The Encryption Algorithm Based on Principal Component Analysis of Times Series

As to the poor computing power of the wearable devices, the encryption algorithm based on principal component analysis was proposed.First, the algorithm was divided into groups, and each group of data was encoding to extract its main components, then acquired the trend of time series and according to the sequence of the comprehensive index to generate the encryption key. By using the key to carry out the shift operation, a simple cipher text was generated. In the receiver, the same decryption mechanism can be used to get the decryption. The examples showed that the proposed encryption algorithm, compared with the traditional DES algorithm, was simple and easy, It can be convenient and simple application in wearable devices.