A session based symmetric key cryptographic technique has been proposed in this paper and it is termed as 1RS. The plain text is considered as a stream of bits and is chopped into variable length blocks. Bit positions into the block are right shifted to generate the cipher text. Right shift means the bit is right shifted by one position. The data bit is set or reset depending on the previous bit. The MSB is initialized by reset condition. A session key is generated randomly from the chopping information of plain text. Results are generated using twenty files of twelve different types with varying file sizes. Analyzing the results with respect to different parameters, the proposed technique 1RS is compared with existing and industrially accepted symmetric key techniques Triple-DES (168bits) and AES (128 bits).
1RS, AES, Triple DES, Session Key, Chi-square
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