<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>With the continuous development of the Internet and communication technologies, network communication provides convenience but also brings security problems such as exposure of users' personal privacy information and theft, private tampering, and forgery of false information. Modern cryptography technology is an important safeguard against message eavesdropping and tampering, while the rapidly developing anonymous communication technology in this century makes it difficult for attackers to infer user's personal information and communication relationships. In response to the potential threats of traditional centralized systems such as central nodes being vulnerable to attacks and data storage being tampered with, this paper proposes a blockchain anonymous communication algorithm KDAC based on key derivation, which takes advantage of the decentralization, data immutability, consensus mechanism and anonymity of blockchain and combines the ECC cryptographic derivation algorithm and anonymous communication technology to realize the key-at-a-time, one-address-at-a-time The key derivation scheme ensures the message integrity and tamper-evident while effectively hiding the identity information of both communication parties. In addition, this paper also optimizes the blockchain anonymous communication system with key derivation. Users only need the initial key of blockchain nodes to join the network for communication, and the information transmission is difficult to trace based on the blockchain network, which can effectively guarantee communication security and anonymity. The experimental results show that the efficiency of the derived key algorithm is roughly in the same order of magnitude as that of the 256-bit AES symmetric encryption algorithm, which can play a better role in practical applications. On the other hand, the derived key generated based on the algorithm has complete randomness in association verification, and it is impossible to reverse the initial parameters, which can well guarantee the anonymity of user identity.</p>
</abstract>

With the continuous development of the Internet and communication technologies, network communication provides convenience but also brings security problems such as exposure of users' personal privacy information and theft, private tampering, and forgery of false information. Modern cryptography technology is an important safeguard against message eavesdropping and tampering, while the rapidly developing anonymous communication technology in this century makes it difficult for attackers to infer user's personal information and communication relationships. In response to the potential threats of traditional centralized systems such as central nodes being vulnerable to attacks and data storage being tampered with, this paper proposes a blockchain anonymous communication algorithm KDAC based on key derivation, which takes advantage of the decentralization, data immutability, consensus mechanism and anonymity of blockchain and combines the ECC cryptographic derivation algorithm and anonymous communication technology to realize the key-at-a-time, one-address-at-a-time The key derivation scheme ensures the message integrity and tamper-evident while effectively hiding the identity information of both communication parties. In addition, this paper also optimizes the blockchain anonymous communication system with key derivation. Users only need the initial key of blockchain nodes to join the network for communication, and the information transmission is difficult to trace based on the blockchain network, which can effectively guarantee communication security and anonymity. The experimental results show that the efficiency of the derived key algorithm is roughly in the same order of magnitude as that of the 256-bit AES symmetric encryption algorithm, which can play a better role in practical applications. On the other hand, the derived key generated based on the algorithm has complete randomness in association verification, and it is impossible to reverse the initial parameters, which can well guarantee the anonymity of user identity.

Research on Blockchain Anonymous Communication Based on Key Derivation

School of Computer Science and Engineering

International Journal of Advanced Network, Monitoring and Controls

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Research on Blockchain Anonymous Communication Based on Key Derivation"}

With the continuous development of the Internet and communication technologies, network communication provides convenience but also brings security problems...

Key Type	Generation process	Transparency
Initial private key	k	Only visible to yourself
Initial public key	K=kG	Visible to all
Derived Private Keys	K_t=k*HASH(x\|\|t)mod n	Only visible to yourself
Derived Public Key	K_t=K*HASH(x\|\|t)=k_tG	Both sides of the communication are visible
Session Key	K_st=K_AK_Bt=k_BK_At	Both sides of the communication are visible

Research on Blockchain Anonymous Communication Based on Key Derivation

Publicado en línea: 16 ago 2023

Páginas: 1 - 11

DOI: https://doi.org/10.2478/ijanmc-2023-0051

Palabras clave
Blockchain, Key Derivation, Anonymous Communication, One Secret At a Time

© 2023 Yanxun Chen et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

ECC key generation process and transparency characteristics table

Research on Blockchain Anonymous Communication Based on Key Derivation

Publicado en línea: 16 ago 2023

Páginas: 1 - 11

DOI: https://doi.org/10.2478/ijanmc-2023-0051

Palabras claveBlockchain, Key Derivation, Anonymous Communication, One Secret At a Time

© 2023 Yanxun Chen et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

ECC key generation process and transparency characteristics table

Palabras clave
Blockchain, Key Derivation, Anonymous Communication, One Secret At a Time