3D-Playfair Encrypted Message Verification Technology based on MD5

Abstract

In the world of information development, the transmission of information is much more convenient. However, the transmission process always faces the risk of being attacked, stolen and tampered, which leads to the doubt that the data source is incorrect. For this reason, some scholars proposed to protect important information in the form of passwords. Alok et al. Proposed 3D-Playfair Cipher with Message Integrity using MD5. This paper uses 3D-Playfair encryption for encryption. However, simple 3D-playfair encryption cannot guarantee the integrity of data during transmission, so the author proposes Combined with MD5 to ensure the integrity of the data, but there are doubts about the credibility of the data source, so this paper uses XOR calculation methods to further verify the credibility of the data. When a man-in-the-middle attack is encountered, the attacker intercepts the packet And tampering with the data content can still accurately determine whether the source of the data is the original sender. This method guarantees the integrity of the data while improving the credibility of the data.