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Banerjee, Ayan
- Block based Data Encryption and Decryption using Number System Logic
Authors
Source
Networking and Communication Engineering, Vol 7, No 5 (2015), Pagination: 175-180Abstract
Cryptography is the automated (or algorithmic) method in which security goals are accomplished. Typically, when we say “crypto algorithm” we are discussing an algorithm meant to be executed on a computer. These algorithms operate on messages in the form of groups of bits.
Here we introduced a Block based symmetric key encryption algorithm, which is based on simple mathematical operation. In this algorithm encryption is done on binary file so it can be applicable for any type of data such a text as well as multimedia data [3]-[9]. For encryption a key is to be generated. Key length and bit stream is chosen at random. At first, the plain text has been converted into its binary form and then the binary file is divided into some blocks. The block length is our key and it’s choosing randomly.
Our algorithm is based on the following method:--
If the sum of each digit of a number is subtracted from that number, then the result is obviously divisible by a particular number [5]-[8]. This is the foundation of our algorithm.
Keywords
Cipher Text, Cryptography, Decryption, Encryption, Plain Text, Symmetric Key.- Block based Data Encryption and Decryption using Algorithmic Operations
Authors
1 Narula Institute of Technology under WBUT, IN
2 CA Department, Narula Institute of Technology (NIT), Agarpara, IN
Source
Networking and Communication Engineering, Vol 7, No 2 (2015), Pagination: 69-73Abstract
In any communication, security is the most important issue in today’s world. Lots of data security and data hiding algorithms have been developed in the last decade, which worked as motivation for the research. The scenario of present day of information security system includes confidentiality, authenticity, integrity, non-repudiation [1]-[7].
This present work focus is enlightening the technique to secure data or message with authenticity and integrity. With the growth of internet and network, the need for secure data transmission become more and more essential and important, as security is a major concern in the internet world [2]-[4]. Data likely to be kept hide from all people except from the authorized user cannot be sent in plain text. So the plain text should be codified by the process of encryption.
Each type of data has its own features; therefore different techniques should be used to protect confidential data from unauthorized access. Here we introduced a new algorithm which is based on simple mathematical operation. In this algorithm encryption is done on binary file so it can be applicable for any type of data such a text as well as multimedia data [3]-[9]. Here the same idea of cryptography is working (i.e. using key, conversion of plain text into cipher text called encryption and the reverse, means cipher text to plain text called decryption).