KR20000066465A - Transmission information enconding method - Google Patents

Abstract

PURPOSE: A method for encoding transmission information is provided to improve the reliability of authentication process as a radio telecommunication company and an authentication institute provide encoded information in case that a subscriber requests a service and execute authentication process for information transmitted from the subscriber sequentially. CONSTITUTION: If a subscriber selects a money charging mode, a radio telecommunication company informs the subscriber to input a password, a count value and desired charging money as voice messages. The company compares whether the password inputted by the subscriber is the same one as a previously registered password. If both passwords are the same, the company compares whether the present input count value is larger than a previous input count value. If the present input count value is larger than the previous input count value, the company transmits the subscriber's account number to a bank and requests the bank to confirm whether enough money for desired charging money has been deposited in the subscriber's account. The bank inquires whether enough money for desired charging money exists in the subscriber's account and transmits a result to the company.

Description

How to encrypt transmission information {TRANSMISSION INFORMATION ENCONDING METHOD}

The present invention relates to an encryption technology, and more particularly, to a transmission information encryption method for service information wirelessly provided to a portable terminal in which an electronic card is integrated in a wireless communication provider.

As the use of the card is becoming more common based on the development of the information industry, a payment service that pays a fee based on the amount charged in the card is also provided.

For example, when using a fare payment means of public transportation, a card that can charge an amount of money has the advantage of saving time and hassle to purchase a ticket.

However, such a card also has a hassle to visit the charging station to charge the card.

Accordingly, a technology has been proposed that can provide a service such as charging the amount of money, suspension of use by wirelessly combining the card and the portable terminal.

Accordingly, the present invention provides a service provided to a portable terminal in which an electronic card is integrally integrated, and provides information encrypted by a specific key value by a provider and a certification authority when a subscriber requests a service, and is transmitted from the subscriber. An object of the present invention is to provide a method for encrypting transmission information, which is designed to improve the reliability of an authentication process by sequentially performing an authentication process on information.

1 is a signal flow diagram illustrating an authentication process of a wireless carrier when charging money in the present invention.

Figure 2 is a signal flow diagram illustrating the authentication process of the certification authority at the time of charging the amount in the present invention.

3 is an exemplary view showing an encryption process when the 3DES algorithm is applied to the present invention.

Figure 4 is a signal flow diagram showing the encryption process at the time of stop or release of use in the present invention.

5 is a signal flow diagram illustrating an encryption process when changing the charging limit in the present invention.

6 is a signal flow diagram illustrating an encryption process when changing the card type in the present invention.

The present invention is to determine whether there is a request to charge the amount of money at the subscriber side in order to achieve the above object, the step of requesting the input of the password, counter value, the charge request amount when the amount of money request from the subscriber side, If the password is matched and the counter value is greater than the previous input counter value, requesting the subscriber to check the account of the subscriber. If the password is transmitted from the certification authority due to the sufficient amount of money in the account of the subscriber, the chip unique number, the charge The amount and counter value are encrypted, and the encryption value is arranged together with the random variable of the wireless carrier and the password random variable of the certification authority, and then transmitted to the subscriber terminal as the primary recharge amount information. And the decimal conversion value is inputted in the wireless communication service provider. Comparing the decimal value of the wireless operator's decimal number using the bonus variable; and if the decimal value of the wireless carrier's decimal number is identical, the certification authority's decimal value, the chip's unique number, and the required charge amount are transmitted to the certification authority for verification. Receiving a step of requesting, and a value obtained by encrypting a charge amount, a chip unique number, a decimal number conversion value, and a certification authority random variable by judging it as a valid signal by the certification authority, the second charge amount is arranged by arranging a bank random variable and a transmission date. Determining whether or not to request recharging at the subscriber side after transmitting the information to the subscriber side; and if the subscriber side has not recharged even after the predetermined time has elapsed, determining that the money charging is successful and ending the charging operation. It provides a charging service.

After successfully transmitting the first charge amount information, if communication with the certification authority is lost, the chip unique number, the charge amount random variable, and the first encryption data are encrypted together, and the encryption value is transmitted along with the charge cancellation pattern information to the subscriber. To cancel the charge of the money.

In addition, the present invention is to determine whether there is a suspend or suspend release request on the subscriber side in order to achieve the above object, and if there is a suspend or suspend release request from the chip unique number, wireless carrier parameters, transmission Encrypting the date or the like with a specific key value and transmitting the encryption value wirelessly along with the suspension or deactivation pattern information, the checksum information, and the transmission date, thereby disabling or disabling the subscriber station. do.

In order to achieve the above object, the present invention encrypts all subscriber's chip unique number, wireless carrier variable, charge limit change information, etc. with a specific key value and changes the encryption limit to the charge limit when the charge limit is legally changed. And wirelessly changing the charging limit amount of the subscriber station by performing the step of transmitting wirelessly together with the pattern information, the checksum information, and the transmission date.

Further, the present invention is to determine the identity change of the subscriber in order to achieve the above object, and if the identity change of the subscriber is determined in the subscriber's chip unique number, wireless carrier variable, the card type to be changed to a specific key value And encrypting the data, changing the card type change pattern information, wireless carrier variable, currently set card type, checksum information, and transmitting date to each subscriber station. It is characterized by changing the type of card when changing.

Hereinafter, the present invention will be described in detail with reference to the drawings.

In the present invention, an operation for charging the amount of money, canceling the charge, discontinuing use, disabling use, changing the charge limit amount, changing the card type, and the like is performed.

1) In order to implement the present invention, a subscriber opens an account at a financial institution (for example, a bank) connected to a wireless carrier and a network, and purchases a terminal combined with a card for recharging the amount of money from a wireless carrier or a distributor. It should be given, which is explained as follows.

First, the wireless carrier system determines whether there is a notification of a new subscriber.

At this time, when a new subscriber is notified, the wireless carrier system transmits the subscriber's account, the serial number and the chip's unique number to the bank when the subscriber terminal's serial number, the chip's unique number, and the subscription account are received from the dealer. A request is made to confirm whether an account is opened and a key value for encryption or decryption of the terminal is calculated using the information received from the agency.

Accordingly, when the bank confirms that the subscriber has applied for the wireless charging service, the bank registers various information of the terminal purchased by the subscriber in the bank system, calculates an encryption key using the various information of the terminal, and uses the password to charge the money. Encrypt using the encryption key value and transmit the encrypted password to the wireless carrier.

Therefore, the wireless communication provider transmits a voice message to the agent by sending a wireless password by attaching a password registration pattern (for example, '1010') to the encrypted password in the bank and entering a number displayed on the terminal.

If a number indicating a transmission error is input from the wireless telecommunications service provider, the wireless telecommunication service provider system, which determines that the password registration has failed due to the transmission error, wirelessly retransmits the encrypted password at the bank.

Thereafter, when the wireless telecommunications service provider decodes the original password from the subscriber station and notifies the wireless telecommunication service provider that it is stored in a specific area, it determines that the password registration is completed and terminates the password registration operation.

2) After receiving a password from a certification authority, such as a bank, the subscriber can perform the charging of the money. In the present invention, two calls must be made to charge the money.

At this time, the terminal should encrypt or decrypt the encrypted information transmitted from the wireless carrier, so the terminal should store the encryption key value given by the wireless operator and the encryption key value given by the certification authority in advance.

Referring to Figures 1 and 2 when the subscriber request amount of money in the present invention will be described.

First, when communication is established and the subscriber side selects the amount charging mode, the wireless communication provider guides the input of a password, a counter value at the terminal, and a charge request amount as a voice message.

Thereafter, the wireless service provider side compares whether the password inputted from the subscriber matches a pre-assigned password, and compares whether the current input counter value is larger than the previous input counter value if the passwords match.

At this time, if the current input counter value is greater than the previous input counter value, the wireless service provider determines that there is no abnormality and transfers the account number of the subscriber to the bank, which is the certification authority, to make sure that the amount of money required for the charging is deposited in the subscriber's account. Ask.

Accordingly, the bank inquires whether the subscriber's account is equal to the amount of the charging request and transmits the result to the wireless carrier. If the subscriber's account has the amount of the charging demand, the bank checks the password random variable together with the judgment result. Send to the wireless carrier.

At this time, the wireless service provider receiving the judgment result and the password random variable from the bank as the charge request amount is arranged by arranging the actual counter value which decodes the encrypted counter value, the charge request amount, and the chip unique number of the subscriber terminal. And then encrypt it using a specific encryption key value.

Accordingly, the wireless service provider transmits the charge request amount, the wireless service provider random variable value, and the password random variable provided by the bank as the primary charge amount information along with the encryption value and inputs a letter or number displayed on the terminal. To guide.

Here, only a part of the actual transmission value for the encryption result value can be transmitted, which is predefined.

The encryption method may use a 3DES algorithm. In this case, since the 3DES input value is limited to 8 bytes, the 3DES is performed twice as shown in FIG.

If the password does not match, or the current input counter value is less than or equal to the previous input counter value, or if the amount of money to be charged in the subscriber's account is not deposited, the wireless carrier service charges. It is determined that the error of the transmission of the voice message for the error to the subscriber side invalidates the current charging operation.

On the other hand, when the wireless carriers transmit the first charge amount information in the same process as described above, the subscriber station performs the following operation.

First, the subscriber station determines the checksum error. If the subscriber inputs a number corresponding to the error due to the checksum error, the wireless carrier determines that a transmission error has occurred and retransmits the first charge amount information.

If there is no checksum error, the subscriber station determines whether the sum of the charge request amount and the balance exceeds the charge limit amount for the charge amount.

In this case, if the charge limit is exceeded, the terminal displays the corresponding number.If the subscriber presses the number displayed above, the wireless service provider notifies the subscriber that an error exceeding the charge limit has occurred and presses the balance button to check the remaining balance again. After that, a voice message is sent to re-enter the recharge amount.

Accordingly, when the subscriber re-enters the charge request amount, the wireless carrier performs encryption again to retransmit the first charge amount information.

When the sum of the charge request amount and the balance does not exceed the charge limit, the subscriber station performs encryption in the same manner as the encryption process of the primary charge amount information.

At this time, the subscriber station performs authentication on the encryption value and displays a number corresponding to the authentication error when an authentication error occurs.

Therefore, when the subscriber inputs a number corresponding to the authentication error, the wireless communication provider transmits a voice message to inform the subscriber that an authentication error has occurred and retransmits the first charge amount information.

In addition, the subscriber station displays a number corresponding to an error during the charging process.

Accordingly, when the subscriber inputs a number corresponding to the processing error, the wireless communication provider notifies the subscriber that a processing error has occurred and then retransmits the first charge amount information.

If the occurrence of an input error, a calculation error, etc. is repeated a predetermined number of times, the wireless telecommunication service provider visits the A / S center and notifies the user of an automatic response message to receive confirmation and repair and terminates the charging of money.

In addition, when the subscriber terminal successfully encrypts the primary charging operation, the subscriber terminal displays a decimal value converted during encryption, and the subscriber inputs a number corresponding to the displayed decimal conversion value.

At this time, the wireless service provider side arranges the charge request amount, the wireless carrier random variable, the chip unique number, and the decimal number inputted by the subscriber in the same way as the terminal side and use it on the terminal side. Encrypt using specific key value.

Accordingly, the wireless service provider converts the result value of the encryption into a decimal number and compares it with the decimal conversion value inputted by the subscriber.

If the comparison result is not the same, the voice message is transmitted to the subscriber to input the number again because the number cannot be authenticated.

In this case, if the number entered again is the same value as the previously entered number, it is judged as a number that cannot be authenticated without performing encryption, and guides the user to re-enter the number displayed on the terminal to a voice message. If a predetermined number of consecutive inputs are made, the voice message requesting for A / S is transmitted, and then the money charging operation is terminated.

If the decimal conversion value for the encryption result value and the decimal conversion value inputted by the subscriber are the same, the wireless service provider converts the decimal conversion value, the chip unique number, the charge request amount, and the subscriber's account among the values encrypted by the specific key value of the bank in the subscriber terminal. Send a number, etc., to the bank and ask for verification of decimal conversion.

In this case, the bank system arranges the charge request amount, the chip unique number, the random password transmitted to the wireless carrier when charging the first amount, and the password provided to the subscriber in the same manner as the encryption at the subscriber side with the specific key value of the bank. Encrypt with a specific key value of and convert the result to decimal number and compare with decimal value transmitted from wireless service provider.

If the comparison results of the converted values do not match, the wireless communication provider is notified of the result.

Accordingly, the wireless service provider notified by the bank that the decimal conversion values do not match cannot be authenticated to the subscriber and guides the user to re-enter the number displayed on the terminal.

If the subscriber presses the same number again as before, the subscriber is notified that the user cannot be authenticated. If this operation is repeated a predetermined number of times, the money recharging operation is terminated.

When the decimal conversion value for the bank is input to a different value from the previous one, the wireless communication service provider requests verification while transmitting it back to the bank.

After that, when the comparison result of decimal conversion value is matched, the bank sends the encrypted result value (all or part) and the bank random variable to the wireless service provider, and at the same time, the amount of charge required by the subscriber in the subscriber's account. After transfer to the operator's account and transmits the result to the wireless carrier.

Therefore, the wireless telecommunication service provider notified of the transfer result from the bank rearranges the encryption result value, the bank random variable, the second amount charge signal pattern, the checksum information, and the transmission date received from the bank to make the second charge amount signal wirelessly. The subscriber will be notified by voice message that he sent a second charge signal.

After that, the wireless service provider waits for a signal input from the subscriber to determine whether or not the transmission signal is an error.

At this time, the terminal performs encryption with a specific key value of the bank in the same process as the encryption process in the bank, and determines whether the encryption result value is identical to the value transmitted to the wireless carrier when charging the first amount.

If a checksum error or an authentication error occurs by performing the authentication process in the terminal, the corresponding number is displayed and if the subscriber inputs the corresponding number to select the recharging mode by phone or PC, the second amount is charged. The charging signal will be resent.

Thereafter, when the terminal successfully encrypts the secondary charged amount signal because there is no checksum error or authentication error, the terminal displays the words 'charge amount', 'transmission date', and 'complete'.

In the above, the subscriber station increments the counter value each time the user charges or uses the charged money.

In addition, if the first request for successful charging of the amount to the bank for the second payment process, when the communication with the bank is disconnected or there is not enough money in the bank account, the wireless carrier will proceed to cancel the charge. This is because the terminal is set to the temporary pause state when the first amount charge is successful.

At this time, the wireless service provider encrypts the charge amount, the encryption result value included in the primary amount charge information, the chip unique number, and the random variable value of the wireless carrier using a specific key value, and wireless communication of all or part of the encryption result value. Rearrange the operator random variable, the chargeback cancellation information pattern, the checksum, and send it to the subscriber station.

Accordingly, the terminal checks the checksum bit and if there is no transmission error, reads and arranges the charge amount, the wireless carrier random variable, the primary charge information and the chip unique number, and then encrypts the specific key value of the wireless carrier as the encryption key value. Perform.

At this time, the subscriber station compares whether the encrypted result value and the encrypted data included in the received amount charge cancellation information match.

If the comparison value does not match, an authentication error message is displayed and the subscriber inputs a number corresponding to the error message displayed on the terminal.

In addition, if the comparison value is matched, the subscriber station terminates the charging of the money, so that the decimal conversion value is cleared and then the temporary stop flag is disabled to switch to the usable state of the terminal.

Accordingly, the terminal is in a chargeable state.

3) In general, the card can be used by others when the balance is lost when the card is lost. However, in the present invention, when the terminal is lost, the user can set the stop and release the suspension when the lost device is found. Referring to the following.

First, when a suspension request is received, the wireless carrier encrypts the subscriber's chip unique number and wireless carrier variable with a specific key value of the wireless carrier, and converts all or part of the encryption result to the wireless carrier variable and the transmission date. It is rearranged along with the suspended pattern information and the checksum information and transmitted to the subscriber station.

In this case, the wireless carrier variable transmits a larger value than the wireless carrier variable transmitted at the time of previous suspension by the subscriber.

Accordingly, the terminal searches for checksum information and compares random variables of wireless carriers when there is no error. The terminal compares whether the variable transmitted this time is larger than the previously transmitted variable.

If the wireless carrier random variable transmitted this time is less than or equal to the previously transmitted variable, the terminal does not set the suspension.

On the contrary, if the wireless carrier variable transmitted this time is larger than the previously transmitted variable, the rest except for the encryption value is encrypted with a specific key value and compared with the encryption value extracted from the transmission information.

Accordingly, if the encryption values do not match, the suspension is not set. On the contrary, if the encryption values match, the suspension is set.

In addition, when the terminal is found, the wireless communication service provider transmits suspension of release information in the same process as the suspension of use, and the terminal determines whether to cancel suspension of use with the same authentication process as the suspension of use.

If a lost terminal is not found, use of the terminal is terminated and a new terminal can be purchased.

4) Generally, the usage limit of a card is legally restricted.

However, the usage limit may change depending on the times.

Therefore, in the present invention, when the usage limit is changed, the wireless service provider changes the charging limit of the electronic card embedded in all subscriber terminals. This process will be described with reference to FIG.

First, when the charge limit is changed, the wireless service provider encrypts the chip unique number, wireless carrier variable, and changed charge limit for each subscriber with a specific key value of the wireless service provider and fills all or part of the encrypted result value with the charge limit pattern. It is rearranged together with the information, the checksum information, and the transmission date, and transmitted to each subscriber station.

In this case, the wireless carrier variable transmits a larger value than when the charging limit change information was previously transmitted.

Accordingly, each subscriber station searches for a checksum error and performs a comparison operation of the wireless carrier variable when there is no error.

If the currently transmitted wireless carrier variable is less than or equal to the previously transmitted wireless carrier variable, the subscriber station does not change the charge limit.

On the contrary, if the currently transmitted wireless carrier variable is larger than the previously transmitted wireless carrier variable, the subscriber station encrypts the remaining value except for the encrypted value with the specific key value and compares it with the encrypted value extracted from the transmitted information. Done.

Accordingly, if the encryption values do not match, the charging limit of the card is not changed. On the contrary, if the encryption values match, the charging limit of the card is changed using the change information included in the transmission information.

5) Generally, cards, especially transportation cards, are classified according to their identity.

For example, different colors of cards distinguish between the general public and students.

However, in general, students change their status when a certain period of time, and if the status changes, the subscriber may need to purchase a new card, causing inconvenience and economic loss.

Therefore, in the present invention, the type of card is set according to the identity of the subscriber at the time of purchase of the terminal, and the type of card is changed when the identity of the subscriber is changed. This process will be described with reference to FIG.

First, the wireless service provider searches for whether the identity of the subscriber changes from the time when the subscriber purchases the terminal.

At this time, upon recognizing the subscriber whose identity is changed, the wireless service provider encrypts the subscriber's chip unique number, wireless carrier variable, the currently set card type, and the type of card to be changed with the specific key value of the wireless service provider. All or part of the result value is arranged with the card type change pattern information, the checksum information, and the transmission date and transmitted to the subscriber station.

In this case, the wireless carrier variable transmits a larger value than when the card type change information was previously transmitted.

Accordingly, each subscriber station searches for a checksum error and performs a comparison operation of the wireless carrier variable when there is no error.

If the currently transmitted wireless carrier variable is less than or equal to the previously transmitted wireless carrier variable, the subscriber station does not change the charge limit of the card type.

On the contrary, if the currently transmitted wireless carrier variable is larger than the previously transmitted wireless carrier variable, the subscriber station compares whether the currently set card type matches the current card type included in the transmission information.

If the type of the card does not match, the card type is not changed. On the contrary, if the type of the card is matched, the remaining information except for the encryption value is encrypted with a specific key value to match the encryption value included in the transmission information. Will be compared.

Accordingly, if the encryption values do not match, the card type change is invalidated. On the contrary, if the encryption values match, the card type is changed using the change information included in the transmission information.

As described in detail above, the present invention has an effect of improving the reliability of the authentication process by encrypting and authenticating information to be transmitted wirelessly when a service request of a subscriber is provided using a specific variable provided by an operator and a certification authority.

Claims (5)

A method of providing a service to a portable terminal, comprising: a first step of requesting input of a counter value at the terminal side upon request of a charge for money from a subscriber; and if the current input counter value is greater than a previous input counter value, In the second step of requesting the subscriber's account inquiry and receiving the result that the certification authority determines that the subscriber's account has sufficient deposit amount, the chip unique number, the charge amount, and the counter value are encrypted and the encryption value is randomized by the wireless carrier. Variable, the third step of requesting the input of the decimal conversion value to the subscriber side after being transmitted to the subscriber terminal as the first charge amount information arranged with the password random variable in the certification authority; A fourth step of comparing whether the decimal conversion values match using a random operator of the service provider; In the fifth step of transmitting the decimal number conversion value of the wireless communication provider in accordance with the certification authority decimal conversion value, the chip unique number, the charge request amount to the certification authority to request verification, and the charge amount determined by a valid signal from the certification authority Receives the encrypted code, the decimal number conversion value, the certification authority random variable together with the encryption value, the certification authority random variable, and the transmission date. And a sixth step of determining whether there is a request, and a seventh step of determining that the money charging is successful if there is no recharge request. The method of claim 1, wherein if communication with the certification authority is lost after successfully transmitting the first charge amount information, the chip unique number, the charge amount random variable, and the first encryption data are encrypted together, and the encryption value is converted into the charge cancellation pattern information. And canceling the charge of the amount of money by transmitting to the subscriber side together. A method of providing a service to a portable terminal, comprising: a first step of determining whether there is a suspend or suspend release request on a subscriber side; and if the suspend or suspend suspend request is received, a chip unique number, a wireless carrier variable, Encrypting the transmission date with a specific key value and performing the second step of wirelessly transmitting the encryption value along with the suspension pattern information, the checksum information, and the transmission date, thereby stopping or disabling the subscriber station. Method of encrypting transmission information. In the method of providing a service to a mobile terminal, a first step of judging whether the charge limit is legally changed, and if the charge limit is changed, a chip unique number, a wireless carrier variable, a transmission date, etc. for each subscriber And encrypting a specific key value and wirelessly transmitting the encryption value along with the charging limit change pattern information, the checksum information, and the transmission date to change the charging limit amounts of all subscriber stations. A method of providing a service to a mobile terminal, comprising: a first step of determining a change of identity of a subscriber; and if the change of identity of the subscriber is determined, the chip unique number of the subscriber, a wireless carrier variable, a previous card type, and a change A second step of encrypting the card type and the transmission date with a specific key value, and converting the encrypted value and the wireless carrier variable, the previous card type, the card type to be changed, the transmission date, the card type change information pattern, and the checksum information into a wireless signal. And converting the type of the card when the identity of the subscriber is changed by performing a third step of converting and transmitting the same to each subscriber station.