An identity control method based on credibility platform module and fingerprint identifying

Abstract

The invention provides an identity control method based on TPM and fingerprint identification that includes steps: A1, presetting the fingerprint characteristic information module, the module is protected by the TPM; A2, the fingerprint collecting module collects the image information of present user's fingerprint, and the information is transmitted to the fingerprint extracting module; A3, the fingerprint extracting module extracts and calculates the characteristic of fingerprint, and the results is sent to the TMP chip; A4, The fingerprint comparison module of the TMP chip compares with the fingerprint characteristic data extracted this time according to the fingerprint characteristic module to identify the user's identity; A5, the TPM chip judges that the user has the authority to operate the computer according to the comparing result and to execute the step A6, otherwise execute the step A7; A6, the TPM chip works normally and executes the operation of user's requirement; A7, the TPM chip is in inactive state and rejects the operation of user's requirement, and return the error information for upper layer.

Description

Technical field [0001] The invention relates to the field of computer information security, in particular to a method for using fingerprint biometric technology and trusted platform module chip technology for computer user identity authentication and authority control. Background technique [0002] With the advent of the Internet age, information security has become a general concern for computer users, and people’s requirements for computer security are getting higher and higher, and fingerprint recognition technology is increasingly used in computer user identification and operation access authorization confirmation. widely. [0003] Before the appearance of the Trusted Platform Module (TPM) chip, fingerprint recognition technology mainly adopted two implementation modes in the application of computer user identification: [0004] Mode 1: Realize fingerprint recognition and comparison algorithms completely through computer software. This mode cannot achieve user fingerprint rec...

AI Technical Summary

Problems solved by technology

For the popularization of TPM chips, low-cost and high-security designs are generally adopted in the world; because TPM does not need to perform a large number of data calculation functions, TPM chips currently produced at home and abroad are widely used as 8-bit or 16-bit CPUs. Central processing unit, and this kind of CPU is definitely not capable of performing large-scale and complex computing tasks like image pattern recognition algorithms

[0009] Mode 3: Only the fingerprint feature comparison algorithm with a small amount of calculation in the fingerprint recognition algorithm is embedded into the TPM chip. Although this mode solves the defect of TPM's computing power, there is a fatal weakness, that is, the TPM does not analyze the user's fingerprint feature information. After comparing with the fingerprint template, the result of matching or not can only be passed to the upper layer for further processing. In this way, if the upper layer system is attacked, the processing link of the TPM return result will be bypassed, which will make the entire TPM fingerprint identification system useless

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