Classical computers are quite safe from attacks by implementing traditional cryptographic techniques and algorithms but in future as quantum computers will come in full fledge, our current cryptographic algorithms will become vulnerable. In this paper authors have presented a modified blowfish scheme named as pseudo random generated blowfish encryption algorithm which can provide security to our data quantum computers also. Analysis of algorithm is done on classical computer as well as on quantum simulators (IBM qx) and result of comparison is also presented. The theoretical security measures are also discussed in this paper.

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