Extending AES with DH Key-Exchange to Enhance VoIP Encryption in Mobile Networks

Encryption technology of voice transmission in mobile network based on 3DES-ECC algorithm

“…When the strength coefficient of network attack is 0.2 (at this time, it is under strong attack), the data loss rate of the method in reference [8] is 0.9%, the data loss rate of the method in reference [9] is 1.6%, the data loss rate of the method in reference [10] is 1.8%, and the data loss rate of the proposed method is 0.05%. With the increase of strength coefficient to 1.5, the data loss rate of the method in reference [8] is 9.8%, the data loss rate of the method in reference [9] is 12%, the data loss rate of the method in reference [10] is 9.5%, and the data loss rate of the proposed method is less than 1%, only 0.33%, which shows that the proposed method has better anti-attack ability.This is because the method in this paper will generate random key. After grouping according to 56 bits, a new 3DES key is obtained, which makes the encryption process more complex.…”

“…15 that the data integrity is different after encryption by different methods. When the amount of data is 5GB, the data integrity of the method in reference [8] is 69%, the data integrity the method in reference [9] is 78%, the data integrity the method in reference [10] is 87%, and the data integrity of the proposed method is 96%, so that the data integrity of the proposed method is the largest. With the increase of data encryption, the data integrity of the method in reference [8] is 68%, the data integrity of the method in reference [9] is 72%, the data integrity of the method in reference [10] is 73%, and the data integrity of the proposed method is 93%, which shows that the proposed method has the best data integrity.This is because the method in this paper generates a random key in the encryption process, and groups it according to 56 bits as a 3DES key, and then encrypts the plaintext through the key to generate a ciphertext, so that the integrity of the data is high and the interference is small.…”

“…The complexity and encryption efficiency of the encryption public key compression scheme is low. In reference [10], an extended AES with DH key exchange is proposed to enhance VoIP encryption in mobile networks. With the development of VoIP, the application of VoIP based on SIP protocol is increasing.…”

“…This paper mainly analyzes some security threats faced by SIP protocol network, including typical external attack technology and loopholes in the protocol itself. This paper discusses the encryption, authentication and other security policies proposed in response to sip security threats, analyzes the advantages and disadvantages of these security policies, and puts forward the direction for further improvement of SIP security policies, aiming to continuously improve the security performance based on SIP protocol [10].…”