Encryption method for maintenance of power distribution terminals

• Main Authors: MA JINLIANG, ZHENG YUSHI, LIU MINGLIN, XU JUN, LI FUSHENG, LI ZAOPEI
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2013
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses an encryption method for maintenance of power distribution terminals. The method includes (1) a key generator randomly generating a 64-bit encryption key and corresponding key ID through an encryption equation; (2) firstly using the data encryption standard (DES) algorithm to perform three encryptions on plaintext data needed to be transmitted, and then using the RSA algorithm to perform encryption on the DES key; (3) adopting a cocurrent encryption tunnel technology to establish independent encryption tunnels between a server and each power distribution terminal, and transmitting data through the established encryption tunnels; and (4) firstly decrypting the encryption data through the decryption equation to obtain the key ID, then decrypting the decrypted key ID through the key analytical algorithm to obtain the encryption key, and finally performing decryption through the encryption key to obtain the plaintext. According to the method, the safety and reliability during the maintenan