Several Symmetric Key based algorithms exist for securing data of big size. In Order to investigate the efficient one , performance analysis is often desirable activity over variety of parameters including number of cores or processors. In present work one symmetric key algorithm has been considered for analysis for n=1( Serially) and (n =2) for Parallel analysis, (where n is number of core). The relative gain of serial implementation and tested for efficiency indicates that encryption of data chunks in parallel is the for blowfish algorithm. The findings in this study provides a useful direction to users and designers of low power handheld devices and IOT to exploit faster encryption and decryption of data with more number of cores.

Symmetric Key Cryptography, Blowfish , parallel implementation

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