TrustZone-based Mobile Terminal Security System

Intelligent terminals play a very important role in different scenes of life and work. More and more users are personally stored in their privacy, and the problem of ensuring data security becomes more prominent. The fingerprint information is widely used in smart terminal devices because of its uniqueness and immutability. In order to enhance the security of smart terminal fingerprint recognition, this paper combines ARM TrustZone security extension technology and based on the fingerprint recognition idea of biological characteristics, proposes a fingerprint identification security framework based on TrustZone, which provides a trusted execution environment for fingerprint identification applications. Preventing attacks from potentially malicious programs ensures that the fingerprint identification process is secure and reliable. In order to ensure the security of fingerprint information, a key protected by the Trust Zone for fingerprint data and feature security encryption is provided to ensure that it is not stolen. At the same time, in order to reduce the misrecognition rate of fingerprint recognition, a small area fingerprint splicing algorithm is proposed in the registration stage to improve the recognition function of the system.