Advanced Architecture For Using MD5 Algorithm of Text File Digital Signature

Abstract

This paper aims to study the conceptual of authentication and several methods that begin used to ensure it. More specific, research focuses on one of most important methods which is called digital signature. Digital signature mainly consist of two parts, first one is digital signature generation and verification of digital signature. Digital signature can ensure a high level of authentication and security for data communication. In addition, it is one of the recently used methods for data privacy. Digital signature is normally utilized to seek unauthorized modification that may occur in data, and prove the identity of the sender. Receiver can use the digital signature to ascertain the identity of the sender, so that the sender cannot deny his signature. This is ordinarily called non-repudiation.In this paper, an effective method for digital signature generation has been proposed. This method was utilized to generate digital signature for text file based on modification of MD5 features. RSA, the most widely-used public key cryptography algorithm, was used afterward.Proposed method presents high level of security and authentication for letters were signed and transferred via computer network.