期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2015
卷号：3
期号：11
DOI：10.15680/IJIRCCE.2015.0311114
出版社：S&S Publications
摘要：In this digital world, which is currently involving a rapid change in technology, the security of digitalinformation has become a primary concept. Cryptography plays a specific and important role to protect secret files anddocuments from unauthorized access. The cryptography algorithms are classified in to two categories, Public-keyproducing and symmetric-key producing algorithms. The principal goal of designing any encryption algorithm is tohide the original message and send the encrypted or secret text message to the receiver so that secret messagecommunication can take place over the web. The strength and potentiality of an encryption algorithm depends on thedifficulty of cracking the original message. A number of symmetric key encryption algorithms like DES, TRIPLE DES,AES, BLOWFISH have been developed to provide greater security affects one over the other. Although the existingalgorithms have their own merits and demerits but in this we presents a new approach for data encryption anddecryption based on multiple random keys generation. A new encryption algorithm based on block cipher generatingmechanism is proposed herewith to analyze the time-consumed by the complete process (process starting from senderencryption to receiver decryption) of the selected cryptographic algorithms with proposed algorithm. Creating randomkeys for each block and interdependence of all keys in all stages of encrypting and decrypting provides high secure forthe data. For the plaintext the corresponding key are generated by randomly. The expected results showing that, underthe random keys generation and for the same size of the input block of data, the proposed algorithm will be aboutseveral times faster than existing algorithm, and there are other runtime characteristics which further highlight thedifference between these cryptographic algorithms. This algorithm is safe against unauthorized attacks and runs fasterthan the popular existing algorithms. With this new approach we are implementing a technique to enhance the securitylevel of this algorithm and to further reduce the time for encryption and decryption.
关键词：Cryptography; symmetric key; asymmetric key; random key; security; and security attacks
