scholarly journals High-Throughput of SHA-256 Hash Function with Unfolding Transformation

2019 ◽  
Vol 4 (4) ◽  
pp. 73-81
Author(s):  
Shamsiah binti Suhaili ◽  
Takahiro Watanabe
Keyword(s):  
Digital Signature ◽  
Hash Function ◽  
Transformation Method ◽  
Message Authentication ◽  
Message Authentication Code ◽  
Authentication Code ◽  
Security Applications ◽  
Different Types ◽  
Design Type ◽  
Better Than

Hash Function in cryptography algorithms is used to encrypt the message by giving the appropriate output based on the structure of the hash function itself. This algorithm is important for security applications such as Keyed-Hash Message Authentication Code (HMAC), digital signature, and others. There are different types of hash functions such as MD5, SHA-1, RIPEMD-160, SHA-256, SHA-224, SHA-384, SHA-512, and others. In this paper, the unfolding transformation method was proposed to improve the throughput of the SHA-256 hash function. Three types of SHA-256 hash function were designed namely SHA-256 design, SHA-256 design inner pipelining with unfolding factor 2, and SHA-256 design inner pipelining with unfolding factor 4. The designs were written in Verilog code and the output simulations were verified using ModelSim. The simulation results showed that the proposed SHA-256 inner pipelining unfolding with factor 4 provided the highest throughput which is 4196.30 Mbps, and factor 2 was superior in terms of maximum frequency and was better than the conventional SHA-256 design. Type of Paper: other. Keywords: Cryptography algorithm; FPGA; SHA-256 Hash Function; Unfolding transformation, Verilog

scholarly journals Implementasi Keyed-Hash Message Authentatication Code Pada Sistem Keamanan Rumah

MIND Journal ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 9
Author(s):  
M Ichwan ◽  
Milda Gustian ◽  
Novan Rizky Nurjaman
Keyword(s):  
Hash Function ◽  
Message Authentication ◽  
Brute Force ◽  
Message Authentication Code ◽  
Authentication Code ◽  
Avalanche Effect ◽  
Brute Force Attack

Keyed-Hash Message Authentication Code (HMAC) adalah algoritma untuk menghitung nilai MAC (Message Authentication Code) yang menggunakan Fungsi Hash dikombinasikan dengan sebuah kunci rahasia, Fungsi Hash yang digunakan dalam penelitian ini adalah Secure Ha sh Algorithm 256 (SHA256). Nilai MAC digunakan sebagai otentikasi untuk menjamin integritas data dan keaslian pesan. Algoritma ini di implementasikan pada sistem keamanan rumah, dimana pertukaran pesan antara user dan sistem keamanan di otentikasi dengan menggunakan HMAC. Keamanan  algoritma  HMAC ini  dibuktikan  dengan  hasil  pengujian  Avalanche  effect  yang mencapai 87.5% pada fungsi Hash yang digunakan ,dan dibutuhkan waktu sampai 84 tahun untuk serangan Brute force berhasil pada kunci dengan panjang 8 karakter. Kata kunci: keyed-Hash Message Authentication Code, Hash function, Avalanche  effect, Brute force attack

scholarly journals S-GoSV: Framework for Generating Secure IEC 61850 GOOSE and Sample Value Messages

Energies ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2536 ◽  
Author(s):  
Shaik Mullapathi Farooq ◽  
S.M. Suhail Hussain ◽  
Taha Selim Ustun
Keyword(s):  
Digital Signature ◽  
Automation System ◽  
Message Authentication ◽  
Message Authentication Code ◽  
Authentication Code ◽  
Iec 61850 ◽  
Digital Signature Algorithm ◽  
Iec 62351 ◽  
Secure Hash Algorithm ◽  
Operation Control

Standardized communication plays an important role in substation automation system (SAS). IEC 61850 is a de-facto standard in SAS. It facilitates smooth communication between different devices located in the substation by achieving interoperability. Generic Object-Oriented Substation Event (GOOSE) and Sample Value (SV) messages developed according to IEC 61850 enable efficient monitoring and operation control of SAS. IEC 61850 is very popular due to its flexible and robust modeling. As the number of critical infrastructures that employed IEC 61850 increases, it is important to study cybersecurity aspects as well. To this end, this paper develops a software framework, S-GoSV (Secure GOOSE and SV), that generates custom GOOSE and Sample Value messages. Furthermore, security features are added to protect them from different security attacks within a substation. IEC 62351-6 specifies digital signatures to achieve node authentication and messages integrity. Therefore, S-GoSV implements RSASSA-PKCS1-v1_5 digital signature algorithm based on RFC 2313. Performance studies show that digital signature algorithms based on RSA signing and verification take long times and do not conform to timing requirements stipulated by IEC 61850 for power system communication. To address this, Message Authentication Code (MAC) based digital signature algorithm, Keyed Hash-Message Authentication Code- Secure Hash Algorithm (HMAC-SHA256), is additionally implemented in S-GoSV framework for securing GOOSE messages.

Software Status Identification Based on Message Authentication Technology

2014 ◽  
Vol 519-520 ◽  
pp. 343-349
Author(s):  
Ce Chen ◽  
Xiao Hui Jiang ◽  
Yong Hu ◽  
Jiu Wu Guo
Keyword(s):  
Hash Function ◽  
Function Method ◽  
Message Authentication ◽  
Message Authentication Code ◽  
Authentication Code ◽  
Effective Technique ◽  
Authentication Technology ◽  
Highly Correlated

The software status identification with a message authentication code generated by means of the hash function method that falls within the message authentication technology is discussed in this document. In comparison with the software status management with a software version number that is used widely at present, the message authentication code is highly correlated with the software content to prevent failure of the software status management due to artificial negligence and provide an effective technique for software status management.

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