Voucher verification auxiliary device, voucher verification auxiliary system, and voucher verification auxiliary method

A voucher verification auxiliary system, comprising:

• a user device configured for storing voucher data to be verified;
• a voucher verification auxiliary device, comprising:
• an encryption key generating unit configured for, when the user device is approaching thereto, generating an encryption key and transmitting the encryption key to the user device, allowing the user device to encrypt the voucher data with the encryption key and generate first encrypted data;
• a first decrypting unit configured for receiving the first encrypted data from the user device and decrypting the first encrypted data with the encryption key generated by the encryption key generating unit to obtain the voucher data;
• a second encrypting unit configured for encrypting the voucher data decrypted by the first decrypting unit to generate second encrypted data for verification of the voucher data;
• and
• a second decrypting unit configured for receiving and decrypting third encrypted data to obtain a verification result generated as a result of the verification of the voucher data;
• a verification center configured for receiving and decrypting the second encrypted data from the voucher verification auxiliary device to obtain the voucher data, encrypting the verification result to generate the third encrypted data after the voucher data is verified to be correct and the verification result is generated, and transmitting the third encrypted data back to the second decrypting unit for decryption;
• and
• a voucher receiving terminal configured for receiving the verification result from the second decrypting unit.

A voucher verification auxiliary method, comprising:

• when a user device stored with voucher data is approaching a voucher verification auxiliary device, enabling the voucher verification auxiliary device to generate and transmit an encryption key to the user device for the user device to encrypt the voucher data with the encryption key to generate first encrypted data;
• enabling the voucher verification auxiliary device to read the first encrypted data and decrypt the first encrypted data with the encryption key to obtain the voucher data;
• enabling the voucher verification auxiliary device to encrypt the voucher data to generate and transmit second encrypted data to a verification center for verification of the voucher data;
• enabling the verification center to decrypt the second encrypted data from the voucher verification auxiliary device to obtain the voucher data, to generate a verification result after the voucher data is verified as a legal voucher, to encrypt the verification result to generate third encrypted data, and to transmit the third encrypted data back to the voucher verification auxiliary device;
• enabling the voucher verification auxiliary device to decrypt the third encrypted data from the verification center to obtain the verification result corresponding to the voucher data;
• and
• enabling the voucher verification auxiliary device to transmit the verification result to a voucher receiving terminal.