CN110880103A

CN110880103A - Method, device and system for issuing electronic invoice

Info

Publication number: CN110880103A
Application number: CN201811030157.3A
Authority: CN
Inventors: 钟源; 周珅珅; 王申
Original assignee: Aisino Corp
Current assignee: Aisino Corp
Priority date: 2018-09-05
Filing date: 2018-09-05
Publication date: 2020-03-13

Abstract

The invention discloses a method, a device and a system for issuing an electronic invoice, which are used for solving the safety problem that the element content of the existing electronic invoice can be arbitrarily input and manually modified. The method comprises the following steps: when the authorization equipment identifies that the authorization equipment is connected with the invoicing equipment, the encrypted target invoice element information stored by the authorization equipment is read, the encrypted target invoice element data is decrypted to obtain the target invoice element information, then the invoice element information contained in the invoice to be invoiced of the invoicing equipment connected with the authorization equipment is obtained, whether the invoice element information is consistent with the target invoice element information or not is judged, if so, the invoicing equipment is informed to invoice, otherwise, invoicing is not performed, because the method can only verify the invoice element information when the invoice element information is the target invoice element information, namely, invoicing can be performed, and therefore, potential safety hazards caused by artificial modification can be avoided.

Description

Method, device and system for issuing electronic invoice

Technical Field

The invention mainly relates to the technical field of electronic invoices, in particular to a method, a device and a system for issuing electronic invoices.

Background

The electronic invoice is generated for adapting to digital informatization and electronic commerce, is uniformly issued to a merchant by a tax bureau for use, is mainly paid out in a digital form through a special bill management system, and is issued safely based on a digital certificate system.

In the prior art, an electronic invoice issuing system issues a corresponding electronic invoice according to input invoice information under an operation authority, and invoice form elements can be input at will, wherein the invoice form element information includes: commodity name, quantity, amount, and the like, and invoice non-form elements can even be manually input, wherein the invoice non-form element information comprises: the collection unit, the invoicing date and the like have potential safety hazards, and unnecessary disputes and losses are caused during the electronic invoice reimbursement and verification.

Therefore, a safer method for issuing electronic invoices is urgently needed to solve the problem that the current invoice elements can be arbitrarily input and manually modified.

Disclosure of Invention

The embodiment of the invention provides a method, a device and a system for issuing an electronic invoice, which are used for solving the safety problem that the elements of the existing electronic invoice can be arbitrarily input and manually modified.

The embodiment of the invention provides a method for issuing an electronic invoice, which is applied to authorization equipment and comprises the following steps:

when the authorization equipment identifies that the authorization equipment is connected with the invoicing equipment, reading encrypted target invoice element information stored by the authorization equipment;

decrypting the encrypted target invoice element information to obtain the target invoice element information;

acquiring invoice element information contained in an invoice to be issued of an invoicing device connected with the invoicing device;

judging whether the invoice element information is consistent with the target invoice element information;

and if the invoice is consistent with the preset invoice, informing the invoice device to invoice.

Further, before reading the encrypted target invoice element information stored in the method, the method further includes:

reading the encrypted identification information of the target billing equipment stored by the device;

decrypting the encrypted identification information of the target billing equipment to obtain the identification information of the target billing equipment;

acquiring identification information of billing equipment connected with the billing equipment;

judging whether the identification information of the billing equipment is consistent with the identification information of the target billing equipment or not;

and if the two are consistent, performing the subsequent steps.

reading the number of invoices allowed by the encrypted invoicing equipment stored by the invoicing equipment;

decrypting the encrypted number of invoices allowed by the invoicing equipment to obtain the number of invoices allowed by the invoicing equipment;

acquiring the number of invoices issued by invoicing equipment connected with the invoicing equipment;

judging whether the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment;

if not, the subsequent steps are carried out.

Further, after the invoicing equipment is determined to issue the invoices, the stored invoice number issued by the invoicing equipment is updated.

Further, if the invoice element information is inconsistent with the target invoice element information, the method further comprises:

outputting first prompt information that the invoice element information is wrong, and not allowing the invoice to be issued;

if the identification information of the billing device is inconsistent with the identification information of the target billing device, the method further comprises:

outputting a second prompt message of error of the invoicing equipment, and not allowing the invoicing equipment to invoice;

if the number of invoices made by the invoicing device reaches the number of invoices allowed by the invoicing device, the method further comprises the following steps:

and outputting third prompt information that the invoicing quantity reaches the maximum value, and not allowing the invoicing equipment to invoice.

Further, the decrypting the encrypted target invoice element information includes:

and verifying and signing the encrypted target invoice essential data by adopting a stored digital certificate, and decrypting the target invoice essential data subjected to signature verification by adopting a stored private key.

The embodiment of the invention provides a method for issuing electronic invoices, which is applied to invoicing equipment and comprises the following steps:

the invoicing equipment generates invoice element information of an invoice to be invoiced according to the received information input by the user;

sending the invoice element information of the invoice to an authorization device connected with the invoice, so that the authorization device judges whether the invoice element information is consistent with target invoice element information stored by the authorization device;

and issuing the invoice according to the information for notifying the invoice sent by the authorization equipment, wherein the information for notifying the invoice is sent when the authorization equipment judges that the invoice element information is consistent with target invoice element information stored by the authorization equipment.

Further, the method further comprises: receiving first prompt information of invoice element information error sent by the authorization equipment, wherein the first prompt information is sent when the authorization equipment determines that the invoice element information is inconsistent with the target invoice element information; the invoicing is not allowed according to the notification sent by the authorization device.

Further, the method further comprises: receiving second prompt information of error of the billing device, which is sent by the authorization device, wherein the second prompt information is sent when the authorization device determines that the identification information of the billing device is inconsistent with the identification information of the target billing device; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

Further, the method further comprises: receiving third prompt information that the number of invoices sent by the authorization equipment reaches the maximum value, wherein the third prompt information is sent when the authorization equipment determines that the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

The embodiment of the invention provides a device for issuing electronic invoices, which is applied to authorization equipment and comprises:

the reading module is used for reading the encrypted target invoice element information stored by the reading module after the reading module identifies that the reading module is connected with the invoicing equipment;

the decryption module is used for decrypting the encrypted target invoice element information to obtain the target invoice element information;

the acquiring module is used for acquiring invoice element information contained in an invoice to be issued of the invoicing equipment connected with the acquiring module;

the judging module is used for judging whether the invoice element information is consistent with the target invoice element information;

and the notification module is used for notifying the invoice equipment to issue the invoice when the judgment result of the judgment module is yes.

Further, the apparatus further comprises: the billing equipment verification module is used for reading the encrypted identification information of the target billing equipment stored by the billing equipment verification module; decrypting the encrypted identification information of the target billing equipment to obtain the identification information of the target billing equipment; acquiring identification information of billing equipment connected with the billing equipment; judging whether the identification information of the billing equipment is consistent with the identification information of the target billing equipment or not; and if the two are consistent, triggering the reading module.

Further, the apparatus further comprises: the billing quantity verification module is used for reading the number of invoices allowed by the encrypted billing equipment stored by the billing equipment; decrypting the encrypted number of invoices allowed by the invoicing equipment to obtain the number of invoices allowed by the invoicing equipment; acquiring the number of invoices issued by invoicing equipment connected with the invoicing equipment; judging whether the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment; and if not, triggering the reading module.

Further, the apparatus further comprises: and the updating module is used for updating the number of the invoices which are already issued by the invoicing equipment after the invoicing equipment is determined to issue the invoices.

Further, the apparatus further comprises: the prompting module is used for outputting first prompting information with wrong invoice element information and not allowing the invoice to be issued if the invoice element information is inconsistent with the target invoice element information; if the identification information of the billing equipment is inconsistent with the identification information of the target billing equipment, outputting second wrong prompt information of the billing equipment, and not allowing the billing equipment to invoice; and if the number of invoices made by the invoicing equipment reaches the number of invoices allowed to be made by the invoicing equipment, outputting third prompt information that the number of the invoices reaches the maximum value, and not allowing the invoicing equipment to make the invoices.

Further, the decryption module is specifically configured to verify the signature of the encrypted target invoice element information by using a stored digital certificate, and decrypt the signed target invoice element data by using a stored private key.

The embodiment of the invention provides a device for issuing electronic invoices, which is applied to invoicing equipment and comprises the following components:

the generating module is used for generating invoice element information of the invoice to be issued according to the received information input by the user;

the sending module is used for sending the invoice element information of the invoice to an authorization device connected with the sending module, so that the authorization device judges whether the invoice element information is consistent with target invoice element information stored by the authorization device;

and the receiving and invoicing module is used for issuing the invoice according to the information for notifying the invoice sent by the authorization equipment, and issuing the invoice, wherein the information for notifying the invoice is sent when the authorization equipment judges that the invoice element information is consistent with the target invoice element information stored by the authorization equipment.

Further, the invoice receiving module is further configured to receive first prompt information that the invoice element information sent by the authorization device is incorrect, where the first prompt information is sent when the authorization device determines that the invoice element information is inconsistent with the target invoice element information; the invoicing is not allowed according to the notification sent by the authorization device.

Further, the invoicing receiving module is further configured to receive second prompt information of an error of the invoicing device, which is sent by the authorization device, where the second prompt information is sent when the authorization device determines that the identification information of the invoicing device is inconsistent with the identification information of the target invoicing device; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

Further, the invoice receiving module is further configured to receive third prompt information that the number of invoices sent by the authorization device reaches a maximum value, where the third prompt information is sent when the authorization device determines that the number of invoices issued by the invoicing device reaches the number of invoices allowed by the invoicing device; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

The invention provides a system for issuing electronic invoices, which comprises the device for issuing the electronic invoices applied to authorization equipment and the device for issuing the electronic invoices applied to invoicing equipment.

The embodiment of the invention provides a method, a device and a system for issuing an electronic invoice, wherein the method comprises the following steps: when the authorization equipment identifies that the authorization equipment is connected with the invoicing equipment, reading encrypted target invoice element information stored by the authorization equipment, decrypting the encrypted target invoice element information to obtain the target invoice element information, then acquiring invoice element information contained in an invoice to be invoiced of the invoicing equipment connected with the authorization equipment, judging whether the invoice element information is consistent with the target invoice element information, if so, informing the invoicing equipment to invoice, and if not, not allowing the invoicing equipment to invoice. Because the invoice element information contained in the invoice to be issued is acquired in the embodiment of the invention, the invoice can be issued only when the invoice element information is consistent with the target invoice element information stored by the authorization equipment, so that potential safety hazards caused by manual modification or any input can be avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic diagram of a process for issuing an electronic invoice according to embodiment 1 of the present invention;

fig. 2 is a schematic diagram of a process for issuing an electronic invoice according to embodiment 6 of the present invention;

FIG. 3 is a schematic diagram of a system-on-chip architecture of an authorization device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an apparatus for issuing an electronic invoice according to embodiment 8 of the present invention;

fig. 5 is a schematic structural diagram of an apparatus for issuing an electronic invoice according to embodiment 9 of the present invention;

fig. 6 is a schematic structural diagram of a system for issuing an electronic invoice according to an embodiment of the present invention.

Detailed Description

In order to avoid the safety problem that the element information of the electronic invoice can be arbitrarily input and manually modified, the embodiment of the invention provides a method, a device and a system for issuing the electronic invoice.

The present invention will be described in further detail with reference to the attached drawings, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

fig. 1 is a schematic diagram of a process for issuing an electronic invoice, which includes the following steps:

s101: and when the authorization equipment identifies that the authorization equipment is connected with the invoicing equipment, reading the encrypted target invoice element information stored by the authorization equipment.

The method for issuing the electronic invoice provided by the embodiment of the invention is applied to authorization equipment.

When a user has a billing requirement, the authorization device is accessed into the billing device, that is, the authorization device is connected with the billing device, the specific authorization device may be a device with a usb interface, when a bill needs to be issued, the usb interface of the authorization device is connected with the usb interface of the billing device, and the specific process of identifying the connection between the devices through the usb interface is the prior art, which is not repeated in the embodiment of the present invention.

The authorization device stores target invoice element information, and in order to improve the security in the electronic invoice issuing process, the target invoice element information is encrypted, namely the encrypted target invoice element information is stored in the authorization device.

The target invoice element information may include one or more of the elements of a collection unit, an invoicing date, an invoicing amount, and the like, if the target invoice element information includes a collection unit, a name of the collection unit may be specifically stored, and if the target invoice element information includes an invoicing date or an invoicing amount, a corresponding value range of the invoicing date or a corresponding value range of the invoicing amount, and the like may be specifically included, but of course, the target invoice element information may also include other information, which is related to an actual demand, and is not limited herein.

When the authorization device identifies that the authorization device is connected with the invoicing device, the authorization device can read the encrypted target invoice element information stored in the authorization device.

S102: and decrypting the encrypted target invoice essential element information to obtain the target invoice essential element information.

After the authorization equipment reads the encrypted target invoice element information, the authorization equipment stores a decryption algorithm for decrypting the encrypted target invoice element information, and if a key is adopted during encryption, the authorization equipment also stores a key for decrypting the encrypted target invoice element information, so that the encrypted target invoice element information can be directly decrypted.

The process of decrypting the encrypted target invoice element information by the authorization device may be to decrypt by using a decryption algorithm corresponding to the encryption algorithm when the target invoice element information is encrypted, and the encryption algorithm and the decryption algorithm may be a symmetric encryption and decryption algorithm, may be an asymmetric encryption and decryption algorithm, may be a hash algorithm, and the like, which is not limited in the embodiment of the present invention.

For example, when the encryption algorithm and the decryption algorithm are asymmetric encryption and decryption algorithms, the encryption algorithm is used for encryption by using a public key, and the decryption algorithm is used for decryption by using a private key. Due to the fact that the public key and the private key are asymmetric, the asymmetric encryption and decryption algorithm is adopted, the difficulty in tampering the encrypted target invoice element information is improved, manual modification of the invoice element information is further avoided, and therefore safety of electronic invoice issuing is further improved.

And the authorization equipment decrypts the encrypted target invoice essential element information to obtain the target invoice essential element information.

S103: acquiring invoice element information contained in an invoice to be issued of an invoicing device connected with the invoicing device, and judging whether the invoice element information is consistent with the target invoice element information.

The authorization device obtains invoice element information of an invoice to be issued sent by an invoicing device connected with the authorization device, wherein the invoice element information of the invoice to be issued can comprise one or more of elements such as a collection unit, an invoicing date and an invoicing amount, the name of the collection unit can be specifically stored if the target invoice element information comprises the collection unit, and the corresponding range of the invoicing date or the corresponding value range of the invoicing amount can be specifically included if the target invoice element information comprises the invoicing date or the invoicing amount.

Since the authorization device obtains the target invoice element information and the invoice element information of the invoice to be issued, in order to identify whether the invoice element information of the invoice to be issued is manually modified or arbitrarily input, whether the name of a collection unit included in the invoice element information of the invoice to be issued is consistent with a collection unit included in the target invoice element information, whether the invoice date is in the corresponding range of the invoice date, whether the invoice amount is in the corresponding value range of the invoice amount, and the like can be judged.

Specifically, if the invoice element information of the invoice to be invoiced includes a collection unit, whether the collection unit in the invoice to be invoiced is consistent with the collection unit in the target invoice element can be judged, if the invoice element information of the invoice to be invoiced includes an invoicing amount, whether the invoicing amount is within the invoicing amount range of the target invoice element can be judged, if the invoice element information of the invoice to be invoiced includes an invoicing date, whether the current invoicing date is within the invoicing date range of the target invoice element information, and the like.

S104: and if the invoice information is consistent with the invoice information, informing the invoicing equipment to invoice.

And when the judgment result is consistent, namely the corresponding invoice element information of each invoice to be invoiced is judged to be correspondingly consistent according to the target invoice element information, the invoice element information of the invoice to be invoiced is considered not to be manually modified or arbitrarily input, and the authorization equipment can send the information for invoicing to the invoiced equipment and inform the invoiced equipment of invoicing.

S105: if not, the invoicing equipment is not allowed to invoice.

And when the judgment result is inconsistent, the invoice element information of the invoice to be invoiced is considered to be possibly manually modified or arbitrarily input, and the authorization equipment does not allow the invoicing equipment to invoice the invoice. The invoicing equipment is not allowed to invoice, the authorization equipment can output prompt information that the invoice element information is wrong, and operations such as ending an invoicing program running in the invoicing equipment can also be performed.

Because the invoice element information contained in the invoice to be issued is acquired in the embodiment of the invention, the invoice can be issued only when the invoice element information is consistent with the target invoice element information stored by the authorization equipment, so that potential safety hazards caused by manual modification or any input can be avoided.

Example 2:

in order to confirm whether the invoicing device is authorized to invoice, on the basis of the above embodiment, in the embodiment of the present invention, after the encrypted identification information of the target invoicing device stored in the invoicing device is read, the method further includes:

and if the two are consistent, performing the subsequent steps.

After the authorization device is connected with the billing device, the authorization device can identify the connection between the authorization device and the billing device and identify the identification information of the billing device connected with the authorization device.

The authorization device stores the identification information of the target billing device, and in order to prevent the identification information of the target billing device from being changed, the identification information of the target billing device is encrypted, namely the encrypted identification information of the target billing device stored in the authorization device.

After the authorization device reads the encrypted identification information of the target billing device, the authorization device stores a decryption algorithm for decrypting the encrypted identification information of the target billing device, and if a secret key is used during encryption, the authorization device also stores a secret key for decrypting the encrypted identification information of the target billing device, so that the encrypted identification information of the target billing device can be directly decrypted.

And the authorization equipment decrypts the encrypted identification information of the target billing equipment to obtain the identification information of the target billing equipment.

The authorization device obtains self billing device identification information sent by the billing device connected with the authorization device.

Since the authorization device acquires the identification information of the target billing device and the identification information of the billing device connected with the authorization device, in order to determine whether the billing device connected with the authorization device is authorized to bill, the consistency judgment can be carried out on the acquired identification information of the billing device and the identification information of the target billing device.

And when the judgment result is consistent, the invoicing equipment is considered to be authorized to invoice, and the authorization equipment can inform the invoicing equipment to allow the invoicing equipment to invoice and carry out the subsequent steps.

And when the judgment result is inconsistent, the invoicing equipment is not authorized to invoice, and the invoicing equipment is not allowed to invoice.

The authorization device in the embodiment of the invention can compare the identification information of the invoicing device connected with the authorization device with the identification information of the decrypted target invoicing device stored by the authorization device, determine whether the invoicing device is authorized, if so, the authorization device considers that the invoicing device is authorized to invoice, and inform the authorization device of allowing the invoicing device to invoice, thereby improving the security of invoicing.

Example 3:

in order to determine whether the billing amount of the billing device exceeds the allowable billing amount of the billing device, and further ensure the accuracy of billing, on the basis of the above embodiments, in an embodiment of the present invention, before reading the encrypted target invoice element information stored in the method, the method further includes:

if not, the subsequent steps are carried out.

The authorization device stores the number of the invoices allowed by the invoicing device, and in order to prevent the change of the number of the invoices allowed, the encryption processing is carried out on the number of the invoices allowed by the invoicing device, namely, the number stored in the authorization device is the encrypted number of the invoices allowed by the invoicing device.

When the authorization device recognizes that the authorization device is connected with the billing device, the authorization device can read the number of invoices allowed by the encrypted billing device stored in the authorization device.

After the authorization device reads the number of the encrypted invoices allowed by the invoicing device, the authorization device stores a decryption algorithm for decrypting the number of the encrypted invoices allowed by the invoicing device, and if the encryption algorithm adopts a key, the authorization device also stores a key for decrypting the number of the encrypted invoices allowed by the invoicing device, so that the number of the encrypted invoices allowed by the invoicing device can be directly decrypted.

And the authorization device decrypts the encrypted number of the invoices allowed by the invoicing device to obtain the number of the invoices allowed by the invoicing device.

The authorization device locally stores the number of invoices made by the current invoicing device, so that after the authorization device obtains the number of invoices made by the invoicing device and the stored number of invoices made by the invoicing device, in order to determine whether the invoicing device can also make invoices, the number of invoicing allowed by the invoicing device and the number of invoices made by the invoicing device can be compared in numerical value.

When the authorization device judges that the number of invoices issued by the invoicing device does not reach the number of invoices allowed by the invoicing device, the authorization device can inform the invoicing device of allowing the invoicing device to issue the invoices, and the subsequent steps are carried out.

When the authorization device judges that the number of invoices made by the invoicing device reaches the number of invoices allowed by the invoicing device, the authorization device does not allow the invoicing device to make invoices.

The specific execution order of embodiment 2 and embodiment 3 is not limited, and the determination may be made before the invoice is issued.

The authorization equipment in the embodiment of the invention judges whether the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment, if not, the invoicing equipment is allowed to issue the invoices, thereby solving the problem that the invoicing number of the current invoicing equipment is not limited, and further improving the security of invoicing.

Example 4:

in order to let the user know the reason why the invoice cannot be issued, on the basis of the above embodiments, in an embodiment of the present invention, if the invoice element information does not coincide with the target invoice element information, the method further includes: outputting first prompt information that the invoice element information is wrong, and not allowing the invoice to be issued;

if the identification information of the billing device is inconsistent with the identification information of the target billing device, the method further comprises: outputting a second prompt message of error of the invoicing equipment, and not allowing the invoicing equipment to invoice;

if the number of invoices made by the invoicing device reaches the number of invoices allowed by the invoicing device, the method further comprises the following steps: and outputting third prompt information that the invoicing quantity reaches the maximum value, and not allowing the invoicing equipment to invoice.

In the step, if the authorization equipment judges that the invoice element information to be issued is inconsistent with the decrypted target invoice element information stored by the authorization equipment, the authorization equipment outputs first prompt information of error invoice element information and does not allow the invoice equipment connected with the authorization equipment to issue the invoice;

if the authorization equipment judges that the identification information of the invoicing equipment to be invoiced is inconsistent with the identification information of the target invoicing equipment which is stored in the authorization equipment and is obtained after decryption, the authorization equipment outputs the second wrong prompt information of the invoicing equipment and does not allow the invoicing equipment connected with the authorization equipment to invoice;

and if the authorization equipment judges that the number of invoices issued by the invoicing equipment reaches the number of invoices allowed to be issued by the invoicing equipment which is stored by the authorization equipment and obtained after decryption, the authorization equipment outputs third prompt information that the number of invoices reaches the maximum value, and does not allow the invoicing equipment connected with the authorization equipment to issue the invoices.

In the embodiment of the invention, when the authorization equipment judges that the element information of the invoice to be issued is inconsistent with the element information of the target invoice obtained after decryption and stored by the authorization equipment, the identification information of the invoicing equipment for issuing the invoice is inconsistent with the identification information of the target invoicing equipment obtained after decryption and stored by the authorization equipment, or the number of invoices issued by the invoicing equipment reaches the number of invoicing allowed by the invoicing equipment obtained after decryption and stored by the authorization equipment, the authorization equipment respectively sends corresponding error prompt information and does not allow the invoicing, and the method outputs corresponding prompt information when the judgment result is inconsistent so as to enable a user to know the reason of the invoicing failure and timely change and adjust the invoice.

Example 5:

in order to obtain the decrypted invoice element information, in addition to the above embodiments, in an embodiment of the present invention, the decrypting the encrypted target invoice element information includes:

The authorization device stores target invoice element information, and in order to improve the security in the electronic invoice issuing process, the target invoice element information is encrypted, namely the encrypted target invoice element information is stored in the authorization device. And after reading the encrypted target invoice element information, the authorization equipment decrypts the target invoice element information by adopting a decryption algorithm stored by the authorization equipment.

The authorization device stores a cryptographic module, and the cryptographic module stores various algorithms of cryptographic operation, which may include a key management algorithm, a symmetric encryption and decryption algorithm, an asymmetric encryption and decryption algorithm, a hash algorithm, and the like.

After the authorization device generates the private key of the authorization device and makes a corresponding digital certificate through various algorithms stored by the password module, the authorization mechanism signs the element information of the target invoice by using the digital certificate of the authorization mechanism and encrypts the element information of the target invoice by using the made digital certificate through an encryption algorithm.

When the authorization device decrypts the encrypted target invoice essential information, firstly, the authorization device verifies and signs the encrypted target invoice essential information through the digital certificate of the authorization mechanism stored in the authorization device, and the process of verifying and signing by using the digital certificate of the authorization mechanism can adopt the same encryption algorithm as that used when signing by using the digital certificate of the authorization mechanism. A symmetric encryption/decryption algorithm may be used, using the same secret key when signing and verifying a signature with a digital certificate, for example using the public key of an authority.

The process of decrypting the target invoice element information after the signature verification by the authorization device can be to decrypt by adopting a decryption algorithm corresponding to the encryption algorithm when the target invoice element information is encrypted.

Similarly, the authorization device processes the identification information of the target billing device and the number of invoices allowed by the billing device in the same manner.

In the embodiment of the invention, various authorization information is encrypted, so that the security of the authorization information is ensured, the difficulty of tampering the authorization information is increased, and the security problems that the invoice element information is artificially modified and the invoice amount is not limited in the invoicing process are solved.

Example 6:

fig. 2 is a schematic diagram of a process for issuing an electronic invoice according to an embodiment of the present invention, where the process includes the following steps:

s201: and the invoicing equipment generates invoice element information of the invoice to be invoiced according to the received information input by the user.

The method for issuing the electronic invoice provided by the embodiment of the invention is applied to invoicing equipment.

When the user has a billing demand, the user inputs information to the billing equipment, and the billing equipment automatically generates invoice element information of the invoice to be invoiced after receiving the information input by the user, wherein the invoice element information can be at least one of a collection unit, a billing date, a billing amount and the like.

S202: and sending the invoice element information of the invoice to an authorization device connected with the invoice, so that the authorization device judges whether the invoice element information is consistent with the encrypted target invoice element information stored by the authorization device.

The invoicing device sends invoice element information of the invoice to be invoiced to an authorization device connected with the invoiced, the authorization device compares the consistency of the received invoice element information of the invoice to be invoiced with target invoice element information which is stored by the authorization device and obtained after decryption, specifically, if the invoice element information of the invoice to be invoiced contains a collection unit, whether the collection unit in the invoice to be invoiced is consistent with a collection unit in the target invoice element can be judged, if the invoice element information of the invoice to be invoiced contains an invoicing amount, whether the invoicing amount is within the invoicing amount range of the target invoice element can be judged, if the invoice element information of the invoice to be invoiced contains an invoicing date, whether the current invoicing date is within the invoicing date range of the target invoice element information, and the like.

S203: and issuing the invoice according to the information for notifying the invoice sent by the authorization equipment, wherein the information for notifying the invoice is sent when the authorization equipment judges that the invoice element information is consistent with target invoice element information stored by the authorization equipment.

And if the authorization equipment judges that the invoice element information of the invoice to be issued is consistent with the decrypted target invoice element information stored by the authorization equipment, sending information informing the invoice to be issued to the invoice issuing equipment.

And the invoicing equipment receives the information which is sent by the authorization equipment and informs invoicing, and the invoicing is carried out. The process of issuing an invoice by an invoicing device belongs to the prior art, and is not described in detail in the embodiment of the invention.

The invoicing equipment in the embodiment of the invention can issue the invoice only after receiving the information informing the invoicing sent by the authorization equipment, and the method ensures that the invoicing equipment can not issue the invoice at will, thereby further improving the security of invoicing.

Example 7:

in order to prompt the user of the reason why the invoice cannot be issued, on the basis of the above embodiments, in an embodiment of the present invention, the method further includes:

receiving first prompt information of invoice element information error sent by the authorization equipment, wherein the first prompt information is sent when the authorization equipment determines that the invoice element information is inconsistent with the target invoice element information; the invoicing is not allowed according to the notification sent by the authorization device.

Receiving second prompt information of error of the billing device, which is sent by the authorization device, wherein the second prompt information is sent when the authorization device determines that the identification information of the billing device is inconsistent with the identification information of the target billing device; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

Receiving third prompt information that the number of invoices sent by the authorization equipment reaches the maximum value, wherein the third prompt information is sent when the authorization equipment determines that the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

In this step, if the authorization device judges that the invoice element information of the invoice to be issued is inconsistent with the decrypted target invoice element information stored by the authorization device, first prompt information of error invoice element information is sent to the invoice issuing device.

And if the invoicing equipment receives first prompt information that the invoice element information sent by the authorization equipment is wrong, the invoicing equipment is not allowed to invoice according to the first prompt information.

And if the authorization equipment judges that the identification information of the billing equipment is inconsistent with the identification information of the target billing equipment which is stored in the authorization equipment and obtained after decryption, sending second prompt information of error of the billing equipment to the billing equipment.

And if the invoicing equipment receives second prompt information which is sent by the right equipment and is wrong with the invoicing equipment, the invoicing equipment is not allowed to invoice according to the second prompt information.

And if the authorization equipment judges that the number of invoices issued by the invoicing equipment reaches the number of invoices allowed to be issued by the invoicing equipment, which is stored by the authorization equipment and obtained after decryption, the third prompt information that the number of invoices reaches the maximum value is sent to the invoicing equipment.

And if the invoicing equipment receives third prompt information that the invoicing quantity sent by the authorization equipment reaches the maximum value, the invoicing equipment is not allowed to invoice according to the third prompt information.

In the embodiment of the invention, when the authorization equipment judges that the element information of the invoice to be issued is inconsistent with the element information of the target invoice obtained after decryption and stored by the authorization equipment, the identification information of the invoicing equipment for issuing the invoice is inconsistent with the identification information of the target invoicing equipment obtained after decryption and stored by the authorization equipment, or the number of invoices issued by the invoicing equipment reaches the number of invoicing allowed by the invoicing equipment obtained after decryption and stored by the invoicing equipment, the invoicing equipment receives first prompt information of wrong invoice element information, second prompt information of wrong invoicing equipment or third prompt information of which the maximum invoicing number is reached, and the invoicing is not allowed, when the judgment result of the authorization equipment is inconsistent, the invoicing equipment receives corresponding prompt information to prompt a user to the reason that the invoicing cannot be performed, thus, timely changing and adjusting.

The above embodiments are described below as a specific embodiment, which includes the following steps:

step 1: an authorization authority issues authorization equipment, a private key is generated through a password module of the authorization equipment, and a corresponding digital certificate is manufactured.

The authorization device is based on a system on chip, which holds a cryptographic module and a data management module and a business module, as shown in fig. 3.

When the user needs to invoice, the authorization mechanism needs to be accessed to obtain the authorization equipment. When an authorization mechanism issues authorization equipment, a private key of the authorization equipment is generated through various operation algorithms of a password module of the authorization equipment, and a digital certificate of the authorization equipment is correspondingly manufactured. The authorized device may be processed, for example, using a hash algorithm, with a private key of the authorized device to generate a digital certificate corresponding to the private key.

Step 2: the authorization mechanism obtains the authorization information, and the authorization mechanism signs the authorization information respectively by using a private key of the authorization mechanism and encrypts the authorization information by using a digital certificate of the authorization device to generate authorization data.

The authorization mechanism obtains corresponding authorization information through the information that the user describes the invoices to be issued, wherein the authorization information at least comprises one of target invoicing equipment identification information, the allowable invoicing quantity of the invoicing equipment and target invoicing element information, and preferably, the authorization information can be completely included.

After obtaining the authorization information, the authorization mechanism encrypts the authorization information, may use a private key of the authorization mechanism to sign, and encrypts the signed authorization information using a digital certificate of the authorization device to generate authorization data. For safety, an asymmetric encryption algorithm can be adopted in the encryption process, and the tampering difficulty of the authorization information is increased.

And step 3: the authorization organization writes the digital certificate and the authorization data of the authorization organization into the authorization equipment through a data management module of the authorization equipment.

The authorization device is stored with a data management module, which can store various digital certificates and authorization information.

After the authorization information is encrypted by the authorization mechanism, the obtained encrypted authorization information and various digital certificates are stored in the data management module, wherein the digital certificates comprise an authorization mechanism digital certificate, an authorization device digital certificate and the like. In order to avoid tampering of the authorization information, the data of the data management module is stored in the read-only memory area, and the read-only memory area is not modifiable.

And 4, step 4: when the authorization equipment identifies that the authorization equipment is connected with the billing equipment, reading the encrypted identification information of the target billing equipment stored by the authorization equipment; decrypting the encrypted identification information of the target billing equipment to obtain the identification information of the target billing equipment; acquiring identification information of billing equipment connected with the billing equipment; judging whether the identification information of the billing equipment is consistent with the identification information of the target billing equipment or not; and if the two are consistent, performing the subsequent steps.

The process of verifying the identifier information of the billing device is described in detail in embodiment 2, and the embodiment of the present invention is not described again.

And 5: reading the number of invoices allowed by the encrypted invoicing equipment stored by the invoicing equipment; decrypting the encrypted number of invoices allowed by the invoicing equipment to obtain the number of invoices allowed by the invoicing equipment; acquiring the number of invoices issued by invoicing equipment connected with the invoicing equipment; judging whether the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment; if not, the subsequent steps are carried out.

The process of verifying the billing amount of the billing device is described in detail in embodiment 3, and is not described in detail in the embodiment of the present invention.

Step 6: reading encrypted target invoice element information stored by the self; decrypting the encrypted target invoice element information to obtain the target invoice element information; acquiring invoice element information contained in an invoice to be issued of an invoicing device connected with the invoicing device; judging whether the invoice element information is consistent with the target invoice element information; and if the invoice is consistent with the preset invoice, informing the invoice device to invoice.

The invoice element information verification process is described in detail in embodiment 1, and is not described in detail in the embodiment of the present invention.

And 7: if the invoice element information is inconsistent with the target invoice element information, outputting first prompt information of an invoice element information error; if the identification information of the billing equipment is inconsistent with the identification information of the target billing equipment, outputting second wrong prompt information of the billing equipment; if the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment, outputting third prompt information that the number of the invoices reaches the maximum value; and none of them are allowed to invoice.

If the invoice element information of the invoice to be issued is inconsistent with the target invoice element information, the identification information of the invoicing equipment to be issued is inconsistent with the identification information of the target invoicing equipment, or the number of invoices issued by the invoicing equipment to be issued reaches the number of invoices allowed to be issued by the invoicing equipment, the authorization equipment sends corresponding error prompt information to the invoicing equipment, and the invoices are not allowed to be issued. The process is described in detail in embodiment 4, and is not described in detail in the embodiment of the present invention.

Steps 4-7 are all performed under a service module included in the system on chip of the authorization device.

According to the embodiment of the invention, the authorization equipment informs the invoicing equipment to invoice if the consistency is ensured and the number of invoices made by the invoicing equipment to be invoiced does not reach the number of invoices made by the invoicing equipment, otherwise, the invoicing equipment is not allowed to make invoices, so that the potential safety hazard caused by manual modification or any input can be avoided.

Example 8:

based on the same technical concept, the embodiment of the invention provides a device for issuing an electronic invoice, which is applied to authorization equipment. As shown in fig. 4, the apparatus provided in the embodiment of the present invention mainly includes:

the reading module 401 is used for reading the encrypted target invoice element information stored by the self after the self is identified to be connected with the invoicing equipment;

a decryption module 402, configured to decrypt the encrypted target invoice element information to obtain the target invoice element information;

an obtaining module 403, configured to obtain invoice factor information included in an invoice to be issued of an invoicing apparatus connected to the obtaining module;

a judging module 404, configured to judge whether the invoice element information is consistent with the target invoice element information;

a notification module 405, configured to notify the invoice device to issue the invoice when the determination result of the determination module is yes.

Further, the apparatus further comprises: the invoicing equipment verification module 406 is used for reading the encrypted identification information of the target invoicing equipment stored by the invoicing equipment verification module; decrypting the encrypted identification information of the target billing equipment to obtain the identification information of the target billing equipment; acquiring identification information of billing equipment connected with the billing equipment; judging whether the identification information of the billing equipment is consistent with the identification information of the target billing equipment or not; and if the two are consistent, triggering the reading module.

Further, the apparatus further comprises: the billing quantity verification module 407 is configured to read the number of invoices allowed by the encrypted billing device stored in the billing device; decrypting the encrypted number of invoices allowed by the invoicing equipment to obtain the number of invoices allowed by the invoicing equipment; acquiring the number of invoices issued by invoicing equipment connected with the invoicing equipment; judging whether the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment; and if not, triggering the reading module.

Further, the apparatus further comprises: the updating module 408 is configured to update the number of the invoices made by the invoicing device after determining that the invoicing device makes the invoices.

Further, the apparatus further comprises: a prompt module 409, configured to output first prompt information that the invoice element information is incorrect and disallow the invoice to be issued if the invoice element information is inconsistent with the target invoice element information; if the identification information of the billing equipment is inconsistent with the identification information of the target billing equipment, outputting second wrong prompt information of the billing equipment, and not allowing the billing equipment to invoice; and if the number of invoices made by the invoicing equipment reaches the number of invoices allowed to be made by the invoicing equipment, outputting third prompt information that the number of the invoices reaches the maximum value, and not allowing the invoicing equipment to make the invoices.

Further, the decryption module 402 is specifically configured to verify the signature of the encrypted target invoice element information by using a stored digital certificate, and decrypt the target invoice element data after verifying the signature by using a stored private key.

Example 9:

based on the same technical concept, the embodiment of the invention also provides a device for issuing the electronic invoice, which is applied to the invoicing equipment. As shown in fig. 5, the apparatus provided in the embodiment of the present invention mainly includes:

a generating module 501, configured to generate invoice element information of an invoice to be issued according to received information input by a user;

a sending module 502, configured to send the invoice element information of the invoice to an authorization device connected to the sending module, so that the authorization device determines whether the invoice element information is consistent with target invoice element information stored by the authorization device;

the invoice receiving and issuing module 503 is configured to issue an invoice according to the invoice information issued by the authorization device, where the invoice information issued by the authorization device is sent when the authorization device determines that the invoice element information is consistent with the target invoice element information stored in the authorization device.

Further, the invoice receiving module 503 is further configured to receive first prompt information that the invoice element information sent by the authorization device is incorrect, where the first prompt information is sent when the authorization device determines that the invoice element information is inconsistent with the target invoice element information; the invoicing is not allowed according to the notification sent by the authorization device.

Further, the invoicing receiving module 503 is further configured to receive second prompt information of an error of the invoicing device, where the second prompt information is sent by the authorization device when the authorization device determines that the identification information of the invoicing device is inconsistent with the identification information of the target invoicing device; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

Further, the invoicing receiving module 503 is further configured to receive third prompt information that the number of invoices sent by the authorization device reaches a maximum value, where the third prompt information is sent when the authorization device determines that the number of invoices issued by the invoicing device reaches the number of invoices allowed to be invoiced by the invoicing device; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

Example 10:

fig. 6 is a schematic structural diagram of a system for issuing an electronic invoice, provided by an embodiment of the present invention, where the system for issuing an electronic invoice includes an authorization apparatus 601 and an invoicing apparatus 602; wherein:

the authorization device 601 is configured to read encrypted target invoice factor information stored in the authorization device 601 when the authorization device recognizes that the authorization device is connected with the invoicing device 602; decrypting the encrypted target invoice element information to obtain the target invoice element information; acquiring invoice element information contained in an invoice to be issued of an invoicing device connected with the invoicing device; judging whether the invoice element information is consistent with the target invoice element information; if so, the invoice facility 602 is notified to invoice.

The invoicing equipment 602 is configured to generate invoice element information of an invoice to be invoiced according to the received information input by the user; sending the invoice element information of the invoice to an authorization device 601 connected with the authorization device, so that the authorization device 601 judges whether the invoice element information is consistent with target invoice element information stored by the authorization device 601; issuing the invoice according to the information for notifying the invoice sent by the authorization device 601, wherein the information for notifying the invoice is sent when the authorization device 601 judges that the invoice element information is consistent with the target invoice element information stored by the authorization device 601.

In order to solve the safety problem that the element content of the existing electronic invoice can be randomly input and manually modified, the embodiment of the invention provides a system for issuing an electronic invoice.

The authorization device is used for reading the identification information of the encrypted target invoicing device stored by the authorization device before reading the encrypted target invoicing element information stored by the authorization device; decrypting the encrypted identification information of the target billing equipment to obtain the identification information of the target billing equipment; acquiring identification information of billing equipment connected with the billing equipment; judging whether the identification information of the billing equipment is consistent with the identification information of the target billing equipment or not; and if the two are consistent, performing the subsequent steps.

The authorization device is also used for reading the number of invoices allowed by the encrypted invoicing device after reading the identification information of the encrypted target invoicing device stored by the authorization device; decrypting the encrypted number of invoices allowed by the invoicing equipment to obtain the number of invoices allowed by the invoicing equipment; acquiring the number of invoices issued by invoicing equipment connected with the invoicing equipment; judging whether the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment; if not, the subsequent steps are carried out.

And the authorization device is also used for updating the number of the invoices which are stored and made by the invoicing device after the invoicing device is determined to make the invoices.

The authorization equipment is further used for outputting first prompt information of wrong invoice element information and not allowing the invoice to be issued if the invoice element information is inconsistent with the target invoice element information; if the identification information of the billing equipment is inconsistent with the identification information of the target billing equipment, outputting second wrong prompt information of the billing equipment, and not allowing the billing equipment to invoice; and if the number of invoices made by the invoicing equipment reaches the number of invoices allowed to be made by the invoicing equipment, outputting third prompt information that the number of the invoices reaches the maximum value, and not allowing the invoicing equipment to make the invoices.

The authorization device is specifically configured to decrypt the encrypted target invoice element data, verify the signature of the encrypted target invoice element data by using a stored digital certificate, and decrypt the signed target invoice element data by using a stored private key.

The invoicing equipment is also used for receiving first prompt information of error invoice element information sent by the authorization equipment, wherein the first prompt information is sent when the authorization equipment determines that the invoice element information is inconsistent with the target invoice element information; the invoicing is not allowed according to the notification sent by the authorization device.

The billing device is further configured to receive second prompt information of a billing device error, which is sent by the authorization device, where the second prompt information is sent when the authorization device determines that the identification information of the billing device is inconsistent with the identification information of the target billing device; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

The invoicing device is further configured to receive third prompt information that the invoicing quantity sent by the authorization device reaches a maximum value, where the third prompt information is sent when the authorization device determines that the invoicing quantity invoiced by the invoicing device reaches the invoicing quantity allowed by the invoicing device; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

In the embodiment of the invention, after the authorization equipment identifies that the authorization equipment is connected with the invoicing equipment, the encrypted target invoice element information stored by the authorization equipment is read, the encrypted target invoice element information is decrypted to obtain the target invoice element information, then the invoice element information contained in the invoice to be invoiced of the invoicing equipment connected with the authorization equipment is obtained, whether the invoice element information is consistent with the target invoice element information or not is judged, if so, the invoicing equipment is informed to invoice, otherwise, the invoicing equipment is not allowed to invoice, and the safety problem that the element content of the electronic invoice can be randomly input and manually modified at present is solved.

In summary, the present invention provides a method, an apparatus and a system for issuing an electronic invoice, wherein the method includes: when the authorization equipment identifies that the authorization equipment is connected with the invoicing equipment, the encrypted target invoice element information stored by the authorization equipment is read, the encrypted target invoice element data is decrypted to obtain the target invoice element information, then invoice element information contained in an invoice to be invoiced of the invoicing equipment connected with the authorization equipment is obtained, whether the invoice element information is consistent with the target invoice element information or not is judged, if so, the invoicing equipment is informed to invoice, otherwise, the invoicing equipment is not allowed to invoice, because the method can only verify the invoice element information as the target invoice element information, namely, the invoice can be invoiced, and therefore, the potential safety hazard caused by artificial modification can be avoided.

For the system/apparatus embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference may be made to some descriptions of the method embodiments for relevant points.

It is to be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely application embodiment, or an embodiment combining application and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method of issuing electronic invoices, for use with an authorisation device, the method comprising:

2. The method according to claim 1, wherein before reading the encrypted target invoice element information stored in the method, the method further comprises:

and if the two are consistent, performing the subsequent steps.

3. The method according to claim 1, wherein before reading the encrypted target invoice element information stored in the method, the method further comprises:

if not, the subsequent steps are carried out.

4. The method of claim 3, wherein the method further comprises:

and updating the number of the invoices which are already issued by the invoicing equipment after the invoicing equipment is determined to issue the invoices.

5. The method of any of claims 1-4, wherein if the invoice element information is inconsistent with the target invoice element information, the method further comprises:

6. The method of claim 1, wherein said decrypting said encrypted target invoice element information comprises:

7. A method of issuing electronic invoices, for use with an invoicing apparatus, the method comprising:

8. The method of claim 7, wherein the method further comprises:

receiving first prompt information of invoice element information error sent by the authorization equipment, wherein the first prompt information is sent when the authorization equipment determines that the invoice element information is inconsistent with the target invoice element information;

the invoicing is not allowed according to the notification sent by the authorization device.

9. The method of claim 7, wherein the method further comprises:

receiving second prompt information of error of the billing device, which is sent by the authorization device, wherein the second prompt information is sent when the authorization device determines that the identification information of the billing device is inconsistent with the identification information of the target billing device;

and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

10. The method of claim 7, wherein the method further comprises:

receiving third prompt information that the number of invoices sent by the authorization equipment reaches the maximum value, wherein the third prompt information is sent when the authorization equipment determines that the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment;

11. An apparatus for issuing electronic invoices, applied to an authorization device, the apparatus comprising:

12. The apparatus of claim 11, wherein the apparatus further comprises:

the billing equipment verification module is used for reading the encrypted identification information of the target billing equipment stored by the billing equipment verification module; decrypting the encrypted identification information of the target billing equipment to obtain the identification information of the target billing equipment; acquiring identification information of billing equipment connected with the billing equipment; judging whether the identification information of the billing equipment is consistent with the identification information of the target billing equipment or not; and if the two are consistent, triggering the reading module.

13. The apparatus of claim 11, wherein the apparatus further comprises:

the billing quantity verification module is used for reading the number of invoices allowed by the encrypted billing equipment stored by the billing equipment; decrypting the encrypted number of invoices allowed by the invoicing equipment to obtain the number of invoices allowed by the invoicing equipment; acquiring the number of invoices issued by invoicing equipment connected with the invoicing equipment; judging whether the number of invoices issued by the invoicing equipment reaches the number of invoices allowed by the invoicing equipment; and if not, triggering the reading module.

14. The apparatus of claim 13, wherein the apparatus further comprises:

and the updating module is used for updating the number of the invoices which are already issued by the invoicing equipment after the invoicing equipment is determined to issue the invoices.

15. The apparatus of any of claims 11-14, wherein the apparatus further comprises:

the prompting module is used for outputting first prompting information with wrong invoice element information and not allowing the invoice to be issued if the invoice element information is inconsistent with the target invoice element information; if the identification information of the billing equipment is inconsistent with the identification information of the target billing equipment, outputting second wrong prompt information of the billing equipment, and not allowing the billing equipment to invoice; and if the number of invoices made by the invoicing equipment reaches the number of invoices allowed to be made by the invoicing equipment, outputting third prompt information that the number of the invoices reaches the maximum value, and not allowing the invoicing equipment to make the invoices.

16. The apparatus according to claim 11, wherein the decryption module is specifically configured to verify the signature of the encrypted target invoice element information by using a stored digital certificate, and decrypt the target invoice element data after verifying the signature by using a stored private key.

17. An apparatus for issuing electronic invoices, which is applied to invoicing equipment, and comprises:

18. The apparatus of claim 17, wherein the receipt billing module is further configured to receive a first prompt message that the invoice element information sent by the authorization device is incorrect, wherein the first prompt message is sent when the authorization device determines that the invoice element information is inconsistent with the target invoice element information; the invoicing is not allowed according to the notification sent by the authorization device.

19. The apparatus of claim 17, wherein the invoicing receiving module is further configured to receive a second prompt message sent by the authorizing device for an error of the invoicing device, wherein the second prompt message is sent when the authorizing device determines that the identification information of the invoicing device is inconsistent with the identification information of the target invoicing device; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

20. The apparatus of claim 17, wherein the invoice receiving module is further configured to receive a third prompt message sent by the authorization device that the number of invoices made by the invoicing device has reached a maximum value, wherein the third prompt message is sent when the authorization device determines that the number of invoices made by the invoicing device has reached the number of invoices allowed by the invoicing device; and not allowing the invoicing equipment to invoice according to the notice sent by the authorization equipment.

21. A system for issuing electronic invoices, characterised in that the system includes means for issuing electronic invoices, as claimed in any one of claims 11 to 16, for use with authorisation devices and means for issuing electronic invoices, as claimed in any one of claims 17 to 20, for use with invoicing devices.