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GOST is a well-known 256-bit block cipher which is a plausible alternative for AES-256 and triple DES. In 2010 GOST was submitted to ISO 18033, to become a worldwide industrial encryption standard. Until 2011 researchers unanimously agreed that GOST could or should be very secure, which was summarized in 2010 in these words: ―despite considerable cryptanalytic efforts spent in the past 20 years, GOST is still not broken". Unhappily, it was recently discovered that GOST can be broken and is a deeply flawed cipher. Looking at the current situation, our ambition is to tighten up the security factor that minimizes the effect of Cryptanalysis being done on GOST algorithm. Our new paradigm is having substantial amount of effort and an improvable aspect on security over the network. GOST is a block cipher algorithm proposed for the security of data or information when transmitted over the network. This algorithm practices some techniques for secure communication in the presence of adversaries. It is related to various aspects in information security such as data confidentiality, data integrity and authentication. Making GOST algorithm much simpler and little more secure by removing the key repetition, the algorithm shows good resistance against the brute force attack.
