摘要
The Terrestrial Trunked Radio（TETRA） system uses end-to-end encryption in addition to the air interface encryption to provide enhanced security. The TETRA system uses a synchronization technique known as frame stealing to provide synchronization of end-to-end encrypted data. However, the frame stealing process degrades the quality of video. This paper proposes an end-to-end encryption system with the frame stealing technique for voice and frame insertion for video. A block cipher in the output feedback mode is used to implement the end-to-end key stream generator. Moreover. In the Short Data Service（SDS） message encryption , a block cipher in the Cipher Block Chaining （CBC） mode is used to calculate the cryptographically secure checksum, which is sufficient to certify the integrity.
The Terrestrial Trunked Radio（TETRA） system uses end-to-end encryption in addition to the air interface encryption to provide enhanced security. The TETRA system uses a synchronization technique known as frame stealing to provide synchronization of end-to-end encrypted data. However, the frame stealing process degrades the quality of video. This paper proposes an end-to-end encryption system with the frame stealing technique for voice and frame insertion for video. A block cipher in the output feedback mode is used to implement the end-to-end key stream generator. Moreover. In the Short Data Service（SDS） message encryption , a block cipher in the Cipher Block Chaining （CBC） mode is used to calculate the cryptographically secure checksum, which is sufficient to certify the integrity.
基金
ThisprojectissupportedbyNationalNaturalScienceFoundationofChina(60372094).
