Research On The Security Design Of Encrypted Mobile Phone System In GSM

With the rapid development of mobile communication technology, the mobile phone not only plays an important role in personal communication,but also is widely used in official and business activities. Therefore, secure communication occupies a very important position in all aspects of social life and national security. However, there are still some hidden safety problems in the present mobile communication systems, which are unable to meet the requirements of secure communication.In this thesis, GSM mobile phone encryption security system design is mainly researched. Based on the GSM digital mobile communication systems, analyzing the current GSM system security risks, the tasks and requirements of the encryption security system design is proposed, the principles of GSM mobile phone encryption security system design is given, and some technology related to the security design such as cryptographic algorithm, key management, digital certificates, smart cards and Short Message Service technology are studied. Studying the security design of encrypted mobile phone and management center, the design of encrypted mobile phone and management center, parts of the hardware platform of safety design of encrypted mobile phones, secure protocol and work processes are given, also monitoring and management, exchange certificates, and cryptography synchronization technology is researched and designed.