Astudy on development of electronic signature based on rsa public key encryption

• Main Authors: Lê Xuân Trường, Nguyễn Văn Trường
• Format: Article
• Language: English
• Published: HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE 2013-09-01
• Series: Tạp chí Khoa học Đại học Mở Thành phố Hồ Chí Minh - Kỹ thuật và Công nghệ
• Subjects: mã hóa; thuật toán rsa; montgomery; lũy thừa modulo; pkcs#1v1.5; rsa-pss; thu thập chữ ký số trong sharepoint
• Online Access: https://journalofscience.ou.edu.vn/index.php/tech-vi/article/view/1042

Nowadays in electronic transactions, the digital signature is a form to identify users. Construction processes of digital signature are usually based on algorithm DSA, of which the most popular is the RSA public key cryptography. The security of RSA bases on the difficulty when analyzing a large positive integer which generates prime factors and normally associates with the modular power exponentiation with large integer numbers from 1024 to 2048 bits. This paper will introduce methods to calculate large integer, the principle of selecting e, d, n to minimize execution time. Besides, the paper describes the model, the process of operation of 2 digital signature standard PKCS # 1v1.5 and RSA-PSS, as well as the Sharepoint technologies to manage digital signature collection.