文章基本信息

标题：A New Robust Cryptography Algorithm based on Symmetric Key to prevent Unauthorized Access to Contents of Encrypted Files
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作者：Mohammad Soltani
期刊名称：International Journal of Computer Science Issues
印刷版ISSN：1694-0784
电子版ISSN：1694-0814
出版年度：2013
卷号：10
期号：2
出版社：IJCSI Press
摘要：Cryptography has specific role to protect secret file from unauthorized access. Cryptography algorithms are classified in to two types, Symmetric-key producing and Public-key producing algorithms. In this paper, suggested a new cryptography algorithm to increase security in the Symmetric-key producing algorithm. The main features of cryptography algorithm defined in this article are Changing the physical structure of the secret file, no limitation for the number of keys, The ability to encrypt the secret file in successive stages, Creating five keys at each stage of cryptography, storing a part of secret file at one of the keys at each stage of cryptography, Interdependence of all keys in all stages of encrypting and decrypting, To make the keys interdependent and to encrypt the secret file by each of them, there are 3 independent algorithms to select the type of algorithm needed to make the keys interdependent by the user, bigger changes in the physical structure of the encrypted file In case of wrong decryption and to make the resulting keys and encrypted file unique after the cryptography process.
关键词：Secret file; Cryptography algorithm; Symmetric key; Combining keys; Keys interdependent; Logical operation; Security