Data Transmission Scheme Based on AES and Polar Codes

The encryption is independent from encoding, limiting the efficiency of information transmission and the miniaturization of baseband chips. It is necessary to find out the conjunction points between encryption and encoding. This paper designed a design a data transmission scheme-AESP algorithm by combining the AES(Advanced Encryption Standards) with polar codes, which has both encryption and error correction capabilities. This scheme integrated the encoding into the encryption process and proposed a new algorithm of key expansion. And the initial and final rounds are also changed to improve security. A 128-bit plaintext and an image are encrypted and decrypted, which achieves a good effect. AESP is 4% faster than the traditional scheme in serial state. Finally, AESP is performed in parallel on Hadoop platform. Results showed that AESP can reduce operation time by about 71% compared with serial computing.