With the crucial growth of technology, data security over the network and internet has achieved immense of prominence today and achieving good security is always a talk of a good security method being in place. Therefore, there is need of better security method with better efficiency in order to increase the security and authenticity and to efficiently decrease computational complexity. Although there are many symmetric key algorithms, we proposed a content-based algorithm, which follows the Symmetric key cryptography method. This is an algorithm implementing binary addition operation, a circular bit shifting operation and folding method and as symmetric key cryptography needs the transmission of the secret key along with the ciphered text through the network, a deep concern has given to make the key secure.
Science and Technology are updating rapidly. Data are transferred through various communicative mediums. Hence always there been a major requirement of confidentiality and secure authorization of information to prevent the unauthorised access and attacks. Symmetric key cryptography is an integral part of cryptographic technique which ensures high security and confidentiality of data transmitted through the communication channel using a common key for both encryption and decryption. There are so many traditional symmetric key algorithms as well as some proposed algorithms which can provide high confidentiality along with authorized access of data. In this paper we made a comparison analysis of some of those proposed algorithms as well as the traditional algorithms of symmetric cryptography with the merits and demerits of those different types algorithm.
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