _A , symbolized as:

Then, the payee end B can decrypt the encrypted transaction data through the payer public key Pk _A To obtain the transaction information, to confirm the transaction message, symbolized as:

Subsequently, when a message to the payee receipt foreign broadcasting terminal B, the terminal B based payee receipt of a first encrypted data through a private key of Sk _B payee, the receipt data includes a verification tag (the Token), payment The number ID _A , the processing number (Tid) and the time stamp (Timestamp) are symbolized as:

And further through the public key from the server to download the third-party payer Pk _A mechanism to encrypt data after receipt of the payee and the encrypted information C _B, to produce the receipt message (receipt), by the end of the payment by A The receipt message (receipt) is externally broadcast and is symbolized as:

When the payer terminal A receives the receipt message (receipt), the receipt message is further confirmed. The payer A decrypts the transaction message through the payer private key Sk _A of the payer _A to obtain the encrypted receipt data. And the payee information C _B , symbolized as:

Next, the payer A decrypts the payee information C _B through a third party public key T _Pk downloaded from the third party server to obtain the payee number ID _B and the payee public key. Pk _B , symbolized as:

Then, the payer A can decrypt the encrypted receipt data through the payee public key Pk _B To obtain the receipt information, thereby confirming the receipt message, symbolized as:

Finally, when the payer A broadcasts a confirmation message to the outside, the payer A first encrypts the transaction number (Tid) in the receipt data through a payer private key Sk _A , and further passes through the third party institution. The payer public key Pk _A downloaded by the server encrypts the encrypted processing number (Tid) to generate the confirmation message (confirm), and the payer end A broadcasts the confirmation message (confirm), which is symbolized as :

When the payee B receives the confirmation message, the confirmation message is further confirmed. The payee _B decrypts the confirmation message through the payee private key Sk B of the payee _B to obtain the encrypted transaction number (Tid), and obtains the payment obtained by decrypting the payer information C _A The public key Pk _A decrypts the encrypted processing number (Tid) to obtain the processing number (Tid), thereby confirming the confirmation message, which is symbolized as:

In this way, the offline message delivery method is completed, and the offline message delivery method of the present invention performs the above-mentioned encryption and decryption by not only backing up various types of messages through the witness side to ensure the rights of both parties of the transaction and reducing the risk of loss of the message. The process can ensure the confidentiality of the transaction content through the encryption and decryption of the public key and the private key in the process of offline transaction, and at the same time confirm the identity of both parties to further reduce the risk of offline transactions.

In the preferred embodiment, the number of the witnesses W may be one or more, and is exemplified when the number of the witnesses W is one, as shown in FIG. 3, in the offline message delivery method. The step of receiving the transaction message by the payee end B and the witness terminal W further includes the following sub-steps: confirming whether the payee end B receives the transaction message (S21); When receiving the transaction message, the client B confirms whether the witness terminal W receives the transaction message (S22); when the witness terminal W receives the transaction message, records a payee transaction code and a witness Transaction code (S221); wherein the payee transaction code is the number of the payee end B receiving the transaction signal, and the witness transaction code is the number of witnesses W receiving the transaction signal; the witness The terminal W broadcasts a first authentication message including the transaction message (S222); confirms whether the payee end B receives the first authentication message (S223); when the payee end B receives the first When the authentication message is issued, the payee B will witness the witness W Entering a witness list (S224), and recording the payee transaction code and the witness transaction code (S24), and the payee end B broadcasts the receipt message (S30); when the payee When the terminal B does not receive the first authentication message, the witness terminal W becomes an out-of-list witness (S225), and records the payee transaction code and the witness transaction code (S25), and the payment is received by the witness. The terminal B broadcasts the receipt message to the outside (S30); when the witness terminal W does not receive the transaction message, records the payee transaction code and the witness transaction code (S25), and the payee end B broadcasts the receipt message to the outside (S30).

In the preferred embodiment, the number of payee terminals B is one, and the number of witness terminals W is one.

In step S221, since both the payee end B and the witness end W receive the transaction signal, the number of the payee end B receiving the transaction signal is 1, and the witness of the transaction signal is received. The number of terminals W is 1.

In step S24, since both the payee end B and the witness end W receive the transaction signal, the number of the payee end B receiving the transaction signal is 1, and the witness of the transaction signal is received. The number of terminals W is 1.

In step S25, since the payee terminal B receives the transaction signal, and the witness terminal W does not receive the transaction signal, the number of the payee end B receiving the transaction signal is 1, and The number of witnesses W receiving the transaction signal is zero.

In addition, after confirming that the payee B receives the transaction message (S21), the method further includes the following sub-steps: when the payee B does not receive the transaction message, confirm the witness end Whether the W receives the transaction message (S23); when the witness terminal W receives the transaction message, records the payee transaction code and the witness transaction (S231); the witness terminal W broadcasts the transaction a first authentication message of the message (S232); confirming whether the payee end B receives the first authentication message (S233); when the payee end B receives the first authentication message, the payee The terminal B adds the witness terminal W to a witness list (S234), records the payee transaction code and the witness transaction code (S24), and the payee end B broadcasts the receipt message ( S30); when the payee end B does not receive the first authentication message, the witness end W becomes an out-of-list witness (S235), and records the payee transaction code and records the witness transaction code The number (S26), and the party A is broadcasted by the payer A to the outside (S20) When the witness terminal W does not receive the transaction message, the payee transaction code and the witness transaction code are recorded (S26), and the transaction message is re-published by the payer terminal A (S20).

In step S231, since the payee end B does not receive the transaction signal, and the witness terminal W receives the transaction signal, the number of the payee end B receiving the transaction signal is 0, and The number of witnesses W receiving the transaction signal is one.

In step S24, since both the payee end B and the witness end W receive the transaction signal, the number of the payee end B receiving the transaction signal is 1, and the witness of the transaction signal is received. The number of terminals W is 1.

In step S26, since neither the payee end B nor the witness end W receives the transaction signal, the number of the payee end B receiving the transaction signal is 0, and the transaction signal is received. The number of witnesses W is 0.

Referring to FIG. 4, in the step of receiving the receipt message by the payer A and the witness W, the offline message delivery method further includes the following substeps: confirming whether the payer A receives Receiving the receipt message (S31); when the payer terminal A receives the receipt message, confirming whether the witness terminal W receives the receipt message (S32); when the witness terminal W receives the receipt message, Recording a payer receipt code and a witness receipt code as the number of witnesses W receiving the receipt signal (S321); wherein the payer receipt code is the number of payer terminals A receiving the receipt signal, The witness receipt code is the number of witnesses W receiving the receipt signal; the witness terminal W broadcasts a second authentication message including the receipt message (S322); and confirms whether the payer A receives the first Second authentication message (S323); when the payer terminal A receives the second authentication message, the payer end A adds the witness terminal W to a witness list (S324), and records the payer receipt code And the witness According to the code (S34), the payer end A broadcasts the confirmation message (S40); when the payer end A does not receive the second authentication message, the witness end W becomes an out-of-list witness ( S325), and recording the payee receipt code and the witness receipt code (S35), and the payer end A broadcasts the confirmation message (S40); when the witness W does not receive the receipt message, The payer receipt code and the witness receipt code are recorded (S35), and the payer end A broadcasts the confirmation message (S40).

In the preferred embodiment, the number of payer terminals A is one, and the number of witness terminals W is one.

In step S321, since both the payer end A and the witness end W receive the receipt signal, the number of payer terminals A receiving the receipt signal is 1, and the witness end receiving the receipt signal is received. The number of W is 1.

In step S34, since both the payer end A and the witness end W receive the receipt signal, the number of payer terminals A receiving the receipt signal is 1, and the witness end receiving the receipt signal is received. The number of W is 1.

In step S35, since the payer terminal A receives the receipt signal, and the witness terminal W does not receive the receipt signal, the number of payer terminals A receiving the receipt signal is 1, and is received. The number of witnesses W of the receipt signal is zero.

In addition, after confirming whether the payer terminal A receives the receipt message (S31), the method further includes the following sub-steps: when the payer terminal A does not receive the receipt message, confirm whether the witness terminal W Receiving the receipt message (S33); when the witness terminal W receives the receipt message, recording the payer receipt code and the witness receipt code (S331); the witness terminal W broadcasts the receipt message a second authentication message (S332); confirming whether the payer A receives the second authentication message (S333); when the payer A receives the second authentication message, the payer A witnesses The terminal W joins a witness list (S334), and records the payer receipt code and the witness receipt code (S34), and the payer end A broadcasts the receipt message (S40); when the payer When the terminal A does not receive the second authentication message, the witness terminal W becomes an out-of-list witness (S335), and the payer receipt code and the witness receipt code (S36) are recorded, and the receipt is re-received. The terminal B broadcasts the receipt message to the outside (S30); When terminal W witness the receipt message is not received, the record code and the payer receipt witness receipt code (S36), and re-broadcasts the receipt of external message B (S30) of the payee terminal.

In step S331, since the payer terminal A does not receive the receipt signal, and the witness terminal W receives the receipt signal, the number of payer terminals A receiving the receipt signal is 0, and is received. The number of witnesses W of the receipt signal is 1.

In step S34, since both the payer end A and the witness end W receive the receipt signal, the number of payer terminals A receiving the receipt signal is 1, and the witness end receiving the receipt signal is received. The number of W is 1.

In step S36, since both the payer end A and the witness end W do not receive the receipt signal, the number of payer terminals A that received the receipt signal is 0, and the witness who receives the receipt signal The number of terminals W is zero.

Referring to FIG. 5, in the step of receiving the confirmation message by the payee end B and the witness terminal W of the offline message delivery method, the following substeps are further included: confirming the payee end B Whether the confirmation message is received (S41); when the payee terminal B receives the confirmation message, it is confirmed whether the witness terminal W receives the confirmation message (S42); when the witness terminal W receives the confirmation In the message, a payee confirmation code and a witness confirmation code are recorded (S421); wherein the payee confirms that the code is the number of payee B receiving the confirmation signal, and the witness confirms that the code is received The number of the witnesses W of the confirmation signal, the witness terminal W broadcasts a third authentication message including the confirmation message (S422); and confirms whether the payee terminal B receives the third authentication message (S423); When the payee end B receives the third authentication message, the payee end B adds the witness terminal W to a witness list (S324), and records the payee confirmation code and the witness. Confirm the code (S44) and complete the offline transaction (S50); When the client B does not receive the third authentication message, the witness terminal W becomes an external witness (S425), and the payee confirmation code and the witness confirmation code (S25) are recorded, and the offline is completed. Transaction (S50); When the witness W does not receive the confirmation message, the payee confirmation code and the witness confirmation code are recorded (S45), and the offline transaction is completed (S50).

In the preferred embodiment, the number of payee terminals B is one, and the number of witness terminals W is one.

In step S421, since both the payee end B and the witness end W receive the confirmation signal, the number of the payee end B receiving the confirmation signal is 1, and the witness receiving the confirmation signal is witnessed. The number of terminals W is 1.

In step S44, since both the payee end B and the witness end W receive the confirmation signal, the number of the payee end B receiving the confirmation signal is 1, and the witness receiving the confirmation signal is witnessed. The number of terminals W is 1.

In step S45, since the payee end B receives the confirmation signal, and the witness terminal W does not receive the confirmation signal, the number of the payee end B receiving the confirmation signal is 1, and The number of witnesses W receiving the confirmation signal is zero.

In addition, after confirming whether the payee B receives the confirmation message (S41), the method further includes the following sub-steps: when the payee B does not receive the confirmation message, confirm the witness end Whether the W receives the confirmation message (S43); when the witness terminal W receives the confirmation message, records the payee confirmation code and the witness confirmation code (S431); the witness terminal W includes the external broadcast Confirming a third authentication message of the message (S432); confirming whether the payee terminal B receives the third authentication message (S433); and when the payee terminal B receives the third authentication message, the payment is received The terminal B adds the witness terminal W to a witness list (S434), records the payee confirmation code and the witness confirmation code (S34), and completes the offline transaction (S50); when the payee When the terminal B does not receive the third authentication message, the witness terminal W becomes an out-of-list witness (S435), and records the payee confirmation code and the witness confirmation code (S46), and re-sends the payment. The terminal A broadcasts the confirmation message to the outside (S40); when the witness terminal W does not receive When the confirmation message, record the payee confirmation code and confirm the witness code (S46), and re-broadcast of the Foreign A confirmation message (S40) by the end of the payers.

In step S431, since the payee end B does not receive the confirmation signal, and the witness terminal W receives the confirmation signal, the number of the payee end B receiving the confirmation signal is 0, and The number of witnesses W receiving the confirmation signal is one.

In step S44, since both the payee end B and the witness end W receive the confirmation signal, the number of the payee end B receiving the confirmation signal is 1, and the witness receiving the confirmation signal is witnessed. The number of terminals W is 1.

In step S46, since both the payee end B and the witness end W do not receive the confirmation signal, the number of the payee end B receiving the confirmation signal is 0, and the confirmation signal is received. The number of witnesses W is 0.

The present invention can further perform this offline transaction by recording the payee transaction code, the witness transaction code, the payee receipt code, the witness receipt code, the payee confirmation code, and the witness confirmation code. Provide records as a reference for risk management.

In addition, in the preferred embodiment, the witness of the list on behalf of the payee B does not know that the witness has received the transaction message, the receipt message or the confirmation message, but the witness side W does receive the transaction message, the receipt message or the confirmation message, and keeps it backup, which becomes a potential witness and serves as a reference for risk management.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the present invention. A person skilled in the art can make some modifications or modifications to equivalent embodiments by using the above-disclosed technical contents without departing from the technical scope of the present invention, but without departing from the technical solution of the present invention, according to the present invention. Technical Substantials Any simple modifications, equivalent changes and modifications made to the above embodiments are still within the scope of the technical solutions of the present invention.

10‧‧‧First electronic device
11‧‧‧First wireless module
20‧‧‧Second first child device
21‧‧‧Second wireless module
30‧‧‧ Third electronic device
31‧‧‧ Third wireless module
A‧‧‧Payer side
B‧‧‧ Payee end
W‧‧‧ Witness side

1 is a system block diagram of an offline messaging system for avoiding loss of information according to the present invention. 2 is a schematic flow chart of an offline message delivery method for avoiding message loss according to the present invention. FIG. 3 is a schematic diagram of a process for confirming receipt of a transaction message by an offline message delivery method for avoiding loss of information according to the present invention. FIG. 4 is a schematic diagram of a process for confirming receipt of a receipt message by an offline message delivery method for avoiding loss of information according to the present invention. FIG. 5 is a schematic diagram of a process for confirming receipt of a confirmation message by an offline message delivery method for avoiding loss of information according to the present invention. FIG. 6 is a schematic flow chart of a transaction method for paying through a mobile device.

Claims (16)

An offline message delivery system for avoiding loss of information includes: a payer end, a first electronic device, comprising a first wireless module, and broadcasting a transaction message through the first wireless module; The second electronic device includes a second wireless module, and receives the transaction message through the second wireless module, and after receiving the transaction message, the second wireless module is externally Broadcasting a receipt message; wherein the payer further receives the receipt message through the second wireless module, and after receiving the receipt message, externally broadcasts a confirmation message; wherein the payee end transmits the second wireless mode The group further receives the confirmation message; a witness device is a third electronic device, including a third wireless module, and receives the transaction message, the receipt message and the confirmation message through the third wireless module. An offline message delivery method for avoiding loss of information is performed by a payer end, a payee end and a witness end, and the offline message transfer method for avoiding lost information includes: broadcasting by the payer end a transaction message; the transaction message is received by the payee end and the witness; the receipt is externally broadcasted by the payee; the receipt is received by the payer and the witness; The terminal broadcasts a confirmation message to the outside; the confirmation message is received by the payee end and the witness. The offline message delivery method of claim 2, wherein: the payer end first encrypts a payer number and a payer public key through a third party private key to generate a payer information; the payee end A payee number is first encrypted by a third party private key and a payee public key is generated to generate a payee information. The offline message delivery method of claim 3, wherein the payee end further provides the payee public key to a server of a third party for the payer to download the receipt through the third party server The public key of the person. The offline message delivery method according to claim 4, wherein: when the payer side broadcasts the transaction message externally, the payer end encrypts a transaction data by using a payer private key, and the transaction data includes a verification mark. , the payee number, the transaction amount, and the time stamp; the payer further encrypts the encrypted transaction data and the payer information through the payee public key downloaded from the third party server to generate the transaction message And the payer side broadcasts the transaction message externally. The offline message delivery method of claim 5, wherein: when the payee end receives the transaction message, the transaction message is further confirmed; the payee end decrypts the transaction message through a payee private key. Obtaining the encrypted transaction data and the payer information; the payee end decrypts the payer information through a third party public key downloaded from the third party server to obtain the payer number and the payer The public key; the payee end further decrypts the encrypted transaction data through the payer public key to obtain the transaction data, thereby confirming the transaction message. The offline message delivery method of claim 4, wherein: when the payee end broadcasts a receipt message, the payee end encrypts a receipt data by using a payee private key, the receipt data includes a verification mark, a payer number, a process number, and a time stamp; the payee end further encrypts the encrypted receipt data and the payee information by using a payer public key downloaded from the third party server to generate The receipt message, and the payer side broadcasts the receipt message externally. The offline message delivery method of claim 7, wherein: when the payer end receives the receipt message, the receipt message is further confirmed; the payer side transmits the transaction message through the payer private key of the payer side Decrypting to obtain the encrypted receipt data and the payee information; the payer decrypts the payee information through a third party public key downloaded from the third party server to obtain the payee The number and the payee public key; the payer further decrypts the encrypted receipt data through the payee public key to obtain the receipt data, thereby confirming the receipt message. The offline message delivery method of claim 4, wherein: when the payer side broadcasts a confirmation message to the outside party, the payer end first encrypts the transaction number in the receipt data through a payer private key; the payer The terminal further encrypts the encrypted transaction number by using the payer public key downloaded from the third-party server to generate the confirmation message, and the paymenter externally broadcasts the confirmation message. The offline message delivery method according to claim 9, wherein: when the payee end receives the confirmation message, the confirmation message is further confirmed; the payee end passes the payee private key of the payee side The confirmation message is decrypted to obtain the encrypted processing number, and the encrypted transaction number is decrypted by the payer public key obtained by decrypting the payer information to obtain the processing number, thereby confirming the confirmation message. The offline message delivery method according to any one of claims 2 to 10, wherein in the step of receiving the transaction message by the payee end and the witness end, the method further comprises the following substeps: confirming the receipt Whether the sender receives the transaction message; when the payee receives the transaction message, confirms whether the witness receives the transaction message; when the witness receives the transaction message, records the receipt a transaction code and a witness transaction code; wherein the payee transaction code is the number of the payee end receiving the transaction signal, and the witness transaction code is the number of witnesses receiving the transaction signal; the witness The terminal broadcasts a first authentication message including the transaction message; confirms whether the payee end receives the first authentication message; and when the payee end receives the first authentication message, the payee end Adding the witness to a witness list, recording the payee transaction code and the witness transaction code, and broadcasting the receipt message to the payee; when the payee When the first authentication message is not received, the witness side becomes an external witness, and the payee transaction code and the witness transaction code are recorded, and the receipt message is broadcasted by the payee end; When the witness does not receive the transaction message, the payee transaction code and the witness transaction code are recorded, and the receipt message is externally broadcast by the payee. The offline message delivery method of claim 11, wherein after the step of confirming whether the payee side receives the transaction message, the method further comprises the following substeps: when the payee end does not receive the transaction message Determining whether the witness receives the transaction message; when the witness receives the transaction message, recording the payee transaction code and the witness transaction code; the witness broadcasts the transaction message including the transaction message a first authentication message; confirming whether the payee end receives the first authentication message; when the payee end receives the first authentication message, the payee end joins the witness to a witness In the list, the payee transaction code is recorded and the witness transaction code is recorded, and the receipt message is broadcasted by the payee end; when the payee end does not receive the first authentication message, the witness The person becomes a list of witnesses, and records the payee transaction code and the witness transaction code, and re- broadcasts the transaction message by the payer; when the witness is not connected When the message to the transaction, the payee record trading symbol and witness the trading symbol, and re-foreign broadcasting the message transaction by the end of the payers. The offline message delivery method according to any one of claims 2 to 10, wherein in the step of receiving the receipt message by the payer end and the witness side, the method further comprises the following substeps: confirming the payer Whether the terminal receives the receipt message; when the payer receives the receipt message, confirms whether the witness receives the receipt message; when the witness receives the receipt message, records a payer receipt code And a witness receipt code; wherein the payer receipt code is the number of payer terminals receiving the receipt signal, the witness receipt code is the number of witnesses receiving the receipt signal; the witness side external broadcast includes the a second authentication message of the receipt message; confirming whether the payer receives the second authentication message; when the payer receives the second authentication message, the payer adds the witness to a witness In the list, the receipt code and the witness receipt code are recorded, and the confirmation message is broadcasted by the payer; when the payer is not connected Upon receiving the second authentication message, the witness side becomes a list of external witnesses, and records the payer's receipt code and the witness's receipt code, and the payer end broadcasts the confirmation message; when the witness When the receipt message is not received, the payee receipt code and the witness receipt code are recorded, and the confirmation message is broadcasted by the payer end. The offline message delivery method of claim 13, wherein after the step of confirming whether the payer side receives the receipt message, the method further comprises the following substeps: when the payer end does not receive the receipt message, confirming Whether the witness receives the receipt message; when the witness receives the receipt message, records the payer receipt code and the witness receipt code; the witness broadcasts a second containing the receipt message Authenticating message; confirming whether the payer receives the second authentication message; when the payer receives the second authentication message, the payer adds the witness to a witness list, and records the a payee receipt code and the witness receipt code, and the payer side broadcasts the receipt message externally; when the payer end does not receive the second authentication message, the witness side becomes a list of witnesses, and Recording the payer receipt code and the witness receipt code, and re-sending the receipt message by the payee; when the witness does not receive When receipt message, record the payment receipt by receipt code and the witness, code-named and re-foreign broadcasting the message receipt by the end of the payee. The offline message delivery method according to any one of claims 2 to 10, wherein in the step of receiving the confirmation message by the payee end and the witness end, the method further comprises the following substeps: confirming the receipt Whether the sender receives the confirmation message; when the payee receives the confirmation message, confirms whether the witness receives the confirmation message; when the witness receives the confirmation message, records the receipt The payment confirmation code and a witness confirmation code; wherein the payee confirmation code is the number of the payee end receiving the confirmation signal, and the witness confirmation code is the number of the witnesses receiving the confirmation signal; the witness The terminal broadcasts a third authentication message including the confirmation message; confirms whether the third party authentication message is received by the payee end; and when the payee end receives the third authentication message, the payee end Adding the witness to a witness list, recording the payee confirmation code and the witness confirmation code, and completing the offline transaction; when the payee end does not receive the third recognition When the message is issued, the witness becomes a list of witnesses, and the payee confirmation code and the witness confirmation code are recorded, and the offline transaction is completed; when the witness does not receive the confirmation message, the record is recorded. The payee confirms the code and the witness confirms the code and completes the offline transaction. The offline message delivery method of claim 15, wherein after the step of confirming whether the payee side receives the confirmation message, the method further comprises the following substeps: when the payee end does not receive the confirmation message Confirming whether the witness receives the confirmation message; when the witness receives the confirmation message, recording the payee confirmation code and the witness confirmation code; the witness broadcasts the confirmation message a third authentication message; confirming whether the payee end receives the third authentication message; when the payee end receives the third authentication message, the payee end joins the witness to a witness In the list, the payee confirmation code and the witness confirmation code are recorded, and the offline transaction is completed; when the payee end does not receive the third authentication message, the witness side becomes an external witness. And recording the payee confirmation code and the witness confirmation code, and re-sending the confirmation message by the payer; when the witness does not receive the confirmation message, recording Payee confirmation code and confirm the witness, code-named and re-confirmation of the payment by the foreign broadcasting ends.