Abstract: The increasing ubiquity of information technologies in all aspects of human life makes security issues one of the most critical aspects of system design. In this paper we introduce a new symmetric cryptosystem based on IDEA system. The plaintext block is divided into basic sub-blocks each of thirty-two bits in length. The new Proposal can encrypt blocks of plaintext of length 512 bits into blocks of the same length. The key length is 1024 bits. The total number of rounds is 16. It uses modulo addition and thirty-two bits XORING are used followed by modulo multiplication. It uses new efficient MDS (Maximum Distance Separable) matrix which provides optimal diffusion mapping. In this system, we try to have maximum branch number for our new MDS matrix, we also try to get the minimum correlation between plaintext and ciphertext, highly avalanche effect and defeat the frequency analysis and most well-known attacks. The new algorithm is compared with IDEA and gives excellent results from the

• Publication Date: 07-Apr-2013
• DOI: 10.15224/978-981-07-5939-1-18
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Abstract: Age of Hydro Electric Plants in India is considered to be about 25 to 30 years. After this age, it is necessary that hydro electric plant should be refurbished, so that we can increase its Generation and efficiency. With the age some parts of the Electric plants are not giving full efficiency due to bear and tear. Generation capacity of the Hydro Electric Plant can be increased by replacement of some of crucial parts and by reducing losses. It is also important to note here that the increasing demand of electric power can be achieved by establishing new Electric Power Plants or by upgrading the old electric Power Plants. Some of the electric plants in India and Hydro Electric Power Plants in Himachal Pradesh particularly are crossing their maximum age limit and it is very important that such Electric Generation Plants should be upgraded. Modernization of electric plants is also a very important aspect to increase the generation capacity of the old power plants. With the passage of time

• Publication Date: 07-Apr-2013
• DOI: 10.15224/978-981-07-5939-1-19
• Views: 0
• Downloads: 0