Secure transmission system and method for online tax filling data of value-added tax

Abstract

The invention discloses a secure transmission system and method for online tax filling data of value-added tax. The system comprises a value-added tax remote tax filling enterprise terminal, a value-added remote tax filling tax administration terminal, an SSL (security socket layer) secure channel and a digital certificate, wherein the value-added tax remote tax filling enterprise terminal comprises a remote tax filling enterprise terminal software and a USB key, and the USB key is used for performing safe handling for the tax filling data transmitted on line; the value-added remote tax filling tax administration terminal comprises a remote tax filling tax administration terminal software and an encryption card, and the encryption card is used for performing safe handling for the tax filling data transmitted on line; the SSL secure channel is connected with the remote tax filling enterprise terminal software and the remote tax filling tax administration terminal software, and is used for authenticating identify of the value-added tax remote tax filling enterprise terminal, building a secure channel and controlling resource access; and the digital certificate is stored in the USB key and the encryption card, and is used for identifying user identity, authenticating identity in application and distributing user public keys. The method comprises a tax filling data uploading method a tax filling result downloading method.

Description

technical field [0001] The invention relates to an online tax declaration transmission system and method, in particular to a value-added tax online tax declaration data secure transmission system and method. Background technique [0002] Nowadays, online value-added tax declaration is a tax declaration software that uses Internet application technology to realize online tax declaration for enterprises, download tax declaration results online, and allow enterprises to complete card clearing and unlocking operations independently. cost. [0003] However, in the process of online VAT declaration, the security of data transmission is particularly important. The current security problems in online tax declaration software include: [0004] 1) Read the tax declaration data from the corporate value-added tax declaration IC card, and directly transmit the tax declaration data over the network. Although the tax declaration data in the IC card is encrypted by the golden tax card hard...

AI Technical Summary

Problems solved by technology

[0004] 1) Read the tax declaration data from the corporate value-added tax declaration IC card, and directly transmit the tax declaration data over the network. Although the tax declaration data in the IC card is encrypted by the golden tax card hardware, the strength of the cryptographic algorithm and the length of the key cannot meet the requirements. Security Requirements for Internet Applications

[0005] 2) In the process of tax declaration data transmission, although some programs use cryptographic algorithms (such as: DES, 3DES and other general cryptographic algorithms) to participate in data encryption protection, their security does not meet the requirements of cryptographic authorities, and there are cryptographic algorithms. Legal issues

[0006] 3), DES, 3DES and other cryptographic algorithms are implemented by software. In the actual use process, when the tax declaration data is encrypted and decrypted, when the data resides in the memory, there is a security risk

[0007] 4) When using digital certificate technology, only the digital signature function is used, and the identity authentication and authorization control based on digital certificates cannot be performed on users

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